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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2

Bladeren bron 
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (31 commits)
  ocfs2: clean up bh null checks
  ocfs2: document access rules for blocked_lock_list
  configfs: file.c fix possible recursive locking
  configfs: dir.c fix possible recursive locking
  configfs: Remove EXPERIMENTAL
  ocfs2: bump version number
  ocfs2/dlm: Clear joining_node on hearbeat node down
  ocfs2: convert byte order of constant instead of variable
  ocfs2: Update default cluster timeouts
  ocfs2: printf fixes
  ocfs2: Use generic_file_llseek
  ocfs2: Safer read_inline_data()
  ocfs2: Silence false lockdep warnings
  [PATCH 2/2] ocfs2: cluster aware flock()
  [PATCH 1/2] ocfs2: add flock lock type
  ocfs2: Local alloc window size changeable via mount option
  ocfs2: Support commit= mount option
  ocfs2: Add missing permission checks
  [PATCH 2/2] ocfs2: Implement group add for online resize
  [PATCH 1/2] ocfs2: Add group extend for online resize
  ...
This commit is contained in:
Linus Torvalds
2008-01-25 17:11:13 -08:00
bovenliggende 2ba14a017a 2fe5c1d7eb
commit 29bd17af7d
53 gewijzigde bestanden met toevoegingen van 2019 en 1606 verwijderingen
Download Patch-bestand Download Diff-bestand Expand all files Collapse all files

14
fs/Kconfig
Bestand weergeven

@@ -440,14 +440,8 @@ config OCFS2_FS
Tools web page: http://oss.oracle.com/projects/ocfs2-tools
OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
Note: Features which OCFS2 does not support yet:
- extended attributes
- quotas
- cluster aware flock
- Directory change notification (F_NOTIFY)
- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
- POSIX ACLs
- readpages / writepages (not user visible)
For more information on OCFS2, see the file
<file:Documentation/filesystems/ocfs2.txt>.
config OCFS2_DEBUG_MASKLOG
bool "OCFS2 logging support"
@@ -1028,8 +1022,8 @@ config HUGETLB_PAGE
def_bool HUGETLBFS
config CONFIGFS_FS
tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
depends on SYSFS && EXPERIMENTAL
tristate "Userspace-driven configuration filesystem"
depends on SYSFS
help
configfs is a ram-based filesystem that provides the converse
of sysfs's functionality. Where sysfs is a filesystem-based

5
fs/configfs/dir.c
Bestand weergeven

@@ -546,7 +546,7 @@ static int populate_groups(struct config_group *group)
* That said, taking our i_mutex is closer to mkdir
* emulation, and shouldn't hurt.
*/
mutex_lock(&dentry->d_inode->i_mutex);
mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
for (i = 0; group->default_groups[i]; i++) {
new_group = group->default_groups[i];
@@ -1405,7 +1405,8 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys)
sd = configfs_sb->s_root->d_fsdata;
link_group(to_config_group(sd->s_element), group);
mutex_lock(&configfs_sb->s_root->d_inode->i_mutex);
mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex,
I_MUTEX_PARENT);
name.name = group->cg_item.ci_name;
name.len = strlen(name.name);

2
fs/configfs/file.c
Bestand weergeven

@@ -320,7 +320,7 @@ int configfs_add_file(struct dentry * dir, const struct configfs_attribute * att
umode_t mode = (attr->ca_mode & S_IALLUGO) | S_IFREG;
int error = 0;
mutex_lock(&dir->d_inode->i_mutex);
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_NORMAL);
error = configfs_make_dirent(parent_sd, NULL, (void *) attr, mode, type);
mutex_unlock(&dir->d_inode->i_mutex);

5
fs/ocfs2/Makefile
Bestand weergeven

@@ -19,16 +19,17 @@ ocfs2-objs := \
ioctl.o \
journal.o \
localalloc.o \
locks.o \
mmap.o \
namei.o \
resize.o \
slot_map.o \
suballoc.o \
super.o \
symlink.o \
sysfile.o \
uptodate.o \
ver.o \
vote.o
ver.o
obj-$(CONFIG_OCFS2_FS) += cluster/
obj-$(CONFIG_OCFS2_FS) += dlm/

8
fs/ocfs2/alloc.c
Bestand weergeven

@@ -4731,7 +4731,7 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
mutex_lock(&data_alloc_inode->i_mutex);
status = ocfs2_meta_lock(data_alloc_inode, &data_alloc_bh, 1);
status = ocfs2_inode_lock(data_alloc_inode, &data_alloc_bh, 1);
if (status < 0) {
mlog_errno(status);
goto out_mutex;
@@ -4753,7 +4753,7 @@ int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
out_unlock:
brelse(data_alloc_bh);
ocfs2_meta_unlock(data_alloc_inode, 1);
ocfs2_inode_unlock(data_alloc_inode, 1);
out_mutex:
mutex_unlock(&data_alloc_inode->i_mutex);
@@ -5077,7 +5077,7 @@ static int ocfs2_free_cached_items(struct ocfs2_super *osb,
mutex_lock(&inode->i_mutex);
ret = ocfs2_meta_lock(inode, &di_bh, 1);
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret) {
mlog_errno(ret);
goto out_mutex;
@@ -5118,7 +5118,7 @@ out_journal:
ocfs2_commit_trans(osb, handle);
out_unlock:
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
out_mutex:
mutex_unlock(&inode->i_mutex);

137
fs/ocfs2/aops.c
Bestand weergeven

@@ -26,6 +26,7 @@
#include <asm/byteorder.h>
#include <linux/swap.h>
#include <linux/pipe_fs_i.h>
#include <linux/mpage.h>
#define MLOG_MASK_PREFIX ML_FILE_IO
#include <cluster/masklog.h>
@@ -139,7 +140,8 @@ static int ocfs2_get_block(struct inode *inode, sector_t iblock,
{
int err = 0;
unsigned int ext_flags;
u64 p_blkno, past_eof;
u64 max_blocks = bh_result->b_size >> inode->i_blkbits;
u64 p_blkno, count, past_eof;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry("(0x%p, %llu, 0x%p, %d)\n", inode,
@@ -155,7 +157,7 @@ static int ocfs2_get_block(struct inode *inode, sector_t iblock,
goto bail;
}
err = ocfs2_extent_map_get_blocks(inode, iblock, &p_blkno, NULL,
err = ocfs2_extent_map_get_blocks(inode, iblock, &p_blkno, &count,
&ext_flags);
if (err) {
mlog(ML_ERROR, "Error %d from get_blocks(0x%p, %llu, 1, "
@@ -164,6 +166,9 @@ static int ocfs2_get_block(struct inode *inode, sector_t iblock,
goto bail;
}
if (max_blocks < count)
count = max_blocks;
/*
* ocfs2 never allocates in this function - the only time we
* need to use BH_New is when we're extending i_size on a file
@@ -178,6 +183,8 @@ static int ocfs2_get_block(struct inode *inode, sector_t iblock,
if (p_blkno && !(ext_flags & OCFS2_EXT_UNWRITTEN))
map_bh(bh_result, inode->i_sb, p_blkno);
bh_result->b_size = count << inode->i_blkbits;
if (!ocfs2_sparse_alloc(osb)) {
if (p_blkno == 0) {
err = -EIO;
@@ -210,7 +217,7 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page,
struct buffer_head *di_bh)
{
void *kaddr;
unsigned int size;
loff_t size;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
if (!(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL)) {
@@ -224,8 +231,9 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page,
if (size > PAGE_CACHE_SIZE ||
size > ocfs2_max_inline_data(inode->i_sb)) {
ocfs2_error(inode->i_sb,
"Inode %llu has with inline data has bad size: %u",
(unsigned long long)OCFS2_I(inode)->ip_blkno, size);
"Inode %llu has with inline data has bad size: %Lu",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
(unsigned long long)size);
return -EROFS;
}
@@ -275,7 +283,7 @@ static int ocfs2_readpage(struct file *file, struct page *page)
mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0));
ret = ocfs2_meta_lock_with_page(inode, NULL, 0, page);
ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page);
if (ret != 0) {
if (ret == AOP_TRUNCATED_PAGE)
unlock = 0;
@@ -285,7 +293,7 @@ static int ocfs2_readpage(struct file *file, struct page *page)
if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
ret = AOP_TRUNCATED_PAGE;
goto out_meta_unlock;
goto out_inode_unlock;
}
/*
@@ -305,25 +313,16 @@ static int ocfs2_readpage(struct file *file, struct page *page)
goto out_alloc;
}
ret = ocfs2_data_lock_with_page(inode, 0, page);
if (ret != 0) {
if (ret == AOP_TRUNCATED_PAGE)
unlock = 0;
mlog_errno(ret);
goto out_alloc;
}
if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
ret = ocfs2_readpage_inline(inode, page);
else
ret = block_read_full_page(page, ocfs2_get_block);
unlock = 0;
ocfs2_data_unlock(inode, 0);
out_alloc:
up_read(&OCFS2_I(inode)->ip_alloc_sem);
out_meta_unlock:
ocfs2_meta_unlock(inode, 0);
out_inode_unlock:
ocfs2_inode_unlock(inode, 0);
out:
if (unlock)
unlock_page(page);
@@ -331,6 +330,62 @@ out:
return ret;
}
/*
* This is used only for read-ahead. Failures or difficult to handle
* situations are safe to ignore.
*
* Right now, we don't bother with BH_Boundary - in-inode extent lists
* are quite large (243 extents on 4k blocks), so most inodes don't
* grow out to a tree. If need be, detecting boundary extents could
* trivially be added in a future version of ocfs2_get_block().
*/
static int ocfs2_readpages(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
int ret, err = -EIO;
struct inode *inode = mapping->host;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
loff_t start;
struct page *last;
/*
* Use the nonblocking flag for the dlm code to avoid page
* lock inversion, but don't bother with retrying.
*/
ret = ocfs2_inode_lock_full(inode, NULL, 0, OCFS2_LOCK_NONBLOCK);
if (ret)
return err;
if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
ocfs2_inode_unlock(inode, 0);
return err;
}
/*
* Don't bother with inline-data. There isn't anything
* to read-ahead in that case anyway...
*/
if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
goto out_unlock;
/*
* Check whether a remote node truncated this file - we just
* drop out in that case as it's not worth handling here.
*/
last = list_entry(pages->prev, struct page, lru);
start = (loff_t)last->index << PAGE_CACHE_SHIFT;
if (start >= i_size_read(inode))
goto out_unlock;
err = mpage_readpages(mapping, pages, nr_pages, ocfs2_get_block);
out_unlock:
up_read(&oi->ip_alloc_sem);
ocfs2_inode_unlock(inode, 0);
return err;
}
/* Note: Because we don't support holes, our allocation has
* already happened (allocation writes zeros to the file data)
* so we don't have to worry about ordered writes in
@@ -452,7 +507,7 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
* accessed concurrently from multiple nodes.
*/
if (!INODE_JOURNAL(inode)) {
err = ocfs2_meta_lock(inode, NULL, 0);
err = ocfs2_inode_lock(inode, NULL, 0);
if (err) {
if (err != -ENOENT)
mlog_errno(err);
@@ -467,7 +522,7 @@ static sector_t ocfs2_bmap(struct address_space *mapping, sector_t block)
if (!INODE_JOURNAL(inode)) {
up_read(&OCFS2_I(inode)->ip_alloc_sem);
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
}
if (err) {
@@ -638,34 +693,12 @@ static ssize_t ocfs2_direct_IO(int rw,
if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
return 0;
if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) {
/*
* We get PR data locks even for O_DIRECT. This
* allows concurrent O_DIRECT I/O but doesn't let
* O_DIRECT with extending and buffered zeroing writes
* race. If they did race then the buffered zeroing
* could be written back after the O_DIRECT I/O. It's
* one thing to tell people not to mix buffered and
* O_DIRECT writes, but expecting them to understand
* that file extension is also an implicit buffered
* write is too much. By getting the PR we force
* writeback of the buffered zeroing before
* proceeding.
*/
ret = ocfs2_data_lock(inode, 0);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ocfs2_data_unlock(inode, 0);
}
ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
inode->i_sb->s_bdev, iov, offset,
nr_segs,
ocfs2_direct_IO_get_blocks,
ocfs2_dio_end_io);
out:
mlog_exit(ret);
return ret;
}
@@ -1754,7 +1787,7 @@ static int ocfs2_write_begin(struct file *file, struct address_space *mapping,
struct buffer_head *di_bh = NULL;
struct inode *inode = mapping->host;
ret = ocfs2_meta_lock(inode, &di_bh, 1);
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret) {
mlog_errno(ret);
return ret;
@@ -1769,30 +1802,22 @@ static int ocfs2_write_begin(struct file *file, struct address_space *mapping,
*/
down_write(&OCFS2_I(inode)->ip_alloc_sem);
ret = ocfs2_data_lock(inode, 1);
if (ret) {
mlog_errno(ret);
goto out_fail;
}
ret = ocfs2_write_begin_nolock(mapping, pos, len, flags, pagep,
fsdata, di_bh, NULL);
if (ret) {
mlog_errno(ret);
goto out_fail_data;
goto out_fail;
}
brelse(di_bh);
return 0;
out_fail_data:
ocfs2_data_unlock(inode, 1);
out_fail:
up_write(&OCFS2_I(inode)->ip_alloc_sem);
brelse(di_bh);
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
return ret;
}
@@ -1908,15 +1933,15 @@ static int ocfs2_write_end(struct file *file, struct address_space *mapping,
ret = ocfs2_write_end_nolock(mapping, pos, len, copied, page, fsdata);
ocfs2_data_unlock(inode, 1);
up_write(&OCFS2_I(inode)->ip_alloc_sem);
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
return ret;
}
const struct address_space_operations ocfs2_aops = {
.readpage = ocfs2_readpage,
.readpages = ocfs2_readpages,
.writepage = ocfs2_writepage,
.write_begin = ocfs2_write_begin,
.write_end = ocfs2_write_end,

65
fs/ocfs2/buffer_head_io.c
Bestand weergeven

@@ -79,7 +79,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
* information for this bh as it's not marked locally
* uptodate. */
ret = -EIO;
brelse(bh);
put_bh(bh);
}
mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
@@ -256,7 +256,7 @@ int ocfs2_read_blocks(struct ocfs2_super *osb, u64 block, int nr,
* for this bh as it's not marked locally
* uptodate. */
status = -EIO;
brelse(bh);
put_bh(bh);
bhs[i] = NULL;
continue;
}
@@ -280,3 +280,64 @@ bail:
mlog_exit(status);
return status;
}
/* Check whether the blkno is the super block or one of the backups. */
static void ocfs2_check_super_or_backup(struct super_block *sb,
sector_t blkno)
{
int i;
u64 backup_blkno;
if (blkno == OCFS2_SUPER_BLOCK_BLKNO)
return;
for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
backup_blkno = ocfs2_backup_super_blkno(sb, i);
if (backup_blkno == blkno)
return;
}
BUG();
}
/*
* Write super block and backups doesn't need to collaborate with journal,
* so we don't need to lock ip_io_mutex and inode doesn't need to bea passed
* into this function.
*/
int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
struct buffer_head *bh)
{
int ret = 0;
mlog_entry_void();
BUG_ON(buffer_jbd(bh));
ocfs2_check_super_or_backup(osb->sb, bh->b_blocknr);
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) {
ret = -EROFS;
goto out;
}
lock_buffer(bh);
set_buffer_uptodate(bh);
/* remove from dirty list before I/O. */
clear_buffer_dirty(bh);
get_bh(bh); /* for end_buffer_write_sync() */
bh->b_end_io = end_buffer_write_sync;
submit_bh(WRITE, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ret = -EIO;
put_bh(bh);
}
out:
mlog_exit(ret);
return ret;
}

2
fs/ocfs2/buffer_head_io.h
Bestand weergeven

@@ -47,6 +47,8 @@ int ocfs2_read_blocks(struct ocfs2_super *osb,
int flags,
struct inode *inode);
int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
struct buffer_head *bh);
#define OCFS2_BH_CACHED 1
#define OCFS2_BH_READAHEAD 8

2
fs/ocfs2/cluster/heartbeat.h
Bestand weergeven

@@ -35,7 +35,7 @@
#define O2HB_LIVE_THRESHOLD 2
/* number of equal samples to be seen as dead */
extern unsigned int o2hb_dead_threshold;
#define O2HB_DEFAULT_DEAD_THRESHOLD 7
#define O2HB_DEFAULT_DEAD_THRESHOLD 31
/* Otherwise MAX_WRITE_TIMEOUT will be zero... */
#define O2HB_MIN_DEAD_THRESHOLD 2
#define O2HB_MAX_WRITE_TIMEOUT_MS (O2HB_REGION_TIMEOUT_MS * (o2hb_dead_threshold - 1))

4
fs/ocfs2/cluster/tcp.h
Bestand weergeven

@@ -60,8 +60,8 @@ typedef void (o2net_post_msg_handler_func)(int status, void *data,
/* same as hb delay, we're waiting for another node to recognize our hb */
#define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000
#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 5000
#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 10000
#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000
#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000
/* TODO: figure this out.... */

8
fs/ocfs2/cluster/tcp_internal.h
Bestand weergeven

@@ -38,6 +38,12 @@
* locking semantics of the file system using the protocol. It should
* be somewhere else, I'm sure, but right now it isn't.
*
* New in version 10:
* - Meta/data locks combined
*
* New in version 9:
* - All votes removed
*
* New in version 8:
* - Replace delete inode votes with a cluster lock
*
@@ -60,7 +66,7 @@
* - full 64 bit i_size in the metadata lock lvbs
* - introduction of "rw" lock and pushing meta/data locking down
*/
#define O2NET_PROTOCOL_VERSION 8ULL
#define O2NET_PROTOCOL_VERSION 10ULL
struct o2net_handshake {
__be64 protocol_version;
__be64 connector_id;

2
fs/ocfs2/cluster/ver.c
Bestand weergeven

@@ -28,7 +28,7 @@
#include "ver.h"
#define CLUSTER_BUILD_VERSION "1.3.3"
#define CLUSTER_BUILD_VERSION "1.5.0"
#define VERSION_STR "OCFS2 Node Manager " CLUSTER_BUILD_VERSION

8
fs/ocfs2/dcache.c
Bestand weergeven

@@ -128,9 +128,9 @@ static int ocfs2_match_dentry(struct dentry *dentry,
/*
* Walk the inode alias list, and find a dentry which has a given
* parent. ocfs2_dentry_attach_lock() wants to find _any_ alias as it
* is looking for a dentry_lock reference. The vote thread is looking
* to unhash aliases, so we allow it to skip any that already have
* that property.
* is looking for a dentry_lock reference. The downconvert thread is
* looking to unhash aliases, so we allow it to skip any that already
* have that property.
*/
struct dentry *ocfs2_find_local_alias(struct inode *inode,
u64 parent_blkno,
@@ -266,7 +266,7 @@ int ocfs2_dentry_attach_lock(struct dentry *dentry,
dl->dl_count = 0;
/*
* Does this have to happen below, for all attaches, in case
* the struct inode gets blown away by votes?
* the struct inode gets blown away by the downconvert thread?
*/
dl->dl_inode = igrab(inode);
dl->dl_parent_blkno = parent_blkno;

8
fs/ocfs2/dir.c
Bestand weergeven

@@ -846,14 +846,14 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
mlog_entry("dirino=%llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
error = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
error = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
if (lock_level && error >= 0) {
/* We release EX lock which used to update atime
* and get PR lock again to reduce contention
* on commonly accessed directories. */
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
lock_level = 0;
error = ocfs2_meta_lock(inode, NULL, 0);
error = ocfs2_inode_lock(inode, NULL, 0);
}
if (error < 0) {
if (error != -ENOENT)
@@ -865,7 +865,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir)
error = ocfs2_dir_foreach_blk(inode, &filp->f_version, &filp->f_pos,
dirent, filldir, NULL);
ocfs2_meta_unlock(inode, lock_level);
ocfs2_inode_unlock(inode, lock_level);
bail_nolock:
mlog_exit(error);

2
fs/ocfs2/dlm/dlmfsver.c
Bestand weergeven

@@ -28,7 +28,7 @@
#include "dlmfsver.h"
#define DLM_BUILD_VERSION "1.3.3"
#define DLM_BUILD_VERSION "1.5.0"
#define VERSION_STR "OCFS2 DLMFS " DLM_BUILD_VERSION

19
fs/ocfs2/dlm/dlmrecovery.c
Bestand weergeven

@@ -2270,6 +2270,12 @@ static void __dlm_hb_node_down(struct dlm_ctxt *dlm, int idx)
}
}
/* Clean up join state on node death. */
if (dlm->joining_node == idx) {
mlog(0, "Clearing join state for node %u\n", idx);
__dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
}
/* check to see if the node is already considered dead */
if (!test_bit(idx, dlm->live_nodes_map)) {
mlog(0, "for domain %s, node %d is already dead. "
@@ -2288,12 +2294,6 @@ static void __dlm_hb_node_down(struct dlm_ctxt *dlm, int idx)
clear_bit(idx, dlm->live_nodes_map);
/* Clean up join state on node death. */
if (dlm->joining_node == idx) {
mlog(0, "Clearing join state for node %u\n", idx);
__dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
}
/* make sure local cleanup occurs before the heartbeat events */
if (!test_bit(idx, dlm->recovery_map))
dlm_do_local_recovery_cleanup(dlm, idx);
@@ -2321,6 +2321,13 @@ void dlm_hb_node_down_cb(struct o2nm_node *node, int idx, void *data)
if (!dlm_grab(dlm))
return;
/*
* This will notify any dlm users that a node in our domain
* went away without notifying us first.
*/
if (test_bit(idx, dlm->domain_map))
dlm_fire_domain_eviction_callbacks(dlm, idx);
spin_lock(&dlm->spinlock);
__dlm_hb_node_down(dlm, idx);
spin_unlock(&dlm->spinlock);

2
fs/ocfs2/dlm/dlmver.c
Bestand weergeven

@@ -28,7 +28,7 @@
#include "dlmver.h"
#define DLM_BUILD_VERSION "1.3.3"
#define DLM_BUILD_VERSION "1.5.0"
#define VERSION_STR "OCFS2 DLM " DLM_BUILD_VERSION

574
fs/ocfs2/dlmglue.c
Bestand weergeven

@@ -55,7 +55,6 @@
#include "slot_map.h"
#include "super.h"
#include "uptodate.h"
#include "vote.h"
#include "buffer_head_io.h"
@@ -69,6 +68,7 @@ struct ocfs2_mask_waiter {
static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres);
/*
* Return value from ->downconvert_worker functions.
@@ -153,10 +153,10 @@ struct ocfs2_lock_res_ops {
struct ocfs2_super * (*get_osb)(struct ocfs2_lock_res *);
/*
* Optionally called in the downconvert (or "vote") thread
* after a successful downconvert. The lockres will not be
* referenced after this callback is called, so it is safe to
* free memory, etc.
* Optionally called in the downconvert thread after a
* successful downconvert. The lockres will not be referenced
* after this callback is called, so it is safe to free
* memory, etc.
*
* The exact semantics of when this is called are controlled
* by ->downconvert_worker()
@@ -225,17 +225,12 @@ static struct ocfs2_lock_res_ops ocfs2_inode_rw_lops = {
.flags = 0,
};
static struct ocfs2_lock_res_ops ocfs2_inode_meta_lops = {
static struct ocfs2_lock_res_ops ocfs2_inode_inode_lops = {
.get_osb = ocfs2_get_inode_osb,
.check_downconvert = ocfs2_check_meta_downconvert,
.set_lvb = ocfs2_set_meta_lvb,
.flags = LOCK_TYPE_REQUIRES_REFRESH|LOCK_TYPE_USES_LVB,
};
static struct ocfs2_lock_res_ops ocfs2_inode_data_lops = {
.get_osb = ocfs2_get_inode_osb,
.downconvert_worker = ocfs2_data_convert_worker,
.flags = 0,
.flags = LOCK_TYPE_REQUIRES_REFRESH|LOCK_TYPE_USES_LVB,
};
static struct ocfs2_lock_res_ops ocfs2_super_lops = {
@@ -258,10 +253,14 @@ static struct ocfs2_lock_res_ops ocfs2_inode_open_lops = {
.flags = 0,
};
static struct ocfs2_lock_res_ops ocfs2_flock_lops = {
.get_osb = ocfs2_get_file_osb,
.flags = 0,
};
static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
{
return lockres->l_type == OCFS2_LOCK_TYPE_META ||
lockres->l_type == OCFS2_LOCK_TYPE_DATA ||
lockres->l_type == OCFS2_LOCK_TYPE_RW ||
lockres->l_type == OCFS2_LOCK_TYPE_OPEN;
}
@@ -310,12 +309,24 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
"resource %s: %s\n", dlm_errname(_stat), _func, \
_lockres->l_name, dlm_errmsg(_stat)); \
} while (0)
static void ocfs2_vote_on_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
static int ocfs2_meta_lock_update(struct inode *inode,
static int ocfs2_downconvert_thread(void *arg);
static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
static int ocfs2_inode_lock_update(struct inode *inode,
struct buffer_head **bh);
static void ocfs2_drop_osb_locks(struct ocfs2_super *osb);
static inline int ocfs2_highest_compat_lock_level(int level);
static void ocfs2_prepare_downconvert(struct ocfs2_lock_res *lockres,
int new_level);
static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int new_level,
int lvb);
static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
static int ocfs2_cancel_convert(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
static void ocfs2_build_lock_name(enum ocfs2_lock_type type,
u64 blkno,
@@ -402,10 +413,7 @@ void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
ops = &ocfs2_inode_rw_lops;
break;
case OCFS2_LOCK_TYPE_META:
ops = &ocfs2_inode_meta_lops;
break;
case OCFS2_LOCK_TYPE_DATA:
ops = &ocfs2_inode_data_lops;
ops = &ocfs2_inode_inode_lops;
break;
case OCFS2_LOCK_TYPE_OPEN:
ops = &ocfs2_inode_open_lops;
@@ -428,6 +436,13 @@ static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres)
return OCFS2_SB(inode->i_sb);
}
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres)
{
struct ocfs2_file_private *fp = lockres->l_priv;
return OCFS2_SB(fp->fp_file->f_mapping->host->i_sb);
}
static __u64 ocfs2_get_dentry_lock_ino(struct ocfs2_lock_res *lockres)
{
__be64 inode_blkno_be;
@@ -508,6 +523,21 @@ static void ocfs2_rename_lock_res_init(struct ocfs2_lock_res *res,
&ocfs2_rename_lops, osb);
}
void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
struct ocfs2_file_private *fp)
{
struct inode *inode = fp->fp_file->f_mapping->host;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
ocfs2_lock_res_init_once(lockres);
ocfs2_build_lock_name(OCFS2_LOCK_TYPE_FLOCK, oi->ip_blkno,
inode->i_generation, lockres->l_name);
ocfs2_lock_res_init_common(OCFS2_SB(inode->i_sb), lockres,
OCFS2_LOCK_TYPE_FLOCK, &ocfs2_flock_lops,
fp);
lockres->l_flags |= OCFS2_LOCK_NOCACHE;
}
void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
{
mlog_entry_void();
@@ -724,6 +754,13 @@ static void ocfs2_blocking_ast(void *opaque, int level)
lockres->l_name, level, lockres->l_level,
ocfs2_lock_type_string(lockres->l_type));
/*
* We can skip the bast for locks which don't enable caching -
* they'll be dropped at the earliest possible time anyway.
*/
if (lockres->l_flags & OCFS2_LOCK_NOCACHE)
return;
spin_lock_irqsave(&lockres->l_lock, flags);
needs_downconvert = ocfs2_generic_handle_bast(lockres, level);
if (needs_downconvert)
@@ -732,7 +769,7 @@ static void ocfs2_blocking_ast(void *opaque, int level)
wake_up(&lockres->l_event);
ocfs2_kick_vote_thread(osb);
ocfs2_wake_downconvert_thread(osb);
}
static void ocfs2_locking_ast(void *opaque)
@@ -935,6 +972,21 @@ static int lockres_remove_mask_waiter(struct ocfs2_lock_res *lockres,
}
static int ocfs2_wait_for_mask_interruptible(struct ocfs2_mask_waiter *mw,
struct ocfs2_lock_res *lockres)
{
int ret;
ret = wait_for_completion_interruptible(&mw->mw_complete);
if (ret)
lockres_remove_mask_waiter(lockres, mw);
else
ret = mw->mw_status;
/* Re-arm the completion in case we want to wait on it again */
INIT_COMPLETION(mw->mw_complete);
return ret;
}
static int ocfs2_cluster_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
@@ -1089,7 +1141,7 @@ static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
mlog_entry_void();
spin_lock_irqsave(&lockres->l_lock, flags);
ocfs2_dec_holders(lockres, level);
ocfs2_vote_on_unlock(osb, lockres);
ocfs2_downconvert_on_unlock(osb, lockres);
spin_unlock_irqrestore(&lockres->l_lock, flags);
mlog_exit_void();
}
@@ -1147,13 +1199,7 @@ int ocfs2_create_new_inode_locks(struct inode *inode)
* We don't want to use LKM_LOCAL on a meta data lock as they
* don't use a generation in their lock names.
*/
ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_meta_lockres, 1, 0);
if (ret) {
mlog_errno(ret);
goto bail;
}
ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_data_lockres, 1, 1);
ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_inode_lockres, 1, 0);
if (ret) {
mlog_errno(ret);
goto bail;
@@ -1311,76 +1357,221 @@ out:
mlog_exit_void();
}
int ocfs2_data_lock_full(struct inode *inode,
int write,
int arg_flags)
{
int status = 0, level;
struct ocfs2_lock_res *lockres;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
BUG_ON(!inode);
mlog_entry_void();
mlog(0, "inode %llu take %s DATA lock\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : "PRMODE");
/* We'll allow faking a readonly data lock for
* rodevices. */
if (ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb))) {
if (write) {
status = -EROFS;
mlog_errno(status);
}
goto out;
}
if (ocfs2_mount_local(osb))
goto out;
lockres = &OCFS2_I(inode)->ip_data_lockres;
level = write ? LKM_EXMODE : LKM_PRMODE;
status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres, level,
0, arg_flags);
if (status < 0 && status != -EAGAIN)
mlog_errno(status);
out:
mlog_exit(status);
return status;
}
/* see ocfs2_meta_lock_with_page() */
int ocfs2_data_lock_with_page(struct inode *inode,
int write,
struct page *page)
static int ocfs2_flock_handle_signal(struct ocfs2_lock_res *lockres,
int level)
{
int ret;
struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);
unsigned long flags;
struct ocfs2_mask_waiter mw;
ret = ocfs2_data_lock_full(inode, write, OCFS2_LOCK_NONBLOCK);
if (ret == -EAGAIN) {
unlock_page(page);
if (ocfs2_data_lock(inode, write) == 0)
ocfs2_data_unlock(inode, write);
ret = AOP_TRUNCATED_PAGE;
ocfs2_init_mask_waiter(&mw);
retry_cancel:
spin_lock_irqsave(&lockres->l_lock, flags);
if (lockres->l_flags & OCFS2_LOCK_BUSY) {
ret = ocfs2_prepare_cancel_convert(osb, lockres);
if (ret) {
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = ocfs2_cancel_convert(osb, lockres);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
goto retry_cancel;
}
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
spin_unlock_irqrestore(&lockres->l_lock, flags);
ocfs2_wait_for_mask(&mw);
goto retry_cancel;
}
ret = -ERESTARTSYS;
/*
* We may still have gotten the lock, in which case there's no
* point to restarting the syscall.
*/
if (lockres->l_level == level)
ret = 0;
mlog(0, "Cancel returning %d. flags: 0x%lx, level: %d, act: %d\n", ret,
lockres->l_flags, lockres->l_level, lockres->l_action);
spin_unlock_irqrestore(&lockres->l_lock, flags);
out:
return ret;
}
static void ocfs2_vote_on_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres)
/*
* ocfs2_file_lock() and ocfs2_file_unlock() map to a single pair of
* flock() calls. The locking approach this requires is sufficiently
* different from all other cluster lock types that we implement a
* seperate path to the "low-level" dlm calls. In particular:
*
* - No optimization of lock levels is done - we take at exactly
* what's been requested.
*
* - No lock caching is employed. We immediately downconvert to
* no-lock at unlock time. This also means flock locks never go on
* the blocking list).
*
* - Since userspace can trivially deadlock itself with flock, we make
* sure to allow cancellation of a misbehaving applications flock()
* request.
*
* - Access to any flock lockres doesn't require concurrency, so we
* can simplify the code by requiring the caller to guarantee
* serialization of dlmglue flock calls.
*/
int ocfs2_file_lock(struct file *file, int ex, int trylock)
{
int ret, level = ex ? LKM_EXMODE : LKM_PRMODE;
unsigned int lkm_flags = trylock ? LKM_NOQUEUE : 0;
unsigned long flags;
struct ocfs2_file_private *fp = file->private_data;
struct ocfs2_lock_res *lockres = &fp->fp_flock;
struct ocfs2_super *osb = OCFS2_SB(file->f_mapping->host->i_sb);
struct ocfs2_mask_waiter mw;
ocfs2_init_mask_waiter(&mw);
if ((lockres->l_flags & OCFS2_LOCK_BUSY) ||
(lockres->l_level > LKM_NLMODE)) {
mlog(ML_ERROR,
"File lock \"%s\" has busy or locked state: flags: 0x%lx, "
"level: %u\n", lockres->l_name, lockres->l_flags,
lockres->l_level);
return -EINVAL;
}
spin_lock_irqsave(&lockres->l_lock, flags);
if (!(lockres->l_flags & OCFS2_LOCK_ATTACHED)) {
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
spin_unlock_irqrestore(&lockres->l_lock, flags);
/*
* Get the lock at NLMODE to start - that way we
* can cancel the upconvert request if need be.
*/
ret = ocfs2_lock_create(osb, lockres, LKM_NLMODE, 0);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_wait_for_mask(&mw);
if (ret) {
mlog_errno(ret);
goto out;
}
spin_lock_irqsave(&lockres->l_lock, flags);
}
lockres->l_action = OCFS2_AST_CONVERT;
lkm_flags |= LKM_CONVERT;
lockres->l_requested = level;
lockres_or_flags(lockres, OCFS2_LOCK_BUSY);
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = dlmlock(osb->dlm, level, &lockres->l_lksb, lkm_flags,
lockres->l_name, OCFS2_LOCK_ID_MAX_LEN - 1,
ocfs2_locking_ast, lockres, ocfs2_blocking_ast);
if (ret != DLM_NORMAL) {
if (trylock && ret == DLM_NOTQUEUED)
ret = -EAGAIN;
else {
ocfs2_log_dlm_error("dlmlock", ret, lockres);
ret = -EINVAL;
}
ocfs2_recover_from_dlm_error(lockres, 1);
lockres_remove_mask_waiter(lockres, &mw);
goto out;
}
ret = ocfs2_wait_for_mask_interruptible(&mw, lockres);
if (ret == -ERESTARTSYS) {
/*
* Userspace can cause deadlock itself with
* flock(). Current behavior locally is to allow the
* deadlock, but abort the system call if a signal is
* received. We follow this example, otherwise a
* poorly written program could sit in kernel until
* reboot.
*
* Handling this is a bit more complicated for Ocfs2
* though. We can't exit this function with an
* outstanding lock request, so a cancel convert is
* required. We intentionally overwrite 'ret' - if the
* cancel fails and the lock was granted, it's easier
* to just bubble sucess back up to the user.
*/
ret = ocfs2_flock_handle_signal(lockres, level);
}
out:
mlog(0, "Lock: \"%s\" ex: %d, trylock: %d, returns: %d\n",
lockres->l_name, ex, trylock, ret);
return ret;
}
void ocfs2_file_unlock(struct file *file)
{
int ret;
unsigned long flags;
struct ocfs2_file_private *fp = file->private_data;
struct ocfs2_lock_res *lockres = &fp->fp_flock;
struct ocfs2_super *osb = OCFS2_SB(file->f_mapping->host->i_sb);
struct ocfs2_mask_waiter mw;
ocfs2_init_mask_waiter(&mw);
if (!(lockres->l_flags & OCFS2_LOCK_ATTACHED))
return;
if (lockres->l_level == LKM_NLMODE)
return;
mlog(0, "Unlock: \"%s\" flags: 0x%lx, level: %d, act: %d\n",
lockres->l_name, lockres->l_flags, lockres->l_level,
lockres->l_action);
spin_lock_irqsave(&lockres->l_lock, flags);
/*
* Fake a blocking ast for the downconvert code.
*/
lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
lockres->l_blocking = LKM_EXMODE;
ocfs2_prepare_downconvert(lockres, LKM_NLMODE);
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = ocfs2_downconvert_lock(osb, lockres, LKM_NLMODE, 0);
if (ret) {
mlog_errno(ret);
return;
}
ret = ocfs2_wait_for_mask(&mw);
if (ret)
mlog_errno(ret);
}
static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres)
{
int kick = 0;
mlog_entry_void();
/* If we know that another node is waiting on our lock, kick
* the vote thread * pre-emptively when we reach a release
* the downconvert thread * pre-emptively when we reach a release
* condition. */
if (lockres->l_flags & OCFS2_LOCK_BLOCKED) {
switch(lockres->l_blocking) {
@@ -1398,27 +1589,7 @@ static void ocfs2_vote_on_unlock(struct ocfs2_super *osb,
}
if (kick)
ocfs2_kick_vote_thread(osb);
mlog_exit_void();
}
void ocfs2_data_unlock(struct inode *inode,
int write)
{
int level = write ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_data_lockres;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
mlog(0, "inode %llu drop %s DATA lock\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : "PRMODE");
if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)) &&
!ocfs2_mount_local(osb))
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
ocfs2_wake_downconvert_thread(osb);
mlog_exit_void();
}
@@ -1442,11 +1613,11 @@ static u64 ocfs2_pack_timespec(struct timespec *spec)
/* Call this with the lockres locked. I am reasonably sure we don't
* need ip_lock in this function as anyone who would be changing those
* values is supposed to be blocked in ocfs2_meta_lock right now. */
* values is supposed to be blocked in ocfs2_inode_lock right now. */
static void __ocfs2_stuff_meta_lvb(struct inode *inode)
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_lock_res *lockres = &oi->ip_meta_lockres;
struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres;
struct ocfs2_meta_lvb *lvb;
mlog_entry_void();
@@ -1496,7 +1667,7 @@ static void ocfs2_unpack_timespec(struct timespec *spec,
static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_lock_res *lockres = &oi->ip_meta_lockres;
struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres;
struct ocfs2_meta_lvb *lvb;
mlog_entry_void();
@@ -1604,12 +1775,12 @@ static inline void ocfs2_complete_lock_res_refresh(struct ocfs2_lock_res *lockre
}
/* may or may not return a bh if it went to disk. */
static int ocfs2_meta_lock_update(struct inode *inode,
static int ocfs2_inode_lock_update(struct inode *inode,
struct buffer_head **bh)
{
int status = 0;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_lock_res *lockres = &oi->ip_meta_lockres;
struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres;
struct ocfs2_dinode *fe;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
@@ -1721,7 +1892,7 @@ static int ocfs2_assign_bh(struct inode *inode,
* returns < 0 error if the callback will never be called, otherwise
* the result of the lock will be communicated via the callback.
*/
int ocfs2_meta_lock_full(struct inode *inode,
int ocfs2_inode_lock_full(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
int arg_flags)
@@ -1756,7 +1927,7 @@ int ocfs2_meta_lock_full(struct inode *inode,
wait_event(osb->recovery_event,
ocfs2_node_map_is_empty(osb, &osb->recovery_map));
lockres = &OCFS2_I(inode)->ip_meta_lockres;
lockres = &OCFS2_I(inode)->ip_inode_lockres;
level = ex ? LKM_EXMODE : LKM_PRMODE;
dlm_flags = 0;
if (arg_flags & OCFS2_META_LOCK_NOQUEUE)
@@ -1795,11 +1966,11 @@ local:
}
/* This is fun. The caller may want a bh back, or it may
* not. ocfs2_meta_lock_update definitely wants one in, but
* not. ocfs2_inode_lock_update definitely wants one in, but
* may or may not read one, depending on what's in the
* LVB. The result of all of this is that we've *only* gone to
* disk if we have to, so the complexity is worthwhile. */
status = ocfs2_meta_lock_update(inode, &local_bh);
status = ocfs2_inode_lock_update(inode, &local_bh);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1821,7 +1992,7 @@ bail:
*ret_bh = NULL;
}
if (acquired)
ocfs2_meta_unlock(inode, ex);
ocfs2_inode_unlock(inode, ex);
}
if (local_bh)
@@ -1832,19 +2003,20 @@ bail:
}
/*
* This is working around a lock inversion between tasks acquiring DLM locks
* while holding a page lock and the vote thread which blocks dlm lock acquiry
* while acquiring page locks.
* This is working around a lock inversion between tasks acquiring DLM
* locks while holding a page lock and the downconvert thread which
* blocks dlm lock acquiry while acquiring page locks.
*
* ** These _with_page variantes are only intended to be called from aop
* methods that hold page locks and return a very specific *positive* error
* code that aop methods pass up to the VFS -- test for errors with != 0. **
*
* The DLM is called such that it returns -EAGAIN if it would have blocked
* waiting for the vote thread. In that case we unlock our page so the vote
* thread can make progress. Once we've done this we have to return
* AOP_TRUNCATED_PAGE so the aop method that called us can bubble that back up
* into the VFS who will then immediately retry the aop call.
* The DLM is called such that it returns -EAGAIN if it would have
* blocked waiting for the downconvert thread. In that case we unlock
* our page so the downconvert thread can make progress. Once we've
* done this we have to return AOP_TRUNCATED_PAGE so the aop method
* that called us can bubble that back up into the VFS who will then
* immediately retry the aop call.
*
* We do a blocking lock and immediate unlock before returning, though, so that
* the lock has a great chance of being cached on this node by the time the VFS
@@ -1852,32 +2024,32 @@ bail:
* ping locks back and forth, but that's a risk we're willing to take to avoid
* the lock inversion simply.
*/
int ocfs2_meta_lock_with_page(struct inode *inode,
int ocfs2_inode_lock_with_page(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
struct page *page)
{
int ret;
ret = ocfs2_meta_lock_full(inode, ret_bh, ex, OCFS2_LOCK_NONBLOCK);
ret = ocfs2_inode_lock_full(inode, ret_bh, ex, OCFS2_LOCK_NONBLOCK);
if (ret == -EAGAIN) {
unlock_page(page);
if (ocfs2_meta_lock(inode, ret_bh, ex) == 0)
ocfs2_meta_unlock(inode, ex);
if (ocfs2_inode_lock(inode, ret_bh, ex) == 0)
ocfs2_inode_unlock(inode, ex);
ret = AOP_TRUNCATED_PAGE;
}
return ret;
}
int ocfs2_meta_lock_atime(struct inode *inode,
int ocfs2_inode_lock_atime(struct inode *inode,
struct vfsmount *vfsmnt,
int *level)
{
int ret;
mlog_entry_void();
ret = ocfs2_meta_lock(inode, NULL, 0);
ret = ocfs2_inode_lock(inode, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
return ret;
@@ -1890,8 +2062,8 @@ int ocfs2_meta_lock_atime(struct inode *inode,
if (ocfs2_should_update_atime(inode, vfsmnt)) {
struct buffer_head *bh = NULL;
ocfs2_meta_unlock(inode, 0);
ret = ocfs2_meta_lock(inode, &bh, 1);
ocfs2_inode_unlock(inode, 0);
ret = ocfs2_inode_lock(inode, &bh, 1);
if (ret < 0) {
mlog_errno(ret);
return ret;
@@ -1908,11 +2080,11 @@ int ocfs2_meta_lock_atime(struct inode *inode,
return ret;
}
void ocfs2_meta_unlock(struct inode *inode,
void ocfs2_inode_unlock(struct inode *inode,
int ex)
{
int level = ex ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_meta_lockres;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_inode_lockres;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
@@ -2320,11 +2492,11 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
goto bail;
}
/* launch vote thread */
osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote");
if (IS_ERR(osb->vote_task)) {
status = PTR_ERR(osb->vote_task);
osb->vote_task = NULL;
/* launch downconvert thread */
osb->dc_task = kthread_run(ocfs2_downconvert_thread, osb, "ocfs2dc");
if (IS_ERR(osb->dc_task)) {
status = PTR_ERR(osb->dc_task);
osb->dc_task = NULL;
mlog_errno(status);
goto bail;
}
@@ -2353,8 +2525,8 @@ local:
bail:
if (status < 0) {
ocfs2_dlm_shutdown_debug(osb);
if (osb->vote_task)
kthread_stop(osb->vote_task);
if (osb->dc_task)
kthread_stop(osb->dc_task);
}
mlog_exit(status);
@@ -2369,9 +2541,9 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb)
ocfs2_drop_osb_locks(osb);
if (osb->vote_task) {
kthread_stop(osb->vote_task);
osb->vote_task = NULL;
if (osb->dc_task) {
kthread_stop(osb->dc_task);
osb->dc_task = NULL;
}
ocfs2_lock_res_free(&osb->osb_super_lockres);
@@ -2527,7 +2699,7 @@ out:
/* Mark the lockres as being dropped. It will no longer be
* queued if blocking, but we still may have to wait on it
* being dequeued from the vote thread before we can consider
* being dequeued from the downconvert thread before we can consider
* it safe to drop.
*
* You can *not* attempt to call cluster_lock on this lockres anymore. */
@@ -2590,14 +2762,7 @@ int ocfs2_drop_inode_locks(struct inode *inode)
status = err;
err = ocfs2_drop_lock(OCFS2_SB(inode->i_sb),
&OCFS2_I(inode)->ip_data_lockres);
if (err < 0)
mlog_errno(err);
if (err < 0 && !status)
status = err;
err = ocfs2_drop_lock(OCFS2_SB(inode->i_sb),
&OCFS2_I(inode)->ip_meta_lockres);
&OCFS2_I(inode)->ip_inode_lockres);
if (err < 0)
mlog_errno(err);
if (err < 0 && !status)
@@ -2850,6 +3015,9 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
inode = ocfs2_lock_res_inode(lockres);
mapping = inode->i_mapping;
if (S_ISREG(inode->i_mode))
goto out;
/*
* We need this before the filemap_fdatawrite() so that it can
* transfer the dirty bit from the PTE to the
@@ -2875,6 +3043,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
filemap_fdatawait(mapping);
}
out:
return UNBLOCK_CONTINUE;
}
@@ -2903,7 +3072,7 @@ static void ocfs2_set_meta_lvb(struct ocfs2_lock_res *lockres)
/*
* Does the final reference drop on our dentry lock. Right now this
* happens in the vote thread, but we could choose to simplify the
* happens in the downconvert thread, but we could choose to simplify the
* dlmglue API and push these off to the ocfs2_wq in the future.
*/
static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
@@ -3042,7 +3211,7 @@ void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
mlog(0, "lockres %s blocked.\n", lockres->l_name);
/* Detect whether a lock has been marked as going away while
* the vote thread was processing other things. A lock can
* the downconvert thread was processing other things. A lock can
* still be marked with OCFS2_LOCK_FREEING after this check,
* but short circuiting here will still save us some
* performance. */
@@ -3091,13 +3260,104 @@ static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
lockres_or_flags(lockres, OCFS2_LOCK_QUEUED);
spin_lock(&osb->vote_task_lock);
spin_lock(&osb->dc_task_lock);
if (list_empty(&lockres->l_blocked_list)) {
list_add_tail(&lockres->l_blocked_list,
&osb->blocked_lock_list);
osb->blocked_lock_count++;
}
spin_unlock(&osb->vote_task_lock);
spin_unlock(&osb->dc_task_lock);
mlog_exit_void();
}
static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
{
unsigned long processed;
struct ocfs2_lock_res *lockres;
mlog_entry_void();
spin_lock(&osb->dc_task_lock);
/* grab this early so we know to try again if a state change and
* wake happens part-way through our work */
osb->dc_work_sequence = osb->dc_wake_sequence;
processed = osb->blocked_lock_count;
while (processed) {
BUG_ON(list_empty(&osb->blocked_lock_list));
lockres = list_entry(osb->blocked_lock_list.next,
struct ocfs2_lock_res, l_blocked_list);
list_del_init(&lockres->l_blocked_list);
osb->blocked_lock_count--;
spin_unlock(&osb->dc_task_lock);
BUG_ON(!processed);
processed--;
ocfs2_process_blocked_lock(osb, lockres);
spin_lock(&osb->dc_task_lock);
}
spin_unlock(&osb->dc_task_lock);
mlog_exit_void();
}
static int ocfs2_downconvert_thread_lists_empty(struct ocfs2_super *osb)
{
int empty = 0;
spin_lock(&osb->dc_task_lock);
if (list_empty(&osb->blocked_lock_list))
empty = 1;
spin_unlock(&osb->dc_task_lock);
return empty;
}
static int ocfs2_downconvert_thread_should_wake(struct ocfs2_super *osb)
{
int should_wake = 0;
spin_lock(&osb->dc_task_lock);
if (osb->dc_work_sequence != osb->dc_wake_sequence)
should_wake = 1;
spin_unlock(&osb->dc_task_lock);
return should_wake;
}
int ocfs2_downconvert_thread(void *arg)
{
int status = 0;
struct ocfs2_super *osb = arg;
/* only quit once we've been asked to stop and there is no more
* work available */
while (!(kthread_should_stop() &&
ocfs2_downconvert_thread_lists_empty(osb))) {
wait_event_interruptible(osb->dc_event,
ocfs2_downconvert_thread_should_wake(osb) ||
kthread_should_stop());
mlog(0, "downconvert_thread: awoken\n");
ocfs2_downconvert_thread_do_work(osb);
}
osb->dc_task = NULL;
return status;
}
void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb)
{
spin_lock(&osb->dc_task_lock);
/* make sure the voting thread gets a swipe at whatever changes
* the caller may have made to the voting state */
osb->dc_wake_sequence++;
spin_unlock(&osb->dc_task_lock);
wake_up(&osb->dc_event);
}

31
fs/ocfs2/dlmglue.h
Bestand weergeven

@@ -49,12 +49,12 @@ struct ocfs2_meta_lvb {
__be32 lvb_reserved2;
};
/* ocfs2_meta_lock_full() and ocfs2_data_lock_full() 'arg_flags' flags */
/* ocfs2_inode_lock_full() 'arg_flags' flags */
/* don't wait on recovery. */
#define OCFS2_META_LOCK_RECOVERY (0x01)
/* Instruct the dlm not to queue ourselves on the other node. */
#define OCFS2_META_LOCK_NOQUEUE (0x02)
/* don't block waiting for the vote thread, instead return -EAGAIN */
/* don't block waiting for the downconvert thread, instead return -EAGAIN */
#define OCFS2_LOCK_NONBLOCK (0x04)
int ocfs2_dlm_init(struct ocfs2_super *osb);
@@ -66,38 +66,32 @@ void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
struct inode *inode);
void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
u64 parent, struct inode *inode);
struct ocfs2_file_private;
void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
struct ocfs2_file_private *fp);
void ocfs2_lock_res_free(struct ocfs2_lock_res *res);
int ocfs2_create_new_inode_locks(struct inode *inode);
int ocfs2_drop_inode_locks(struct inode *inode);
int ocfs2_data_lock_full(struct inode *inode,
int write,
int arg_flags);
#define ocfs2_data_lock(inode, write) ocfs2_data_lock_full(inode, write, 0)
int ocfs2_data_lock_with_page(struct inode *inode,
int write,
struct page *page);
void ocfs2_data_unlock(struct inode *inode,
int write);
int ocfs2_rw_lock(struct inode *inode, int write);
void ocfs2_rw_unlock(struct inode *inode, int write);
int ocfs2_open_lock(struct inode *inode);
int ocfs2_try_open_lock(struct inode *inode, int write);
void ocfs2_open_unlock(struct inode *inode);
int ocfs2_meta_lock_atime(struct inode *inode,
int ocfs2_inode_lock_atime(struct inode *inode,
struct vfsmount *vfsmnt,
int *level);
int ocfs2_meta_lock_full(struct inode *inode,
int ocfs2_inode_lock_full(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
int arg_flags);
int ocfs2_meta_lock_with_page(struct inode *inode,
int ocfs2_inode_lock_with_page(struct inode *inode,
struct buffer_head **ret_bh,
int ex,
struct page *page);
/* 99% of the time we don't want to supply any additional flags --
* those are for very specific cases only. */
#define ocfs2_meta_lock(i, b, e) ocfs2_meta_lock_full(i, b, e, 0)
void ocfs2_meta_unlock(struct inode *inode,
#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full(i, b, e, 0)
void ocfs2_inode_unlock(struct inode *inode,
int ex);
int ocfs2_super_lock(struct ocfs2_super *osb,
int ex);
@@ -107,14 +101,17 @@ int ocfs2_rename_lock(struct ocfs2_super *osb);
void ocfs2_rename_unlock(struct ocfs2_super *osb);
int ocfs2_dentry_lock(struct dentry *dentry, int ex);
void ocfs2_dentry_unlock(struct dentry *dentry, int ex);
int ocfs2_file_lock(struct file *file, int ex, int trylock);
void ocfs2_file_unlock(struct file *file);
void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres);
void ocfs2_simple_drop_lockres(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
/* for the vote thread */
/* for the downconvert thread */
void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb);
struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void);
void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug);

5
fs/ocfs2/endian.h
Bestand weergeven

@@ -37,11 +37,6 @@ static inline void le64_add_cpu(__le64 *var, u64 val)
*var = cpu_to_le64(le64_to_cpu(*var) + val);
}
static inline void le32_and_cpu(__le32 *var, u32 val)
{
*var = cpu_to_le32(le32_to_cpu(*var) & val);
}
static inline void be32_add_cpu(__be32 *var, u32 val)
{
*var = cpu_to_be32(be32_to_cpu(*var) + val);

8
fs/ocfs2/export.c
Bestand weergeven

@@ -58,7 +58,7 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
return ERR_PTR(-ESTALE);
}
inode = ocfs2_iget(OCFS2_SB(sb), handle->ih_blkno, 0);
inode = ocfs2_iget(OCFS2_SB(sb), handle->ih_blkno, 0, 0);
if (IS_ERR(inode))
return (void *)inode;
@@ -95,7 +95,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
mlog(0, "find parent of directory %llu\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno);
status = ocfs2_meta_lock(dir, NULL, 0);
status = ocfs2_inode_lock(dir, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -109,7 +109,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
goto bail_unlock;
}
inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0);
inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
if (IS_ERR(inode)) {
mlog(ML_ERROR, "Unable to create inode %llu\n",
(unsigned long long)blkno);
@@ -126,7 +126,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
parent->d_op = &ocfs2_dentry_ops;
bail_unlock:
ocfs2_meta_unlock(dir, 0);
ocfs2_inode_unlock(dir, 0);
bail:
mlog_exit_ptr(parent);

163
fs/ocfs2/file.c
Bestand weergeven

@@ -51,6 +51,7 @@
#include "inode.h"
#include "ioctl.h"
#include "journal.h"
#include "locks.h"
#include "mmap.h"
#include "suballoc.h"
#include "super.h"
@@ -63,6 +64,35 @@ static int ocfs2_sync_inode(struct inode *inode)
return sync_mapping_buffers(inode->i_mapping);
}
static int ocfs2_init_file_private(struct inode *inode, struct file *file)
{
struct ocfs2_file_private *fp;
fp = kzalloc(sizeof(struct ocfs2_file_private), GFP_KERNEL);
if (!fp)
return -ENOMEM;
fp->fp_file = file;
mutex_init(&fp->fp_mutex);
ocfs2_file_lock_res_init(&fp->fp_flock, fp);
file->private_data = fp;
return 0;
}
static void ocfs2_free_file_private(struct inode *inode, struct file *file)
{
struct ocfs2_file_private *fp = file->private_data;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (fp) {
ocfs2_simple_drop_lockres(osb, &fp->fp_flock);
ocfs2_lock_res_free(&fp->fp_flock);
kfree(fp);
file->private_data = NULL;
}
}
static int ocfs2_file_open(struct inode *inode, struct file *file)
{
int status;
@@ -89,7 +119,18 @@ static int ocfs2_file_open(struct inode *inode, struct file *file)
oi->ip_open_count++;
spin_unlock(&oi->ip_lock);
status = 0;
status = ocfs2_init_file_private(inode, file);
if (status) {
/*
* We want to set open count back if we're failing the
* open.
*/
spin_lock(&oi->ip_lock);
oi->ip_open_count--;
spin_unlock(&oi->ip_lock);
}
leave:
mlog_exit(status);
return status;
@@ -108,11 +149,24 @@ static int ocfs2_file_release(struct inode *inode, struct file *file)
oi->ip_flags &= ~OCFS2_INODE_OPEN_DIRECT;
spin_unlock(&oi->ip_lock);
ocfs2_free_file_private(inode, file);
mlog_exit(0);
return 0;
}
static int ocfs2_dir_open(struct inode *inode, struct file *file)
{
return ocfs2_init_file_private(inode, file);
}
static int ocfs2_dir_release(struct inode *inode, struct file *file)
{
ocfs2_free_file_private(inode, file);
return 0;
}
static int ocfs2_sync_file(struct file *file,
struct dentry *dentry,
int datasync)
@@ -382,18 +436,13 @@ static int ocfs2_truncate_file(struct inode *inode,
down_write(&OCFS2_I(inode)->ip_alloc_sem);
/* This forces other nodes to sync and drop their pages. Do
* this even if we have a truncate without allocation change -
* ocfs2 cluster sizes can be much greater than page size, so
* we have to truncate them anyway. */
status = ocfs2_data_lock(inode, 1);
if (status < 0) {
up_write(&OCFS2_I(inode)->ip_alloc_sem);
mlog_errno(status);
goto bail;
}
/*
* The inode lock forced other nodes to sync and drop their
* pages, which (correctly) happens even if we have a truncate
* without allocation change - ocfs2 cluster sizes can be much
* greater than page size, so we have to truncate them
* anyway.
*/
unmap_mapping_range(inode->i_mapping, new_i_size + PAGE_SIZE - 1, 0, 1);
truncate_inode_pages(inode->i_mapping, new_i_size);
@@ -403,7 +452,7 @@ static int ocfs2_truncate_file(struct inode *inode,
if (status)
mlog_errno(status);
goto bail_unlock_data;
goto bail_unlock_sem;
}
/* alright, we're going to need to do a full blown alloc size
@@ -413,25 +462,23 @@ static int ocfs2_truncate_file(struct inode *inode,
status = ocfs2_orphan_for_truncate(osb, inode, di_bh, new_i_size);
if (status < 0) {
mlog_errno(status);
goto bail_unlock_data;
goto bail_unlock_sem;
}
status = ocfs2_prepare_truncate(osb, inode, di_bh, &tc);
if (status < 0) {
mlog_errno(status);
goto bail_unlock_data;
goto bail_unlock_sem;
}
status = ocfs2_commit_truncate(osb, inode, di_bh, tc);
if (status < 0) {
mlog_errno(status);
goto bail_unlock_data;
goto bail_unlock_sem;
}
/* TODO: orphan dir cleanup here. */
bail_unlock_data:
ocfs2_data_unlock(inode, 1);
bail_unlock_sem:
up_write(&OCFS2_I(inode)->ip_alloc_sem);
bail:
@@ -579,7 +626,7 @@ int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di,
mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u, "
"clusters_to_add = %u, extents_to_split = %u\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno, i_size_read(inode),
(unsigned long long)OCFS2_I(inode)->ip_blkno, (long long)i_size_read(inode),
le32_to_cpu(di->i_clusters), clusters_to_add, extents_to_split);
num_free_extents = ocfs2_num_free_extents(osb, inode, di);
@@ -760,7 +807,7 @@ restarted_transaction:
le32_to_cpu(fe->i_clusters),
(unsigned long long)le64_to_cpu(fe->i_size));
mlog(0, "inode: ip_clusters=%u, i_size=%lld\n",
OCFS2_I(inode)->ip_clusters, i_size_read(inode));
OCFS2_I(inode)->ip_clusters, (long long)i_size_read(inode));
leave:
if (handle) {
@@ -917,7 +964,7 @@ static int ocfs2_extend_file(struct inode *inode,
struct buffer_head *di_bh,
u64 new_i_size)
{
int ret = 0, data_locked = 0;
int ret = 0;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
BUG_ON(!di_bh);
@@ -943,20 +990,6 @@ static int ocfs2_extend_file(struct inode *inode,
&& ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
goto out_update_size;
/*
* protect the pages that ocfs2_zero_extend is going to be
* pulling into the page cache.. we do this before the
* metadata extend so that we don't get into the situation
* where we've extended the metadata but can't get the data
* lock to zero.
*/
ret = ocfs2_data_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
data_locked = 1;
/*
* The alloc sem blocks people in read/write from reading our
* allocation until we're done changing it. We depend on
@@ -980,7 +1013,7 @@ static int ocfs2_extend_file(struct inode *inode,
up_write(&oi->ip_alloc_sem);
mlog_errno(ret);
goto out_unlock;
goto out;
}
}
@@ -991,7 +1024,7 @@ static int ocfs2_extend_file(struct inode *inode,
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
goto out;
}
out_update_size:
@@ -999,10 +1032,6 @@ out_update_size:
if (ret < 0)
mlog_errno(ret);
out_unlock:
if (data_locked)
ocfs2_data_unlock(inode, 1);
out:
return ret;
}
@@ -1050,7 +1079,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
}
status = ocfs2_meta_lock(inode, &bh, 1);
status = ocfs2_inode_lock(inode, &bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1102,7 +1131,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
bail_commit:
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
bail_unlock_rw:
if (size_change)
ocfs2_rw_unlock(inode, 1);
@@ -1149,7 +1178,7 @@ int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
mlog_entry_void();
ret = ocfs2_meta_lock(inode, NULL, 0);
ret = ocfs2_inode_lock(inode, NULL, 0);
if (ret) {
if (ret != -ENOENT)
mlog_errno(ret);
@@ -1158,7 +1187,7 @@ int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
ret = generic_permission(inode, mask, NULL);
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
out:
mlog_exit(ret);
return ret;
@@ -1630,7 +1659,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
goto out;
}
ret = ocfs2_meta_lock(inode, &di_bh, 1);
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret) {
mlog_errno(ret);
goto out_rw_unlock;
@@ -1638,7 +1667,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) {
ret = -EPERM;
goto out_meta_unlock;
goto out_inode_unlock;
}
switch (sr->l_whence) {
@@ -1652,7 +1681,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
break;
default:
ret = -EINVAL;
goto out_meta_unlock;
goto out_inode_unlock;
}
sr->l_whence = 0;
@@ -1663,14 +1692,14 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
|| (sr->l_start + llen) < 0
|| (sr->l_start + llen) > max_off) {
ret = -EINVAL;
goto out_meta_unlock;
goto out_inode_unlock;
}
size = sr->l_start + sr->l_len;
if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) {
if (sr->l_len <= 0) {
ret = -EINVAL;
goto out_meta_unlock;
goto out_inode_unlock;
}
}
@@ -1678,7 +1707,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
ret = __ocfs2_write_remove_suid(inode, di_bh);
if (ret) {
mlog_errno(ret);
goto out_meta_unlock;
goto out_inode_unlock;
}
}
@@ -1704,7 +1733,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
up_write(&OCFS2_I(inode)->ip_alloc_sem);
if (ret) {
mlog_errno(ret);
goto out_meta_unlock;
goto out_inode_unlock;
}
/*
@@ -1714,7 +1743,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
mlog_errno(ret);
goto out_meta_unlock;
goto out_inode_unlock;
}
if (change_size && i_size_read(inode) < size)
@@ -1727,9 +1756,9 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
ocfs2_commit_trans(osb, handle);
out_meta_unlock:
out_inode_unlock:
brelse(di_bh);
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
out_rw_unlock:
ocfs2_rw_unlock(inode, 1);
@@ -1799,7 +1828,7 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
* if we need to make modifications here.
*/
for(;;) {
ret = ocfs2_meta_lock(inode, NULL, meta_level);
ret = ocfs2_inode_lock(inode, NULL, meta_level);
if (ret < 0) {
meta_level = -1;
mlog_errno(ret);
@@ -1817,7 +1846,7 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
* set inode->i_size at the end of a write. */
if (should_remove_suid(dentry)) {
if (meta_level == 0) {
ocfs2_meta_unlock(inode, meta_level);
ocfs2_inode_unlock(inode, meta_level);
meta_level = 1;
continue;
}
@@ -1886,7 +1915,7 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
*ppos = saved_pos;
out_unlock:
ocfs2_meta_unlock(inode, meta_level);
ocfs2_inode_unlock(inode, meta_level);
out:
return ret;
@@ -2099,12 +2128,12 @@ static ssize_t ocfs2_file_splice_read(struct file *in,
/*
* See the comment in ocfs2_file_aio_read()
*/
ret = ocfs2_meta_lock(inode, NULL, 0);
ret = ocfs2_inode_lock(inode, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
ret = generic_file_splice_read(in, ppos, pipe, len, flags);
@@ -2160,12 +2189,12 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
* like i_size. This allows the checks down below
* generic_file_aio_read() a chance of actually working.
*/
ret = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level);
ret = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
if (ret < 0) {
mlog_errno(ret);
goto bail;
}
ocfs2_meta_unlock(inode, lock_level);
ocfs2_inode_unlock(inode, lock_level);
ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos);
if (ret == -EINVAL)
@@ -2204,6 +2233,7 @@ const struct inode_operations ocfs2_special_file_iops = {
};
const struct file_operations ocfs2_fops = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
.mmap = ocfs2_mmap,
@@ -2216,16 +2246,21 @@ const struct file_operations ocfs2_fops = {
#ifdef CONFIG_COMPAT
.compat_ioctl = ocfs2_compat_ioctl,
#endif
.flock = ocfs2_flock,
.splice_read = ocfs2_file_splice_read,
.splice_write = ocfs2_file_splice_write,
};
const struct file_operations ocfs2_dops = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = ocfs2_readdir,
.fsync = ocfs2_sync_file,
.release = ocfs2_dir_release,
.open = ocfs2_dir_open,
.ioctl = ocfs2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ocfs2_compat_ioctl,
#endif
.flock = ocfs2_flock,
};

6
fs/ocfs2/file.h
Bestand weergeven

@@ -32,6 +32,12 @@ extern const struct inode_operations ocfs2_file_iops;
extern const struct inode_operations ocfs2_special_file_iops;
struct ocfs2_alloc_context;
struct ocfs2_file_private {
struct file *fp_file;
struct mutex fp_mutex;
struct ocfs2_lock_res fp_flock;
};
enum ocfs2_alloc_restarted {
RESTART_NONE = 0,
RESTART_TRANS,

80
fs/ocfs2/heartbeat.c
Bestand weergeven

@@ -30,9 +30,6 @@
#include <linux/highmem.h>
#include <linux/kmod.h>
#include <cluster/heartbeat.h>
#include <cluster/nodemanager.h>
#include <dlm/dlmapi.h>
#define MLOG_MASK_PREFIX ML_SUPER
@@ -44,13 +41,9 @@
#include "heartbeat.h"
#include "inode.h"
#include "journal.h"
#include "vote.h"
#include "buffer_head_io.h"
#define OCFS2_HB_NODE_DOWN_PRI (0x0000002)
#define OCFS2_HB_NODE_UP_PRI OCFS2_HB_NODE_DOWN_PRI
static inline void __ocfs2_node_map_set_bit(struct ocfs2_node_map *map,
int bit);
static inline void __ocfs2_node_map_clear_bit(struct ocfs2_node_map *map,
@@ -64,9 +57,7 @@ static void __ocfs2_node_map_set(struct ocfs2_node_map *target,
void ocfs2_init_node_maps(struct ocfs2_super *osb)
{
spin_lock_init(&osb->node_map_lock);
ocfs2_node_map_init(&osb->mounted_map);
ocfs2_node_map_init(&osb->recovery_map);
ocfs2_node_map_init(&osb->umount_map);
ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
}
@@ -87,24 +78,7 @@ static void ocfs2_do_node_down(int node_num,
return;
}
if (ocfs2_node_map_test_bit(osb, &osb->umount_map, node_num)) {
/* If a node is in the umount map, then we've been
* expecting him to go down and we know ahead of time
* that recovery is not necessary. */
ocfs2_node_map_clear_bit(osb, &osb->umount_map, node_num);
return;
}
ocfs2_recovery_thread(osb, node_num);
ocfs2_remove_node_from_vote_queues(osb, node_num);
}
static void ocfs2_hb_node_down_cb(struct o2nm_node *node,
int node_num,
void *data)
{
ocfs2_do_node_down(node_num, (struct ocfs2_super *) data);
}
/* Called from the dlm when it's about to evict a node. We may also
@@ -121,27 +95,8 @@ static void ocfs2_dlm_eviction_cb(int node_num,
ocfs2_do_node_down(node_num, osb);
}
static void ocfs2_hb_node_up_cb(struct o2nm_node *node,
int node_num,
void *data)
{
struct ocfs2_super *osb = data;
BUG_ON(osb->node_num == node_num);
mlog(0, "node up event for %d\n", node_num);
ocfs2_node_map_clear_bit(osb, &osb->umount_map, node_num);
}
void ocfs2_setup_hb_callbacks(struct ocfs2_super *osb)
{
o2hb_setup_callback(&osb->osb_hb_down, O2HB_NODE_DOWN_CB,
ocfs2_hb_node_down_cb, osb,
OCFS2_HB_NODE_DOWN_PRI);
o2hb_setup_callback(&osb->osb_hb_up, O2HB_NODE_UP_CB,
ocfs2_hb_node_up_cb, osb, OCFS2_HB_NODE_UP_PRI);
/* Not exactly a heartbeat callback, but leads to essentially
* the same path so we set it up here. */
dlm_setup_eviction_cb(&osb->osb_eviction_cb,
@@ -149,39 +104,6 @@ void ocfs2_setup_hb_callbacks(struct ocfs2_super *osb)
osb);
}
/* Most functions here are just stubs for now... */
int ocfs2_register_hb_callbacks(struct ocfs2_super *osb)
{
int status;
if (ocfs2_mount_local(osb))
return 0;
status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_down);
if (status < 0) {
mlog_errno(status);
goto bail;
}
status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_up);
if (status < 0) {
mlog_errno(status);
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down);
}
bail:
return status;
}
void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb)
{
if (ocfs2_mount_local(osb))
return;
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down);
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_up);
}
void ocfs2_stop_heartbeat(struct ocfs2_super *osb)
{
int ret;
@@ -341,8 +263,6 @@ int ocfs2_recovery_map_set(struct ocfs2_super *osb,
spin_lock(&osb->node_map_lock);
__ocfs2_node_map_clear_bit(&osb->mounted_map, num);
if (!test_bit(num, osb->recovery_map.map)) {
__ocfs2_node_map_set_bit(&osb->recovery_map, num);
set = 1;

2
fs/ocfs2/heartbeat.h
Bestand weergeven

@@ -29,8 +29,6 @@
void ocfs2_init_node_maps(struct ocfs2_super *osb);
void ocfs2_setup_hb_callbacks(struct ocfs2_super *osb);
int ocfs2_register_hb_callbacks(struct ocfs2_super *osb);
void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb);
void ocfs2_stop_heartbeat(struct ocfs2_super *osb);
/* node map functions - used to keep track of mounted and in-recovery

84
fs/ocfs2/inode.c
Bestand weergeven

@@ -49,7 +49,6 @@
#include "symlink.h"
#include "sysfile.h"
#include "uptodate.h"
#include "vote.h"
#include "buffer_head_io.h"
@@ -58,8 +57,11 @@ struct ocfs2_find_inode_args
u64 fi_blkno;
unsigned long fi_ino;
unsigned int fi_flags;
unsigned int fi_sysfile_type;
};
static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES];
static int ocfs2_read_locked_inode(struct inode *inode,
struct ocfs2_find_inode_args *args);
static int ocfs2_init_locked_inode(struct inode *inode, void *opaque);
@@ -107,7 +109,8 @@ void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi)
oi->ip_attr |= OCFS2_DIRSYNC_FL;
}
struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags)
struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
int sysfile_type)
{
struct inode *inode = NULL;
struct super_block *sb = osb->sb;
@@ -127,6 +130,7 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags)
args.fi_blkno = blkno;
args.fi_flags = flags;
args.fi_ino = ino_from_blkno(sb, blkno);
args.fi_sysfile_type = sysfile_type;
inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
ocfs2_init_locked_inode, &args);
@@ -201,6 +205,9 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque)
inode->i_ino = args->fi_ino;
OCFS2_I(inode)->ip_blkno = args->fi_blkno;
if (args->fi_sysfile_type != 0)
lockdep_set_class(&inode->i_mutex,
&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
mlog_exit(0);
return 0;
@@ -322,7 +329,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
*/
BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL);
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
OCFS2_LOCK_TYPE_META, 0, inode);
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres,
@@ -333,10 +340,6 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
OCFS2_LOCK_TYPE_RW, inode->i_generation,
inode);
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres,
OCFS2_LOCK_TYPE_DATA, inode->i_generation,
inode);
ocfs2_set_inode_flags(inode);
status = 0;
@@ -414,7 +417,7 @@ static int ocfs2_read_locked_inode(struct inode *inode,
if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
generation = osb->fs_generation;
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres,
OCFS2_LOCK_TYPE_META,
generation, inode);
@@ -429,7 +432,7 @@ static int ocfs2_read_locked_inode(struct inode *inode,
mlog_errno(status);
return status;
}
status = ocfs2_meta_lock(inode, NULL, 0);
status = ocfs2_inode_lock(inode, NULL, 0);
if (status) {
make_bad_inode(inode);
mlog_errno(status);
@@ -484,7 +487,7 @@ static int ocfs2_read_locked_inode(struct inode *inode,
bail:
if (can_lock)
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
if (status < 0)
make_bad_inode(inode);
@@ -586,7 +589,7 @@ static int ocfs2_remove_inode(struct inode *inode,
}
mutex_lock(&inode_alloc_inode->i_mutex);
status = ocfs2_meta_lock(inode_alloc_inode, &inode_alloc_bh, 1);
status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1);
if (status < 0) {
mutex_unlock(&inode_alloc_inode->i_mutex);
@@ -617,7 +620,7 @@ static int ocfs2_remove_inode(struct inode *inode,
}
di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec);
le32_and_cpu(&di->i_flags, ~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL));
status = ocfs2_journal_dirty(handle, di_bh);
if (status < 0) {
@@ -635,7 +638,7 @@ static int ocfs2_remove_inode(struct inode *inode,
bail_commit:
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode_alloc_inode, 1);
ocfs2_inode_unlock(inode_alloc_inode, 1);
mutex_unlock(&inode_alloc_inode->i_mutex);
brelse(inode_alloc_bh);
bail:
@@ -709,7 +712,7 @@ static int ocfs2_wipe_inode(struct inode *inode,
* delete_inode operation. We do this now to avoid races with
* recovery completion on other nodes. */
mutex_lock(&orphan_dir_inode->i_mutex);
status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
if (status < 0) {
mutex_unlock(&orphan_dir_inode->i_mutex);
@@ -718,8 +721,8 @@ static int ocfs2_wipe_inode(struct inode *inode,
}
/* we do this while holding the orphan dir lock because we
* don't want recovery being run from another node to vote for
* an inode delete on us -- this will result in two nodes
* don't want recovery being run from another node to try an
* inode delete underneath us -- this will result in two nodes
* truncating the same file! */
status = ocfs2_truncate_for_delete(osb, inode, di_bh);
if (status < 0) {
@@ -733,7 +736,7 @@ static int ocfs2_wipe_inode(struct inode *inode,
mlog_errno(status);
bail_unlock_dir:
ocfs2_meta_unlock(orphan_dir_inode, 1);
ocfs2_inode_unlock(orphan_dir_inode, 1);
mutex_unlock(&orphan_dir_inode->i_mutex);
brelse(orphan_dir_bh);
bail:
@@ -744,7 +747,7 @@ bail:
}
/* There is a series of simple checks that should be done before a
* vote is even considered. Encapsulate those in this function. */
* trylock is even considered. Encapsulate those in this function. */
static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
{
int ret = 0;
@@ -758,14 +761,14 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
goto bail;
}
/* If we're coming from process_vote we can't go into our own
/* If we're coming from downconvert_thread we can't go into our own
* voting [hello, deadlock city!], so unforuntately we just
* have to skip deleting this guy. That's OK though because
* the node who's doing the actual deleting should handle it
* anyway. */
if (current == osb->vote_task) {
if (current == osb->dc_task) {
mlog(0, "Skipping delete of %lu because we're currently "
"in process_vote\n", inode->i_ino);
"in downconvert\n", inode->i_ino);
goto bail;
}
@@ -779,10 +782,9 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
goto bail_unlock;
}
/* If we have voted "yes" on the wipe of this inode for
* another node, it will be marked here so we can safely skip
* it. Recovery will cleanup any inodes we might inadvertantly
* skip here. */
/* If we have allowd wipe of this inode for another node, it
* will be marked here so we can safely skip it. Recovery will
* cleanup any inodes we might inadvertantly skip here. */
if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
mlog(0, "Skipping delete of %lu because another node "
"has done this for us.\n", inode->i_ino);
@@ -929,13 +931,13 @@ void ocfs2_delete_inode(struct inode *inode)
/* Lock down the inode. This gives us an up to date view of
* it's metadata (for verification), and allows us to
* serialize delete_inode votes.
* serialize delete_inode on multiple nodes.
*
* Even though we might be doing a truncate, we don't take the
* allocation lock here as it won't be needed - nobody will
* have the file open.
*/
status = ocfs2_meta_lock(inode, &di_bh, 1);
status = ocfs2_inode_lock(inode, &di_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -947,15 +949,15 @@ void ocfs2_delete_inode(struct inode *inode)
* before we go ahead and wipe the inode. */
status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
if (!wipe || status < 0) {
/* Error and inode busy vote both mean we won't be
/* Error and remote inode busy both mean we won't be
* removing the inode, so they take almost the same
* path. */
if (status < 0)
mlog_errno(status);
/* Someone in the cluster has voted to not wipe this
* inode, or it was never completely orphaned. Write
* out the pages and exit now. */
/* Someone in the cluster has disallowed a wipe of
* this inode, or it was never completely
* orphaned. Write out the pages and exit now. */
ocfs2_cleanup_delete_inode(inode, 1);
goto bail_unlock_inode;
}
@@ -981,7 +983,7 @@ void ocfs2_delete_inode(struct inode *inode)
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
bail_unlock_inode:
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
bail_unblock:
status = sigprocmask(SIG_SETMASK, &oldset, NULL);
@@ -1008,15 +1010,14 @@ void ocfs2_clear_inode(struct inode *inode)
mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
"Inode=%lu\n", inode->i_ino);
/* For remove delete_inode vote, we hold open lock before,
* now it is time to unlock PR and EX open locks. */
/* To preven remote deletes we hold open lock before, now it
* is time to unlock PR and EX open locks. */
ocfs2_open_unlock(inode);
/* Do these before all the other work so that we don't bounce
* the vote thread while waiting to destroy the locks. */
* the downconvert thread while waiting to destroy the locks. */
ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres);
ocfs2_mark_lockres_freeing(&oi->ip_data_lockres);
ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres);
ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
/* We very well may get a clear_inode before all an inodes
@@ -1039,8 +1040,7 @@ void ocfs2_clear_inode(struct inode *inode)
mlog_errno(status);
ocfs2_lock_res_free(&oi->ip_rw_lockres);
ocfs2_lock_res_free(&oi->ip_meta_lockres);
ocfs2_lock_res_free(&oi->ip_data_lockres);
ocfs2_lock_res_free(&oi->ip_inode_lockres);
ocfs2_lock_res_free(&oi->ip_open_lockres);
ocfs2_metadata_cache_purge(inode);
@@ -1184,15 +1184,15 @@ int ocfs2_inode_revalidate(struct dentry *dentry)
}
spin_unlock(&OCFS2_I(inode)->ip_lock);
/* Let ocfs2_meta_lock do the work of updating our struct
/* Let ocfs2_inode_lock do the work of updating our struct
* inode for us. */
status = ocfs2_meta_lock(inode, NULL, 0);
status = ocfs2_inode_lock(inode, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
goto bail;
}
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
bail:
mlog_exit(status);

10
fs/ocfs2/inode.h
Bestand weergeven

@@ -34,8 +34,7 @@ struct ocfs2_inode_info
u64 ip_blkno;
struct ocfs2_lock_res ip_rw_lockres;
struct ocfs2_lock_res ip_meta_lockres;
struct ocfs2_lock_res ip_data_lockres;
struct ocfs2_lock_res ip_inode_lockres;
struct ocfs2_lock_res ip_open_lockres;
/* protects allocation changes on this inode. */
@@ -121,9 +120,10 @@ void ocfs2_delete_inode(struct inode *inode);
void ocfs2_drop_inode(struct inode *inode);
/* Flags for ocfs2_iget() */
#define OCFS2_FI_FLAG_SYSFILE 0x4
#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x8
struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, int flags);
#define OCFS2_FI_FLAG_SYSFILE 0x1
#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
int sysfile_type);
int ocfs2_inode_init_private(struct inode *inode);
int ocfs2_inode_revalidate(struct dentry *dentry);
int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,

31
fs/ocfs2/ioctl.c
Bestand weergeven

@@ -20,6 +20,7 @@
#include "ocfs2_fs.h"
#include "ioctl.h"
#include "resize.h"
#include <linux/ext2_fs.h>
@@ -27,14 +28,14 @@ static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
{
int status;
status = ocfs2_meta_lock(inode, NULL, 0);
status = ocfs2_inode_lock(inode, NULL, 0);
if (status < 0) {
mlog_errno(status);
return status;
}
ocfs2_get_inode_flags(OCFS2_I(inode));
*flags = OCFS2_I(inode)->ip_attr;
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
mlog_exit(status);
return status;
@@ -52,7 +53,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
mutex_lock(&inode->i_mutex);
status = ocfs2_meta_lock(inode, &bh, 1);
status = ocfs2_inode_lock(inode, &bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -100,7 +101,7 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
bail:
mutex_unlock(&inode->i_mutex);
@@ -115,8 +116,10 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg)
{
unsigned int flags;
int new_clusters;
int status;
struct ocfs2_space_resv sr;
struct ocfs2_new_group_input input;
switch (cmd) {
case OCFS2_IOC_GETFLAGS:
@@ -140,6 +143,23 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
return -EFAULT;
return ocfs2_change_file_space(filp, cmd, &sr);
case OCFS2_IOC_GROUP_EXTEND:
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
if (get_user(new_clusters, (int __user *)arg))
return -EFAULT;
return ocfs2_group_extend(inode, new_clusters);
case OCFS2_IOC_GROUP_ADD:
case OCFS2_IOC_GROUP_ADD64:
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
if (copy_from_user(&input, (int __user *) arg, sizeof(input)))
return -EFAULT;
return ocfs2_group_add(inode, &input);
default:
return -ENOTTY;
}
@@ -162,6 +182,9 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case OCFS2_IOC_RESVSP64:
case OCFS2_IOC_UNRESVSP:
case OCFS2_IOC_UNRESVSP64:
case OCFS2_IOC_GROUP_EXTEND:
case OCFS2_IOC_GROUP_ADD:
case OCFS2_IOC_GROUP_ADD64:
break;
default:
return -ENOIOCTLCMD;

51
fs/ocfs2/journal.c
Bestand weergeven

@@ -44,7 +44,6 @@
#include "localalloc.h"
#include "slot_map.h"
#include "super.h"
#include "vote.h"
#include "sysfile.h"
#include "buffer_head_io.h"
@@ -103,7 +102,7 @@ static int ocfs2_commit_cache(struct ocfs2_super *osb)
mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n",
journal->j_trans_id, flushed);
ocfs2_kick_vote_thread(osb);
ocfs2_wake_downconvert_thread(osb);
wake_up(&journal->j_checkpointed);
finally:
mlog_exit(status);
@@ -314,14 +313,18 @@ int ocfs2_journal_dirty_data(handle_t *handle,
return err;
}
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * 5)
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD_DEFAULT_MAX_COMMIT_AGE)
void ocfs2_set_journal_params(struct ocfs2_super *osb)
{
journal_t *journal = osb->journal->j_journal;
unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
if (osb->osb_commit_interval)
commit_interval = osb->osb_commit_interval;
spin_lock(&journal->j_state_lock);
journal->j_commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
journal->j_commit_interval = commit_interval;
if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
journal->j_flags |= JFS_BARRIER;
else
@@ -337,7 +340,7 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
struct ocfs2_dinode *di = NULL;
struct buffer_head *bh = NULL;
struct ocfs2_super *osb;
int meta_lock = 0;
int inode_lock = 0;
mlog_entry_void();
@@ -367,14 +370,14 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
/* Skip recovery waits here - journal inode metadata never
* changes in a live cluster so it can be considered an
* exception to the rule. */
status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
if (status != -ERESTARTSYS)
mlog(ML_ERROR, "Could not get lock on journal!\n");
goto done;
}
meta_lock = 1;
inode_lock = 1;
di = (struct ocfs2_dinode *)bh->b_data;
if (inode->i_size < OCFS2_MIN_JOURNAL_SIZE) {
@@ -414,8 +417,8 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
status = 0;
done:
if (status < 0) {
if (meta_lock)
ocfs2_meta_unlock(inode, 1);
if (inode_lock)
ocfs2_inode_unlock(inode, 1);
if (bh != NULL)
brelse(bh);
if (inode) {
@@ -544,7 +547,7 @@ void ocfs2_journal_shutdown(struct ocfs2_super *osb)
OCFS2_I(inode)->ip_open_count--;
/* unlock our journal */
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
brelse(journal->j_bh);
journal->j_bh = NULL;
@@ -883,8 +886,8 @@ restart:
ocfs2_super_unlock(osb, 1);
/* We always run recovery on our own orphan dir - the dead
* node(s) may have voted "no" on an inode delete earlier. A
* revote is therefore required. */
* node(s) may have disallowd a previos inode delete. Re-processing
* is therefore required. */
ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
NULL);
@@ -973,9 +976,9 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
}
SET_INODE_JOURNAL(inode);
status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
if (status < 0) {
mlog(0, "status returned from ocfs2_meta_lock=%d\n", status);
mlog(0, "status returned from ocfs2_inode_lock=%d\n", status);
if (status != -ERESTARTSYS)
mlog(ML_ERROR, "Could not lock journal!\n");
goto done;
@@ -1047,7 +1050,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb,
done:
/* drop the lock on this nodes journal */
if (got_lock)
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
if (inode)
iput(inode);
@@ -1162,14 +1165,14 @@ static int ocfs2_trylock_journal(struct ocfs2_super *osb,
SET_INODE_JOURNAL(inode);
flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
status = ocfs2_meta_lock_full(inode, NULL, 1, flags);
status = ocfs2_inode_lock_full(inode, NULL, 1, flags);
if (status < 0) {
if (status != -EAGAIN)
mlog_errno(status);
goto bail;
}
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
bail:
if (inode)
iput(inode);
@@ -1241,7 +1244,7 @@ static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len,
/* Skip bad inodes so that recovery can continue */
iter = ocfs2_iget(p->osb, ino,
OCFS2_FI_FLAG_ORPHAN_RECOVERY);
OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0);
if (IS_ERR(iter))
return 0;
@@ -1277,7 +1280,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
}
mutex_lock(&orphan_dir_inode->i_mutex);
status = ocfs2_meta_lock(orphan_dir_inode, NULL, 0);
status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0);
if (status < 0) {
mlog_errno(status);
goto out;
@@ -1293,7 +1296,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
*head = priv.head;
out_cluster:
ocfs2_meta_unlock(orphan_dir_inode, 0);
ocfs2_inode_unlock(orphan_dir_inode, 0);
out:
mutex_unlock(&orphan_dir_inode->i_mutex);
iput(orphan_dir_inode);
@@ -1380,10 +1383,10 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
iter = oi->ip_next_orphan;
spin_lock(&oi->ip_lock);
/* Delete voting may have set these on the assumption
* that the other node would wipe them successfully.
* If they are still in the node's orphan dir, we need
* to reset that state. */
/* The remote delete code may have set these on the
* assumption that the other node would wipe them
* successfully. If they are still in the node's
* orphan dir, we need to reset that state. */
oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE);
/* Set the proper information to get us going into

6
fs/ocfs2/journal.h
Bestand weergeven

@@ -278,6 +278,12 @@ int ocfs2_journal_dirty_data(handle_t *handle,
/* simple file updates like chmod, etc. */
#define OCFS2_INODE_UPDATE_CREDITS 1
/* group extend. inode update and last group update. */
#define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
/* group add. inode update and the new group update. */
#define OCFS2_GROUP_ADD_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
/* get one bit out of a suballocator: dinode + group descriptor +
* prev. group desc. if we relink. */
#define OCFS2_SUBALLOC_ALLOC (3)

50
fs/ocfs2/localalloc.c
Bestand weergeven

@@ -75,18 +75,12 @@ static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
struct inode *local_alloc_inode);
/*
* Determine how large our local alloc window should be, in bits.
*
* These values (and the behavior in ocfs2_alloc_should_use_local) have
* been chosen so that most allocations, including new block groups go
* through local alloc.
*/
static inline int ocfs2_local_alloc_window_bits(struct ocfs2_super *osb)
{
BUG_ON(osb->s_clustersize_bits < 12);
BUG_ON(osb->s_clustersize_bits > 20);
return 2048 >> (osb->s_clustersize_bits - 12);
/* Size local alloc windows by the megabyte */
return osb->local_alloc_size << (20 - osb->s_clustersize_bits);
}
/*
@@ -96,18 +90,23 @@ static inline int ocfs2_local_alloc_window_bits(struct ocfs2_super *osb)
int ocfs2_alloc_should_use_local(struct ocfs2_super *osb, u64 bits)
{
int la_bits = ocfs2_local_alloc_window_bits(osb);
int ret = 0;
if (osb->local_alloc_state != OCFS2_LA_ENABLED)
return 0;
goto bail;
/* la_bits should be at least twice the size (in clusters) of
* a new block group. We want to be sure block group
* allocations go through the local alloc, so allow an
* allocation to take up to half the bitmap. */
if (bits > (la_bits / 2))
return 0;
goto bail;
return 1;
ret = 1;
bail:
mlog(0, "state=%d, bits=%llu, la_bits=%d, ret=%d\n",
osb->local_alloc_state, (unsigned long long)bits, la_bits, ret);
return ret;
}
int ocfs2_load_local_alloc(struct ocfs2_super *osb)
@@ -121,6 +120,19 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
mlog_entry_void();
if (ocfs2_mount_local(osb))
goto bail;
if (osb->local_alloc_size == 0)
goto bail;
if (ocfs2_local_alloc_window_bits(osb) >= osb->bitmap_cpg) {
mlog(ML_NOTICE, "Requested local alloc window %d is larger "
"than max possible %u. Using defaults.\n",
ocfs2_local_alloc_window_bits(osb), (osb->bitmap_cpg - 1));
osb->local_alloc_size = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE;
}
/* read the alloc off disk */
inode = ocfs2_get_system_file_inode(osb, LOCAL_ALLOC_SYSTEM_INODE,
osb->slot_num);
@@ -181,6 +193,9 @@ bail:
if (inode)
iput(inode);
mlog(0, "Local alloc window bits = %d\n",
ocfs2_local_alloc_window_bits(osb));
mlog_exit(status);
return status;
}
@@ -231,7 +246,7 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
mutex_lock(&main_bm_inode->i_mutex);
status = ocfs2_meta_lock(main_bm_inode, &main_bm_bh, 1);
status = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
if (status < 0) {
mlog_errno(status);
goto out_mutex;
@@ -286,7 +301,7 @@ out_unlock:
if (main_bm_bh)
brelse(main_bm_bh);
ocfs2_meta_unlock(main_bm_inode, 1);
ocfs2_inode_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
@@ -399,7 +414,7 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
mutex_lock(&main_bm_inode->i_mutex);
status = ocfs2_meta_lock(main_bm_inode, &main_bm_bh, 1);
status = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
if (status < 0) {
mlog_errno(status);
goto out_mutex;
@@ -424,7 +439,7 @@ int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
ocfs2_commit_trans(osb, handle);
out_unlock:
ocfs2_meta_unlock(main_bm_inode, 1);
ocfs2_inode_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
@@ -521,6 +536,9 @@ bail:
iput(local_alloc_inode);
}
mlog(0, "bits=%d, slot=%d, ret=%d\n", bits_wanted, osb->slot_num,
status);
mlog_exit(status);
return status;
}

125
fs/ocfs2/locks.c Normal file
Bestand weergeven

@@ -0,0 +1,125 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* locks.c
*
* Userspace file locking support
*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <linux/fs.h>
#define MLOG_MASK_PREFIX ML_INODE
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "dlmglue.h"
#include "file.h"
#include "locks.h"
static int ocfs2_do_flock(struct file *file, struct inode *inode,
int cmd, struct file_lock *fl)
{
int ret = 0, level = 0, trylock = 0;
struct ocfs2_file_private *fp = file->private_data;
struct ocfs2_lock_res *lockres = &fp->fp_flock;
if (fl->fl_type == F_WRLCK)
level = 1;
if (!IS_SETLKW(cmd))
trylock = 1;
mutex_lock(&fp->fp_mutex);
if (lockres->l_flags & OCFS2_LOCK_ATTACHED &&
lockres->l_level > LKM_NLMODE) {
int old_level = 0;
if (lockres->l_level == LKM_EXMODE)
old_level = 1;
if (level == old_level)
goto out;
/*
* Converting an existing lock is not guaranteed to be
* atomic, so we can get away with simply unlocking
* here and allowing the lock code to try at the new
* level.
*/
flock_lock_file_wait(file,
&(struct file_lock){.fl_type = F_UNLCK});
ocfs2_file_unlock(file);
}
ret = ocfs2_file_lock(file, level, trylock);
if (ret) {
if (ret == -EAGAIN && trylock)
ret = -EWOULDBLOCK;
else
mlog_errno(ret);
goto out;
}
ret = flock_lock_file_wait(file, fl);
out:
mutex_unlock(&fp->fp_mutex);
return ret;
}
static int ocfs2_do_funlock(struct file *file, int cmd, struct file_lock *fl)
{
int ret;
struct ocfs2_file_private *fp = file->private_data;
mutex_lock(&fp->fp_mutex);
ocfs2_file_unlock(file);
ret = flock_lock_file_wait(file, fl);
mutex_unlock(&fp->fp_mutex);
return ret;
}
/*
* Overall flow of ocfs2_flock() was influenced by gfs2_flock().
*/
int ocfs2_flock(struct file *file, int cmd, struct file_lock *fl)
{
struct inode *inode = file->f_mapping->host;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
if (!(fl->fl_flags & FL_FLOCK))
return -ENOLCK;
if (__mandatory_lock(inode))
return -ENOLCK;
if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) ||
ocfs2_mount_local(osb))
return flock_lock_file_wait(file, fl);
if (fl->fl_type == F_UNLCK)
return ocfs2_do_funlock(file, cmd, fl);
else
return ocfs2_do_flock(file, inode, cmd, fl);
}

29
fs/ocfs2/vote.h → fs/ocfs2/locks.h
Bestand weergeven

@@ -1,9 +1,9 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* vote.h
* locks.h
*
* description here
* Function prototypes for Userspace file locking support
*
* Copyright (C) 2002, 2004 Oracle. All rights reserved.
*
@@ -23,26 +23,9 @@
* Boston, MA 021110-1307, USA.
*/
#ifndef OCFS2_LOCKS_H
#define OCFS2_LOCKS_H
#ifndef VOTE_H
#define VOTE_H
int ocfs2_flock(struct file *file, int cmd, struct file_lock *fl);
int ocfs2_vote_thread(void *arg);
static inline void ocfs2_kick_vote_thread(struct ocfs2_super *osb)
{
spin_lock(&osb->vote_task_lock);
/* make sure the voting thread gets a swipe at whatever changes
* the caller may have made to the voting state */
osb->vote_wake_sequence++;
spin_unlock(&osb->vote_task_lock);
wake_up(&osb->vote_event);
}
int ocfs2_request_mount_vote(struct ocfs2_super *osb);
int ocfs2_request_umount_vote(struct ocfs2_super *osb);
int ocfs2_register_net_handlers(struct ocfs2_super *osb);
void ocfs2_unregister_net_handlers(struct ocfs2_super *osb);
void ocfs2_remove_node_from_vote_queues(struct ocfs2_super *osb,
int node_num);
#endif
#endif /* OCFS2_LOCKS_H */

17
fs/ocfs2/mmap.c
Bestand weergeven

@@ -168,7 +168,7 @@ static int ocfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
* node. Taking the data lock will also ensure that we don't
* attempt page truncation as part of a downconvert.
*/
ret = ocfs2_meta_lock(inode, &di_bh, 1);
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -181,21 +181,12 @@ static int ocfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
*/
down_write(&OCFS2_I(inode)->ip_alloc_sem);
ret = ocfs2_data_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto out_meta_unlock;
}
ret = __ocfs2_page_mkwrite(inode, di_bh, page);
ocfs2_data_unlock(inode, 1);
out_meta_unlock:
up_write(&OCFS2_I(inode)->ip_alloc_sem);
brelse(di_bh);
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
out:
ret2 = ocfs2_vm_op_unblock_sigs(&oldset);
@@ -214,13 +205,13 @@ int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)
{
int ret = 0, lock_level = 0;
ret = ocfs2_meta_lock_atime(file->f_dentry->d_inode,
ret = ocfs2_inode_lock_atime(file->f_dentry->d_inode,
file->f_vfsmnt, &lock_level);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ocfs2_meta_unlock(file->f_dentry->d_inode, lock_level);
ocfs2_inode_unlock(file->f_dentry->d_inode, lock_level);
out:
vma->vm_ops = &ocfs2_file_vm_ops;
vma->vm_flags |= VM_CAN_NONLINEAR;

66
fs/ocfs2/namei.c
Bestand weergeven

@@ -60,7 +60,6 @@
#include "symlink.h"
#include "sysfile.h"
#include "uptodate.h"
#include "vote.h"
#include "buffer_head_io.h"
@@ -116,7 +115,7 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
status = ocfs2_meta_lock(dir, NULL, 0);
status = ocfs2_inode_lock(dir, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -129,7 +128,7 @@ static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
if (status < 0)
goto bail_add;
inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0);
inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
if (IS_ERR(inode)) {
ret = ERR_PTR(-EACCES);
goto bail_unlock;
@@ -176,8 +175,8 @@ bail_unlock:
/* Don't drop the cluster lock until *after* the d_add --
* unlink on another node will message us to remove that
* dentry under this lock so otherwise we can race this with
* the vote thread and have a stale dentry. */
ocfs2_meta_unlock(dir, 0);
* the downconvert thread and have a stale dentry. */
ocfs2_inode_unlock(dir, 0);
bail:
@@ -209,7 +208,7 @@ static int ocfs2_mknod(struct inode *dir,
/* get our super block */
osb = OCFS2_SB(dir->i_sb);
status = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -323,7 +322,7 @@ leave:
if (handle)
ocfs2_commit_trans(osb, handle);
ocfs2_meta_unlock(dir, 1);
ocfs2_inode_unlock(dir, 1);
if (status == -ENOSPC)
mlog(0, "Disk is full\n");
@@ -553,7 +552,7 @@ static int ocfs2_link(struct dentry *old_dentry,
if (S_ISDIR(inode->i_mode))
return -EPERM;
err = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
err = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (err < 0) {
if (err != -ENOENT)
mlog_errno(err);
@@ -578,7 +577,7 @@ static int ocfs2_link(struct dentry *old_dentry,
goto out;
}
err = ocfs2_meta_lock(inode, &fe_bh, 1);
err = ocfs2_inode_lock(inode, &fe_bh, 1);
if (err < 0) {
if (err != -ENOENT)
mlog_errno(err);
@@ -643,10 +642,10 @@ static int ocfs2_link(struct dentry *old_dentry,
out_commit:
ocfs2_commit_trans(osb, handle);
out_unlock_inode:
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
out:
ocfs2_meta_unlock(dir, 1);
ocfs2_inode_unlock(dir, 1);
if (de_bh)
brelse(de_bh);
@@ -720,7 +719,7 @@ static int ocfs2_unlink(struct inode *dir,
return -EPERM;
}
status = ocfs2_meta_lock(dir, &parent_node_bh, 1);
status = ocfs2_inode_lock(dir, &parent_node_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -745,7 +744,7 @@ static int ocfs2_unlink(struct inode *dir,
goto leave;
}
status = ocfs2_meta_lock(inode, &fe_bh, 1);
status = ocfs2_inode_lock(inode, &fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -765,7 +764,7 @@ static int ocfs2_unlink(struct inode *dir,
status = ocfs2_remote_dentry_delete(dentry);
if (status < 0) {
/* This vote should succeed under all normal
/* This remote delete should succeed under all normal
* circumstances. */
mlog_errno(status);
goto leave;
@@ -841,13 +840,13 @@ leave:
ocfs2_commit_trans(osb, handle);
if (child_locked)
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
ocfs2_meta_unlock(dir, 1);
ocfs2_inode_unlock(dir, 1);
if (orphan_dir) {
/* This was locked for us in ocfs2_prepare_orphan_dir() */
ocfs2_meta_unlock(orphan_dir, 1);
ocfs2_inode_unlock(orphan_dir, 1);
mutex_unlock(&orphan_dir->i_mutex);
iput(orphan_dir);
}
@@ -908,7 +907,7 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
inode1 = tmpinode;
}
/* lock id2 */
status = ocfs2_meta_lock(inode2, bh2, 1);
status = ocfs2_inode_lock(inode2, bh2, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -917,14 +916,14 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
}
/* lock id1 */
status = ocfs2_meta_lock(inode1, bh1, 1);
status = ocfs2_inode_lock(inode1, bh1, 1);
if (status < 0) {
/*
* An error return must mean that no cluster locks
* were held on function exit.
*/
if (oi1->ip_blkno != oi2->ip_blkno)
ocfs2_meta_unlock(inode2, 1);
ocfs2_inode_unlock(inode2, 1);
if (status != -ENOENT)
mlog_errno(status);
@@ -937,10 +936,10 @@ bail:
static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
{
ocfs2_meta_unlock(inode1, 1);
ocfs2_inode_unlock(inode1, 1);
if (inode1 != inode2)
ocfs2_meta_unlock(inode2, 1);
ocfs2_inode_unlock(inode2, 1);
}
static int ocfs2_rename(struct inode *old_dir,
@@ -1031,10 +1030,11 @@ static int ocfs2_rename(struct inode *old_dir,
/*
* Aside from allowing a meta data update, the locking here
* also ensures that the vote thread on other nodes won't have
* to concurrently downconvert the inode and the dentry locks.
* also ensures that the downconvert thread on other nodes
* won't have to concurrently downconvert the inode and the
* dentry locks.
*/
status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1);
status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1143,7 +1143,7 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
status = ocfs2_meta_lock(new_inode, &newfe_bh, 1);
status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1355,14 +1355,14 @@ bail:
ocfs2_double_unlock(old_dir, new_dir);
if (old_child_locked)
ocfs2_meta_unlock(old_inode, 1);
ocfs2_inode_unlock(old_inode, 1);
if (new_child_locked)
ocfs2_meta_unlock(new_inode, 1);
ocfs2_inode_unlock(new_inode, 1);
if (orphan_dir) {
/* This was locked for us in ocfs2_prepare_orphan_dir() */
ocfs2_meta_unlock(orphan_dir, 1);
ocfs2_inode_unlock(orphan_dir, 1);
mutex_unlock(&orphan_dir->i_mutex);
iput(orphan_dir);
}
@@ -1530,7 +1530,7 @@ static int ocfs2_symlink(struct inode *dir,
credits = ocfs2_calc_symlink_credits(sb);
/* lock the parent directory */
status = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1657,7 +1657,7 @@ bail:
if (handle)
ocfs2_commit_trans(osb, handle);
ocfs2_meta_unlock(dir, 1);
ocfs2_inode_unlock(dir, 1);
if (new_fe_bh)
brelse(new_fe_bh);
@@ -1735,7 +1735,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
mutex_lock(&orphan_dir_inode->i_mutex);
status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -1745,7 +1745,7 @@ static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
orphan_dir_bh, name,
OCFS2_ORPHAN_NAMELEN, de_bh);
if (status < 0) {
ocfs2_meta_unlock(orphan_dir_inode, 1);
ocfs2_inode_unlock(orphan_dir_inode, 1);
mlog_errno(status);
goto leave;

35
fs/ocfs2/ocfs2.h
Bestand weergeven

@@ -101,6 +101,7 @@ enum ocfs2_unlock_action {
* about to be
* dropped. */
#define OCFS2_LOCK_QUEUED (0x00000100) /* queued for downconvert */
#define OCFS2_LOCK_NOCACHE (0x00000200) /* don't use a holder count */
struct ocfs2_lock_res_ops;
@@ -170,6 +171,7 @@ enum ocfs2_mount_options
OCFS2_MOUNT_NOINTR = 1 << 2, /* Don't catch signals */
OCFS2_MOUNT_ERRORS_PANIC = 1 << 3, /* Panic on errors */
OCFS2_MOUNT_DATA_WRITEBACK = 1 << 4, /* No data ordering */
OCFS2_MOUNT_LOCALFLOCKS = 1 << 5, /* No cluster aware user file locks */
};
#define OCFS2_OSB_SOFT_RO 0x0001
@@ -189,9 +191,7 @@ struct ocfs2_super
struct ocfs2_slot_info *slot_info;
spinlock_t node_map_lock;
struct ocfs2_node_map mounted_map;
struct ocfs2_node_map recovery_map;
struct ocfs2_node_map umount_map;
u64 root_blkno;
u64 system_dir_blkno;
@@ -231,7 +231,9 @@ struct ocfs2_super
wait_queue_head_t checkpoint_event;
atomic_t needs_checkpoint;
struct ocfs2_journal *journal;
unsigned long osb_commit_interval;
int local_alloc_size;
enum ocfs2_local_alloc_state local_alloc_state;
struct buffer_head *local_alloc_bh;
u64 la_last_gd;
@@ -254,28 +256,21 @@ struct ocfs2_super
wait_queue_head_t recovery_event;
spinlock_t vote_task_lock;
struct task_struct *vote_task;
wait_queue_head_t vote_event;
unsigned long vote_wake_sequence;
unsigned long vote_work_sequence;
spinlock_t dc_task_lock;
struct task_struct *dc_task;
wait_queue_head_t dc_event;
unsigned long dc_wake_sequence;
unsigned long dc_work_sequence;
/*
* Any thread can add locks to the list, but the downconvert
* thread is the only one allowed to remove locks. Any change
* to this rule requires updating
* ocfs2_downconvert_thread_do_work().
*/
struct list_head blocked_lock_list;
unsigned long blocked_lock_count;
struct list_head vote_list;
int vote_count;
u32 net_key;
spinlock_t net_response_lock;
unsigned int net_response_ids;
struct list_head net_response_list;
struct o2hb_callback_func osb_hb_up;
struct o2hb_callback_func osb_hb_down;
struct list_head osb_net_handlers;
wait_queue_head_t osb_mount_event;
/* Truncate log info */

22
fs/ocfs2/ocfs2_fs.h
Bestand weergeven

@@ -231,6 +231,20 @@ struct ocfs2_space_resv {
#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
/* Used to pass group descriptor data when online resize is done */
struct ocfs2_new_group_input {
__u64 group; /* Group descriptor's blkno. */
__u32 clusters; /* Total number of clusters in this group */
__u32 frees; /* Total free clusters in this group */
__u16 chain; /* Chain for this group */
__u16 reserved1;
__u32 reserved2;
};
#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
/*
* Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
*/
@@ -256,6 +270,14 @@ struct ocfs2_space_resv {
/* Journal limits (in bytes) */
#define OCFS2_MIN_JOURNAL_SIZE (4 * 1024 * 1024)
/*
* Default local alloc size (in megabytes)
*
* The value chosen should be such that most allocations, including new
* block groups, use local alloc.
*/
#define OCFS2_DEFAULT_LOCAL_ALLOC_SIZE 8
struct ocfs2_system_inode_info {
char *si_name;
int si_iflags;

5
fs/ocfs2/ocfs2_lockid.h
Bestand weergeven

@@ -45,6 +45,7 @@ enum ocfs2_lock_type {
OCFS2_LOCK_TYPE_RW,
OCFS2_LOCK_TYPE_DENTRY,
OCFS2_LOCK_TYPE_OPEN,
OCFS2_LOCK_TYPE_FLOCK,
OCFS2_NUM_LOCK_TYPES
};
@@ -73,6 +74,9 @@ static inline char ocfs2_lock_type_char(enum ocfs2_lock_type type)
case OCFS2_LOCK_TYPE_OPEN:
c = 'O';
break;
case OCFS2_LOCK_TYPE_FLOCK:
c = 'F';
break;
default:
c = '\0';
}
@@ -90,6 +94,7 @@ static char *ocfs2_lock_type_strings[] = {
[OCFS2_LOCK_TYPE_RW] = "Write/Read",
[OCFS2_LOCK_TYPE_DENTRY] = "Dentry",
[OCFS2_LOCK_TYPE_OPEN] = "Open",
[OCFS2_LOCK_TYPE_FLOCK] = "Flock",
};
static inline const char *ocfs2_lock_type_string(enum ocfs2_lock_type type)

634
fs/ocfs2/resize.c Normal file
Bestand weergeven

@@ -0,0 +1,634 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* resize.c
*
* volume resize.
* Inspired by ext3/resize.c.
*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <linux/fs.h>
#include <linux/types.h>
#define MLOG_MASK_PREFIX ML_DISK_ALLOC
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
#include "inode.h"
#include "journal.h"
#include "super.h"
#include "sysfile.h"
#include "uptodate.h"
#include "buffer_head_io.h"
#include "suballoc.h"
#include "resize.h"
/*
* Check whether there are new backup superblocks exist
* in the last group. If there are some, mark them or clear
* them in the bitmap.
*
* Return how many backups we find in the last group.
*/
static u16 ocfs2_calc_new_backup_super(struct inode *inode,
struct ocfs2_group_desc *gd,
int new_clusters,
u32 first_new_cluster,
u16 cl_cpg,
int set)
{
int i;
u16 backups = 0;
u32 cluster;
u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno);
for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
gd_blkno = ocfs2_which_cluster_group(inode, cluster);
if (gd_blkno < lgd_blkno)
continue;
else if (gd_blkno > lgd_blkno)
break;
if (set)
ocfs2_set_bit(cluster % cl_cpg,
(unsigned long *)gd->bg_bitmap);
else
ocfs2_clear_bit(cluster % cl_cpg,
(unsigned long *)gd->bg_bitmap);
backups++;
}
mlog_exit_void();
return backups;
}
static int ocfs2_update_last_group_and_inode(handle_t *handle,
struct inode *bm_inode,
struct buffer_head *bm_bh,
struct buffer_head *group_bh,
u32 first_new_cluster,
int new_clusters)
{
int ret = 0;
struct ocfs2_super *osb = OCFS2_SB(bm_inode->i_sb);
struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bm_bh->b_data;
struct ocfs2_chain_list *cl = &fe->id2.i_chain;
struct ocfs2_chain_rec *cr;
struct ocfs2_group_desc *group;
u16 chain, num_bits, backups = 0;
u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
mlog_entry("(new_clusters=%d, first_new_cluster = %u)\n",
new_clusters, first_new_cluster);
ret = ocfs2_journal_access(handle, bm_inode, group_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
group = (struct ocfs2_group_desc *)group_bh->b_data;
/* update the group first. */
num_bits = new_clusters * cl_bpc;
le16_add_cpu(&group->bg_bits, num_bits);
le16_add_cpu(&group->bg_free_bits_count, num_bits);
/*
* check whether there are some new backup superblocks exist in
* this group and update the group bitmap accordingly.
*/
if (OCFS2_HAS_COMPAT_FEATURE(osb->sb,
OCFS2_FEATURE_COMPAT_BACKUP_SB)) {
backups = ocfs2_calc_new_backup_super(bm_inode,
group,
new_clusters,
first_new_cluster,
cl_cpg, 1);
le16_add_cpu(&group->bg_free_bits_count, -1 * backups);
}
ret = ocfs2_journal_dirty(handle, group_bh);
if (ret < 0) {
mlog_errno(ret);
goto out_rollback;
}
/* update the inode accordingly. */
ret = ocfs2_journal_access(handle, bm_inode, bm_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_rollback;
}
chain = le16_to_cpu(group->bg_chain);
cr = (&cl->cl_recs[chain]);
le32_add_cpu(&cr->c_total, num_bits);
le32_add_cpu(&cr->c_free, num_bits);
le32_add_cpu(&fe->id1.bitmap1.i_total, num_bits);
le32_add_cpu(&fe->i_clusters, new_clusters);
if (backups) {
le32_add_cpu(&cr->c_free, -1 * backups);
le32_add_cpu(&fe->id1.bitmap1.i_used, backups);
}
spin_lock(&OCFS2_I(bm_inode)->ip_lock);
OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
le64_add_cpu(&fe->i_size, new_clusters << osb->s_clustersize_bits);
spin_unlock(&OCFS2_I(bm_inode)->ip_lock);
i_size_write(bm_inode, le64_to_cpu(fe->i_size));
ocfs2_journal_dirty(handle, bm_bh);
out_rollback:
if (ret < 0) {
ocfs2_calc_new_backup_super(bm_inode,
group,
new_clusters,
first_new_cluster,
cl_cpg, 0);
le16_add_cpu(&group->bg_free_bits_count, backups);
le16_add_cpu(&group->bg_bits, -1 * num_bits);
le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
}
out:
mlog_exit(ret);
return ret;
}
static int update_backups(struct inode * inode, u32 clusters, char *data)
{
int i, ret = 0;
u32 cluster;
u64 blkno;
struct buffer_head *backup = NULL;
struct ocfs2_dinode *backup_di = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
/* calculate the real backups we need to update. */
for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
if (cluster > clusters)
break;
ret = ocfs2_read_block(osb, blkno, &backup, 0, NULL);
if (ret < 0) {
mlog_errno(ret);
break;
}
memcpy(backup->b_data, data, inode->i_sb->s_blocksize);
backup_di = (struct ocfs2_dinode *)backup->b_data;
backup_di->i_blkno = cpu_to_le64(blkno);
ret = ocfs2_write_super_or_backup(osb, backup);
brelse(backup);
backup = NULL;
if (ret < 0) {
mlog_errno(ret);
break;
}
}
return ret;
}
static void ocfs2_update_super_and_backups(struct inode *inode,
int new_clusters)
{
int ret;
u32 clusters = 0;
struct buffer_head *super_bh = NULL;
struct ocfs2_dinode *super_di = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
/*
* update the superblock last.
* It doesn't matter if the write failed.
*/
ret = ocfs2_read_block(osb, OCFS2_SUPER_BLOCK_BLKNO,
&super_bh, 0, NULL);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
super_di = (struct ocfs2_dinode *)super_bh->b_data;
le32_add_cpu(&super_di->i_clusters, new_clusters);
clusters = le32_to_cpu(super_di->i_clusters);
ret = ocfs2_write_super_or_backup(osb, super_bh);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB))
ret = update_backups(inode, clusters, super_bh->b_data);
out:
brelse(super_bh);
if (ret)
printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s"
" during fs resize. This condition is not fatal,"
" but fsck.ocfs2 should be run to fix it\n",
osb->dev_str);
return;
}
/*
* Extend the filesystem to the new number of clusters specified. This entry
* point is only used to extend the current filesystem to the end of the last
* existing group.
*/
int ocfs2_group_extend(struct inode * inode, int new_clusters)
{
int ret;
handle_t *handle;
struct buffer_head *main_bm_bh = NULL;
struct buffer_head *group_bh = NULL;
struct inode *main_bm_inode = NULL;
struct ocfs2_dinode *fe = NULL;
struct ocfs2_group_desc *group = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
u16 cl_bpc;
u32 first_new_cluster;
u64 lgd_blkno;
mlog_entry_void();
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return -EROFS;
if (new_clusters < 0)
return -EINVAL;
else if (new_clusters == 0)
return 0;
main_bm_inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (!main_bm_inode) {
ret = -EINVAL;
mlog_errno(ret);
goto out;
}
mutex_lock(&main_bm_inode->i_mutex);
ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
if (ret < 0) {
mlog_errno(ret);
goto out_mutex;
}
fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb) * 8) {
mlog(ML_ERROR, "The disk is too old and small. "
"Force to do offline resize.");
ret = -EINVAL;
goto out_unlock;
}
if (!OCFS2_IS_VALID_DINODE(fe)) {
OCFS2_RO_ON_INVALID_DINODE(main_bm_inode->i_sb, fe);
ret = -EIO;
goto out_unlock;
}
first_new_cluster = le32_to_cpu(fe->i_clusters);
lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
first_new_cluster - 1);
ret = ocfs2_read_block(osb, lgd_blkno, &group_bh, OCFS2_BH_CACHED,
main_bm_inode);
if (ret < 0) {
mlog_errno(ret);
goto out_unlock;
}
group = (struct ocfs2_group_desc *)group_bh->b_data;
ret = ocfs2_check_group_descriptor(inode->i_sb, fe, group);
if (ret) {
mlog_errno(ret);
goto out_unlock;
}
cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
ret = -EINVAL;
goto out_unlock;
}
mlog(0, "extend the last group at %llu, new clusters = %d\n",
(unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
if (IS_ERR(handle)) {
mlog_errno(PTR_ERR(handle));
ret = -EINVAL;
goto out_unlock;
}
/* update the last group descriptor and inode. */
ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode,
main_bm_bh, group_bh,
first_new_cluster,
new_clusters);
if (ret) {
mlog_errno(ret);
goto out_commit;
}
ocfs2_update_super_and_backups(main_bm_inode, new_clusters);
out_commit:
ocfs2_commit_trans(osb, handle);
out_unlock:
brelse(group_bh);
brelse(main_bm_bh);
ocfs2_inode_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
iput(main_bm_inode);
out:
mlog_exit_void();
return ret;
}
static int ocfs2_check_new_group(struct inode *inode,
struct ocfs2_dinode *di,
struct ocfs2_new_group_input *input,
struct buffer_head *group_bh)
{
int ret;
struct ocfs2_group_desc *gd;
u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
unsigned int max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) *
le16_to_cpu(di->id2.i_chain.cl_bpc);
gd = (struct ocfs2_group_desc *)group_bh->b_data;
ret = -EIO;
if (!OCFS2_IS_VALID_GROUP_DESC(gd))
mlog(ML_ERROR, "Group descriptor # %llu isn't valid.\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno));
else if (di->i_blkno != gd->bg_parent_dinode)
mlog(ML_ERROR, "Group descriptor # %llu has bad parent "
"pointer (%llu, expected %llu)\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
(unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
(unsigned long long)le64_to_cpu(di->i_blkno));
else if (le16_to_cpu(gd->bg_bits) > max_bits)
mlog(ML_ERROR, "Group descriptor # %llu has bit count of %u\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits));
else if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits))
mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
"claims that %u are free\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
le16_to_cpu(gd->bg_free_bits_count));
else if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size)))
mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
"max bitmap bits of %u\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
8 * le16_to_cpu(gd->bg_size));
else if (le16_to_cpu(gd->bg_chain) != input->chain)
mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
"while input has %u set.\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_chain), input->chain);
else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc)
mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
"input has %u clusters set\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits), input->clusters);
else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc)
mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u "
"but it should have %u set\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
input->frees * cl_bpc);
else
ret = 0;
return ret;
}
static int ocfs2_verify_group_and_input(struct inode *inode,
struct ocfs2_dinode *di,
struct ocfs2_new_group_input *input,
struct buffer_head *group_bh)
{
u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count);
u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec);
u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group);
u32 total_clusters = le32_to_cpu(di->i_clusters);
int ret = -EINVAL;
if (cluster < total_clusters)
mlog(ML_ERROR, "add a group which is in the current volume.\n");
else if (input->chain >= cl_count)
mlog(ML_ERROR, "input chain exceeds the limit.\n");
else if (next_free != cl_count && next_free != input->chain)
mlog(ML_ERROR,
"the add group should be in chain %u\n", next_free);
else if (total_clusters + input->clusters < total_clusters)
mlog(ML_ERROR, "add group's clusters overflow.\n");
else if (input->clusters > cl_cpg)
mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n");
else if (input->frees > input->clusters)
mlog(ML_ERROR, "the free cluster exceeds the total clusters\n");
else if (total_clusters % cl_cpg != 0)
mlog(ML_ERROR,
"the last group isn't full. Use group extend first.\n");
else if (input->group != ocfs2_which_cluster_group(inode, cluster))
mlog(ML_ERROR, "group blkno is invalid\n");
else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh)))
mlog(ML_ERROR, "group descriptor check failed.\n");
else
ret = 0;
return ret;
}
/* Add a new group descriptor to global_bitmap. */
int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
{
int ret;
handle_t *handle;
struct buffer_head *main_bm_bh = NULL;
struct inode *main_bm_inode = NULL;
struct ocfs2_dinode *fe = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *group_bh = NULL;
struct ocfs2_group_desc *group = NULL;
struct ocfs2_chain_list *cl;
struct ocfs2_chain_rec *cr;
u16 cl_bpc;
mlog_entry_void();
if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
return -EROFS;
main_bm_inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
OCFS2_INVALID_SLOT);
if (!main_bm_inode) {
ret = -EINVAL;
mlog_errno(ret);
goto out;
}
mutex_lock(&main_bm_inode->i_mutex);
ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
if (ret < 0) {
mlog_errno(ret);
goto out_mutex;
}
fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
ocfs2_group_bitmap_size(osb->sb) * 8) {
mlog(ML_ERROR, "The disk is too old and small."
" Force to do offline resize.");
ret = -EINVAL;
goto out_unlock;
}
ret = ocfs2_read_block(osb, input->group, &group_bh, 0, NULL);
if (ret < 0) {
mlog(ML_ERROR, "Can't read the group descriptor # %llu "
"from the device.", (unsigned long long)input->group);
goto out_unlock;
}
ocfs2_set_new_buffer_uptodate(inode, group_bh);
ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh);
if (ret) {
mlog_errno(ret);
goto out_unlock;
}
mlog(0, "Add a new group %llu in chain = %u, length = %u\n",
(unsigned long long)input->group, input->chain, input->clusters);
handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS);
if (IS_ERR(handle)) {
mlog_errno(PTR_ERR(handle));
ret = -EINVAL;
goto out_unlock;
}
cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
cl = &fe->id2.i_chain;
cr = &cl->cl_recs[input->chain];
ret = ocfs2_journal_access(handle, main_bm_inode, group_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
}
group = (struct ocfs2_group_desc *)group_bh->b_data;
group->bg_next_group = cr->c_blkno;
ret = ocfs2_journal_dirty(handle, group_bh);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
}
ret = ocfs2_journal_access(handle, main_bm_inode, main_bm_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out_commit;
}
if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) {
le16_add_cpu(&cl->cl_next_free_rec, 1);
memset(cr, 0, sizeof(struct ocfs2_chain_rec));
}
cr->c_blkno = le64_to_cpu(input->group);
le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
le32_add_cpu(&cr->c_free, input->frees * cl_bpc);
le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc);
le32_add_cpu(&fe->id1.bitmap1.i_used,
(input->clusters - input->frees) * cl_bpc);
le32_add_cpu(&fe->i_clusters, input->clusters);
ocfs2_journal_dirty(handle, main_bm_bh);
spin_lock(&OCFS2_I(main_bm_inode)->ip_lock);
OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
le64_add_cpu(&fe->i_size, input->clusters << osb->s_clustersize_bits);
spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock);
i_size_write(main_bm_inode, le64_to_cpu(fe->i_size));
ocfs2_update_super_and_backups(main_bm_inode, input->clusters);
out_commit:
ocfs2_commit_trans(osb, handle);
out_unlock:
brelse(group_bh);
brelse(main_bm_bh);
ocfs2_inode_unlock(main_bm_inode, 1);
out_mutex:
mutex_unlock(&main_bm_inode->i_mutex);
iput(main_bm_inode);
out:
mlog_exit_void();
return ret;
}

32
fs/ocfs2/resize.h Normal file
Bestand weergeven

@@ -0,0 +1,32 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* resize.h
*
* Function prototypes
*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef OCFS2_RESIZE_H
#define OCFS2_RESIZE_H
int ocfs2_group_extend(struct inode * inode, int new_clusters);
int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input);
#endif /* OCFS2_RESIZE_H */

19
fs/ocfs2/slot_map.c
Bestand weergeven

@@ -48,25 +48,6 @@ static void __ocfs2_fill_slot(struct ocfs2_slot_info *si,
s16 slot_num,
s16 node_num);
/* Use the slot information we've collected to create a map of mounted
* nodes. Should be holding an EX on super block. assumes slot info is
* up to date. Note that we call this *after* we find a slot, so our
* own node should be set in the map too... */
void ocfs2_populate_mounted_map(struct ocfs2_super *osb)
{
int i;
struct ocfs2_slot_info *si = osb->slot_info;
spin_lock(&si->si_lock);
for (i = 0; i < si->si_size; i++)
if (si->si_global_node_nums[i] != OCFS2_INVALID_SLOT)
ocfs2_node_map_set_bit(osb, &osb->mounted_map,
si->si_global_node_nums[i]);
spin_unlock(&si->si_lock);
}
/* post the slot information on disk into our slot_info struct. */
void ocfs2_update_slot_info(struct ocfs2_slot_info *si)
{

2
fs/ocfs2/slot_map.h
Bestand weergeven

@@ -52,8 +52,6 @@ s16 ocfs2_node_num_to_slot(struct ocfs2_slot_info *si,
void ocfs2_clear_slot(struct ocfs2_slot_info *si,
s16 slot_num);
void ocfs2_populate_mounted_map(struct ocfs2_super *osb);
static inline int ocfs2_is_empty_slot(struct ocfs2_slot_info *si,
int slot_num)
{

20
fs/ocfs2/suballoc.c
Bestand weergeven

@@ -101,8 +101,6 @@ static inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg
static inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode,
u64 bg_blkno,
u16 bg_bit_off);
static inline u64 ocfs2_which_cluster_group(struct inode *inode,
u32 cluster);
static inline void ocfs2_block_to_cluster_group(struct inode *inode,
u64 data_blkno,
u64 *bg_blkno,
@@ -114,7 +112,7 @@ void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac)
if (inode) {
if (ac->ac_which != OCFS2_AC_USE_LOCAL)
ocfs2_meta_unlock(inode, 1);
ocfs2_inode_unlock(inode, 1);
mutex_unlock(&inode->i_mutex);
@@ -131,9 +129,9 @@ static u32 ocfs2_bits_per_group(struct ocfs2_chain_list *cl)
}
/* somewhat more expensive than our other checks, so use sparingly. */
static int ocfs2_check_group_descriptor(struct super_block *sb,
struct ocfs2_dinode *di,
struct ocfs2_group_desc *gd)
int ocfs2_check_group_descriptor(struct super_block *sb,
struct ocfs2_dinode *di,
struct ocfs2_group_desc *gd)
{
unsigned int max_bits;
@@ -412,7 +410,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
mutex_lock(&alloc_inode->i_mutex);
status = ocfs2_meta_lock(alloc_inode, &bh, 1);
status = ocfs2_inode_lock(alloc_inode, &bh, 1);
if (status < 0) {
mutex_unlock(&alloc_inode->i_mutex);
iput(alloc_inode);
@@ -1443,8 +1441,7 @@ static inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode,
/* given a cluster offset, calculate which block group it belongs to
* and return that block offset. */
static inline u64 ocfs2_which_cluster_group(struct inode *inode,
u32 cluster)
u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
u32 group_no;
@@ -1519,8 +1516,9 @@ int __ocfs2_claim_clusters(struct ocfs2_super *osb,
if (min_clusters > (osb->bitmap_cpg - 1)) {
/* The only paths asking for contiguousness
* should know about this already. */
mlog(ML_ERROR, "minimum allocation requested exceeds "
"group bitmap size!");
mlog(ML_ERROR, "minimum allocation requested %u exceeds "
"group bitmap size %u!\n", min_clusters,
osb->bitmap_cpg);
status = -ENOSPC;
goto bail;
}

8
fs/ocfs2/suballoc.h
Bestand weergeven

@@ -147,4 +147,12 @@ static inline int ocfs2_is_cluster_bitmap(struct inode *inode)
int ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac);
/* given a cluster offset, calculate which block group it belongs to
* and return that block offset. */
u64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster);
/* somewhat more expensive than our other checks, so use sparingly. */
int ocfs2_check_group_descriptor(struct super_block *sb,
struct ocfs2_dinode *di,
struct ocfs2_group_desc *gd);
#endif /* _CHAINALLOC_H_ */

140
fs/ocfs2/super.c
Bestand weergeven

@@ -65,7 +65,6 @@
#include "sysfile.h"
#include "uptodate.h"
#include "ver.h"
#include "vote.h"
#include "buffer_head_io.h"
@@ -84,9 +83,11 @@ MODULE_LICENSE("GPL");
struct mount_options
{
unsigned long commit_interval;
unsigned long mount_opt;
unsigned int atime_quantum;
signed short slot;
unsigned int localalloc_opt;
};
static int ocfs2_parse_options(struct super_block *sb, char *options,
@@ -150,6 +151,9 @@ enum {
Opt_data_writeback,
Opt_atime_quantum,
Opt_slot,
Opt_commit,
Opt_localalloc,
Opt_localflocks,
Opt_err,
};
@@ -165,6 +169,9 @@ static match_table_t tokens = {
{Opt_data_writeback, "data=writeback"},
{Opt_atime_quantum, "atime_quantum=%u"},
{Opt_slot, "preferred_slot=%u"},
{Opt_commit, "commit=%u"},
{Opt_localalloc, "localalloc=%d"},
{Opt_localflocks, "localflocks"},
{Opt_err, NULL}
};
@@ -213,7 +220,7 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
mlog_entry_void();
new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE);
new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
if (IS_ERR(new)) {
status = PTR_ERR(new);
mlog_errno(status);
@@ -221,7 +228,7 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
}
osb->root_inode = new;
new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE);
new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
if (IS_ERR(new)) {
status = PTR_ERR(new);
mlog_errno(status);
@@ -443,6 +450,8 @@ unlock_osb:
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
if (parsed_options.commit_interval)
osb->osb_commit_interval = parsed_options.commit_interval;
if (!ocfs2_is_hard_readonly(osb))
ocfs2_set_journal_params(osb);
@@ -597,6 +606,8 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
osb->osb_commit_interval = parsed_options.commit_interval;
osb->local_alloc_size = parsed_options.localalloc_opt;
sb->s_magic = OCFS2_SUPER_MAGIC;
@@ -747,9 +758,11 @@ static int ocfs2_parse_options(struct super_block *sb,
mlog_entry("remount: %d, options: \"%s\"\n", is_remount,
options ? options : "(none)");
mopt->commit_interval = 0;
mopt->mount_opt = 0;
mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
mopt->slot = OCFS2_INVALID_SLOT;
mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE;
if (!options) {
status = 1;
@@ -816,6 +829,41 @@ static int ocfs2_parse_options(struct super_block *sb,
if (option)
mopt->slot = (s16)option;
break;
case Opt_commit:
option = 0;
if (match_int(&args[0], &option)) {
status = 0;
goto bail;
}
if (option < 0)
return 0;
if (option == 0)
option = JBD_DEFAULT_MAX_COMMIT_AGE;
mopt->commit_interval = HZ * option;
break;
case Opt_localalloc:
option = 0;
if (match_int(&args[0], &option)) {
status = 0;
goto bail;
}
if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8))
mopt->localalloc_opt = option;
break;
case Opt_localflocks:
/*
* Changing this during remount could race
* flock() requests, or "unbalance" existing
* ones (e.g., a lock is taken in one mode but
* dropped in the other). If users care enough
* to flip locking modes during remount, we
* could add a "local" flag to individual
* flock structures for proper tracking of
* state.
*/
if (!is_remount)
mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
break;
default:
mlog(ML_ERROR,
"Unrecognized mount option \"%s\" "
@@ -864,6 +912,16 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
if (osb->osb_commit_interval)
seq_printf(s, ",commit=%u",
(unsigned) (osb->osb_commit_interval / HZ));
if (osb->local_alloc_size != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE)
seq_printf(s, ",localalloc=%d", osb->local_alloc_size);
if (opts & OCFS2_MOUNT_LOCALFLOCKS)
seq_printf(s, ",localflocks,");
return 0;
}
@@ -965,7 +1023,7 @@ static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
goto bail;
}
status = ocfs2_meta_lock(inode, &bh, 0);
status = ocfs2_inode_lock(inode, &bh, 0);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -989,7 +1047,7 @@ static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
brelse(bh);
ocfs2_meta_unlock(inode, 0);
ocfs2_inode_unlock(inode, 0);
status = 0;
bail:
if (inode)
@@ -1020,8 +1078,7 @@ static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data)
oi->ip_clusters = 0;
ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
ocfs2_lock_res_init_once(&oi->ip_meta_lockres);
ocfs2_lock_res_init_once(&oi->ip_data_lockres);
ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
ocfs2_lock_res_init_once(&oi->ip_open_lockres);
ocfs2_metadata_cache_init(&oi->vfs_inode);
@@ -1117,25 +1174,12 @@ static int ocfs2_mount_volume(struct super_block *sb)
goto leave;
}
status = ocfs2_register_hb_callbacks(osb);
if (status < 0) {
mlog_errno(status);
goto leave;
}
status = ocfs2_dlm_init(osb);
if (status < 0) {
mlog_errno(status);
goto leave;
}
/* requires vote_thread to be running. */
status = ocfs2_register_net_handlers(osb);
if (status < 0) {
mlog_errno(status);
goto leave;
}
status = ocfs2_super_lock(osb, 1);
if (status < 0) {
mlog_errno(status);
@@ -1150,8 +1194,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
goto leave;
}
ocfs2_populate_mounted_map(osb);
/* load all node-local system inodes */
status = ocfs2_init_local_system_inodes(osb);
if (status < 0) {
@@ -1174,15 +1216,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
if (ocfs2_mount_local(osb))
goto leave;
/* This should be sent *after* we recovered our journal as it
* will cause other nodes to unmark us as needing
* recovery. However, we need to send it *before* dropping the
* super block lock as otherwise their recovery threads might
* try to clean us up while we're live! */
status = ocfs2_request_mount_vote(osb);
if (status < 0)
mlog_errno(status);
leave:
if (unlock_super)
ocfs2_super_unlock(osb, 1);
@@ -1240,10 +1273,6 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
mlog_errno(tmp);
return;
}
tmp = ocfs2_request_umount_vote(osb);
if (tmp < 0)
mlog_errno(tmp);
}
if (osb->slot_num != OCFS2_INVALID_SLOT)
@@ -1254,13 +1283,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
ocfs2_release_system_inodes(osb);
if (osb->dlm) {
ocfs2_unregister_net_handlers(osb);
if (osb->dlm)
ocfs2_dlm_shutdown(osb);
}
ocfs2_clear_hb_callbacks(osb);
debugfs_remove(osb->osb_debug_root);
@@ -1315,7 +1339,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
int i, cbits, bbits;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
struct inode *inode = NULL;
struct buffer_head *bitmap_bh = NULL;
struct ocfs2_journal *journal;
__le32 uuid_net_key;
struct ocfs2_super *osb;
@@ -1344,19 +1367,13 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->s_sectsize_bits = blksize_bits(sector_size);
BUG_ON(!osb->s_sectsize_bits);
osb->net_response_ids = 0;
spin_lock_init(&osb->net_response_lock);
INIT_LIST_HEAD(&osb->net_response_list);
INIT_LIST_HEAD(&osb->osb_net_handlers);
init_waitqueue_head(&osb->recovery_event);
spin_lock_init(&osb->vote_task_lock);
init_waitqueue_head(&osb->vote_event);
osb->vote_work_sequence = 0;
osb->vote_wake_sequence = 0;
spin_lock_init(&osb->dc_task_lock);
init_waitqueue_head(&osb->dc_event);
osb->dc_work_sequence = 0;
osb->dc_wake_sequence = 0;
INIT_LIST_HEAD(&osb->blocked_lock_list);
osb->blocked_lock_count = 0;
INIT_LIST_HEAD(&osb->vote_list);
spin_lock_init(&osb->osb_lock);
atomic_set(&osb->alloc_stats.moves, 0);
@@ -1496,7 +1513,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
}
memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key));
osb->net_key = le32_to_cpu(uuid_net_key);
strncpy(osb->vol_label, di->id2.i_super.s_label, 63);
osb->vol_label[63] = '\0';
@@ -1539,25 +1555,9 @@ static int ocfs2_initialize_super(struct super_block *sb,
}
osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
/* We don't have a cluster lock on the bitmap here because
* we're only interested in static information and the extra
* complexity at mount time isn't worht it. Don't pass the
* inode in to the read function though as we don't want it to
* be put in the cache. */
status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0,
NULL);
iput(inode);
if (status < 0) {
mlog_errno(status);
goto bail;
}
di = (struct ocfs2_dinode *) bitmap_bh->b_data;
osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
brelse(bitmap_bh);
mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n",
(unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg);
osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8;
status = ocfs2_init_slot_info(osb);
if (status < 0) {

2
fs/ocfs2/sysfile.c
Bestand weergeven

@@ -112,7 +112,7 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
goto bail;
}
inode = ocfs2_iget(osb, blkno, OCFS2_FI_FLAG_SYSFILE);
inode = ocfs2_iget(osb, blkno, OCFS2_FI_FLAG_SYSFILE, type);
if (IS_ERR(inode)) {
mlog_errno(PTR_ERR(inode));
inode = NULL;

2
fs/ocfs2/ver.c
Bestand weergeven

@@ -29,7 +29,7 @@
#include "ver.h"
#define OCFS2_BUILD_VERSION "1.3.3"
#define OCFS2_BUILD_VERSION "1.5.0"
#define VERSION_STR "OCFS2 " OCFS2_BUILD_VERSION

756
fs/ocfs2/vote.c
Bestand weergeven

@@ -1,756 +0,0 @@
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* vote.c
*
* description here
*
* Copyright (C) 2003, 2004 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/kthread.h>
#include <cluster/heartbeat.h>
#include <cluster/nodemanager.h>
#include <cluster/tcp.h>
#include <dlm/dlmapi.h>
#define MLOG_MASK_PREFIX ML_VOTE
#include <cluster/masklog.h>
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
#include "extent_map.h"
#include "heartbeat.h"
#include "inode.h"
#include "journal.h"
#include "slot_map.h"
#include "vote.h"
#include "buffer_head_io.h"
#define OCFS2_MESSAGE_TYPE_VOTE (0x1)
#define OCFS2_MESSAGE_TYPE_RESPONSE (0x2)
struct ocfs2_msg_hdr
{
__be32 h_response_id; /* used to lookup message handle on sending
* node. */
__be32 h_request;
__be64 h_blkno;
__be32 h_generation;
__be32 h_node_num; /* node sending this particular message. */
};
struct ocfs2_vote_msg
{
struct ocfs2_msg_hdr v_hdr;
__be32 v_reserved1;
} __attribute__ ((packed));
/* Responses are given these values to maintain backwards
* compatibility with older ocfs2 versions */
#define OCFS2_RESPONSE_OK (0)
#define OCFS2_RESPONSE_BUSY (-16)
#define OCFS2_RESPONSE_BAD_MSG (-22)
struct ocfs2_response_msg
{
struct ocfs2_msg_hdr r_hdr;
__be32 r_response;
} __attribute__ ((packed));
struct ocfs2_vote_work {
struct list_head w_list;
struct ocfs2_vote_msg w_msg;
};
enum ocfs2_vote_request {
OCFS2_VOTE_REQ_INVALID = 0,
OCFS2_VOTE_REQ_MOUNT,
OCFS2_VOTE_REQ_UMOUNT,
OCFS2_VOTE_REQ_LAST
};
static inline int ocfs2_is_valid_vote_request(int request)
{
return OCFS2_VOTE_REQ_INVALID < request &&
request < OCFS2_VOTE_REQ_LAST;
}
typedef void (*ocfs2_net_response_callback)(void *priv,
struct ocfs2_response_msg *resp);
struct ocfs2_net_response_cb {
ocfs2_net_response_callback rc_cb;
void *rc_priv;
};
struct ocfs2_net_wait_ctxt {
struct list_head n_list;
u32 n_response_id;
wait_queue_head_t n_event;
struct ocfs2_node_map n_node_map;
int n_response; /* an agreggate response. 0 if
* all nodes are go, < 0 on any
* negative response from any
* node or network error. */
struct ocfs2_net_response_cb *n_callback;
};
static void ocfs2_process_mount_request(struct ocfs2_super *osb,
unsigned int node_num)
{
mlog(0, "MOUNT vote from node %u\n", node_num);
/* The other node only sends us this message when he has an EX
* on the superblock, so our recovery threads (if having been
* launched) are waiting on it.*/
ocfs2_recovery_map_clear(osb, node_num);
ocfs2_node_map_set_bit(osb, &osb->mounted_map, node_num);
/* We clear the umount map here because a node may have been
* previously mounted, safely unmounted but never stopped
* heartbeating - in which case we'd have a stale entry. */
ocfs2_node_map_clear_bit(osb, &osb->umount_map, node_num);
}
static void ocfs2_process_umount_request(struct ocfs2_super *osb,
unsigned int node_num)
{
mlog(0, "UMOUNT vote from node %u\n", node_num);
ocfs2_node_map_clear_bit(osb, &osb->mounted_map, node_num);
ocfs2_node_map_set_bit(osb, &osb->umount_map, node_num);
}
static void ocfs2_process_vote(struct ocfs2_super *osb,
struct ocfs2_vote_msg *msg)
{
int net_status, vote_response;
unsigned int node_num;
u64 blkno;
enum ocfs2_vote_request request;
struct ocfs2_msg_hdr *hdr = &msg->v_hdr;
struct ocfs2_response_msg response;
/* decode the network mumbo jumbo into local variables. */
request = be32_to_cpu(hdr->h_request);
blkno = be64_to_cpu(hdr->h_blkno);
node_num = be32_to_cpu(hdr->h_node_num);
mlog(0, "processing vote: request = %u, blkno = %llu, node_num = %u\n",
request, (unsigned long long)blkno, node_num);
if (!ocfs2_is_valid_vote_request(request)) {
mlog(ML_ERROR, "Invalid vote request %d from node %u\n",
request, node_num);
vote_response = OCFS2_RESPONSE_BAD_MSG;
goto respond;
}
vote_response = OCFS2_RESPONSE_OK;
switch (request) {
case OCFS2_VOTE_REQ_UMOUNT:
ocfs2_process_umount_request(osb, node_num);
goto respond;
case OCFS2_VOTE_REQ_MOUNT:
ocfs2_process_mount_request(osb, node_num);
goto respond;
default:
/* avoids a gcc warning */
break;
}
respond:
/* Response struture is small so we just put it on the stack
* and stuff it inline. */
memset(&response, 0, sizeof(struct ocfs2_response_msg));
response.r_hdr.h_response_id = hdr->h_response_id;
response.r_hdr.h_blkno = hdr->h_blkno;
response.r_hdr.h_generation = hdr->h_generation;
response.r_hdr.h_node_num = cpu_to_be32(osb->node_num);
response.r_response = cpu_to_be32(vote_response);
net_status = o2net_send_message(OCFS2_MESSAGE_TYPE_RESPONSE,
osb->net_key,
&response,
sizeof(struct ocfs2_response_msg),
node_num,
NULL);
/* We still want to error print for ENOPROTOOPT here. The
* sending node shouldn't have unregistered his net handler
* without sending an unmount vote 1st */
if (net_status < 0
&& net_status != -ETIMEDOUT
&& net_status != -ENOTCONN)
mlog(ML_ERROR, "message to node %u fails with error %d!\n",
node_num, net_status);
}
static void ocfs2_vote_thread_do_work(struct ocfs2_super *osb)
{
unsigned long processed;
struct ocfs2_lock_res *lockres;
struct ocfs2_vote_work *work;
mlog_entry_void();
spin_lock(&osb->vote_task_lock);
/* grab this early so we know to try again if a state change and
* wake happens part-way through our work */
osb->vote_work_sequence = osb->vote_wake_sequence;
processed = osb->blocked_lock_count;
while (processed) {
BUG_ON(list_empty(&osb->blocked_lock_list));
lockres = list_entry(osb->blocked_lock_list.next,
struct ocfs2_lock_res, l_blocked_list);
list_del_init(&lockres->l_blocked_list);
osb->blocked_lock_count--;
spin_unlock(&osb->vote_task_lock);
BUG_ON(!processed);
processed--;
ocfs2_process_blocked_lock(osb, lockres);
spin_lock(&osb->vote_task_lock);
}
while (osb->vote_count) {
BUG_ON(list_empty(&osb->vote_list));
work = list_entry(osb->vote_list.next,
struct ocfs2_vote_work, w_list);
list_del(&work->w_list);
osb->vote_count--;
spin_unlock(&osb->vote_task_lock);
ocfs2_process_vote(osb, &work->w_msg);
kfree(work);
spin_lock(&osb->vote_task_lock);
}
spin_unlock(&osb->vote_task_lock);
mlog_exit_void();
}
static int ocfs2_vote_thread_lists_empty(struct ocfs2_super *osb)
{
int empty = 0;
spin_lock(&osb->vote_task_lock);
if (list_empty(&osb->blocked_lock_list) &&
list_empty(&osb->vote_list))
empty = 1;
spin_unlock(&osb->vote_task_lock);
return empty;
}
static int ocfs2_vote_thread_should_wake(struct ocfs2_super *osb)
{
int should_wake = 0;
spin_lock(&osb->vote_task_lock);
if (osb->vote_work_sequence != osb->vote_wake_sequence)
should_wake = 1;
spin_unlock(&osb->vote_task_lock);
return should_wake;
}
int ocfs2_vote_thread(void *arg)
{
int status = 0;
struct ocfs2_super *osb = arg;
/* only quit once we've been asked to stop and there is no more
* work available */
while (!(kthread_should_stop() &&
ocfs2_vote_thread_lists_empty(osb))) {
wait_event_interruptible(osb->vote_event,
ocfs2_vote_thread_should_wake(osb) ||
kthread_should_stop());
mlog(0, "vote_thread: awoken\n");
ocfs2_vote_thread_do_work(osb);
}
osb->vote_task = NULL;
return status;
}
static struct ocfs2_net_wait_ctxt *ocfs2_new_net_wait_ctxt(unsigned int response_id)
{
struct ocfs2_net_wait_ctxt *w;
w = kzalloc(sizeof(*w), GFP_NOFS);
if (!w) {
mlog_errno(-ENOMEM);
goto bail;
}
INIT_LIST_HEAD(&w->n_list);
init_waitqueue_head(&w->n_event);
ocfs2_node_map_init(&w->n_node_map);
w->n_response_id = response_id;
w->n_callback = NULL;
bail:
return w;
}
static unsigned int ocfs2_new_response_id(struct ocfs2_super *osb)
{
unsigned int ret;
spin_lock(&osb->net_response_lock);
ret = ++osb->net_response_ids;
spin_unlock(&osb->net_response_lock);
return ret;
}
static void ocfs2_dequeue_net_wait_ctxt(struct ocfs2_super *osb,
struct ocfs2_net_wait_ctxt *w)
{
spin_lock(&osb->net_response_lock);
list_del(&w->n_list);
spin_unlock(&osb->net_response_lock);
}
static void ocfs2_queue_net_wait_ctxt(struct ocfs2_super *osb,
struct ocfs2_net_wait_ctxt *w)
{
spin_lock(&osb->net_response_lock);
list_add_tail(&w->n_list,
&osb->net_response_list);
spin_unlock(&osb->net_response_lock);
}
static void __ocfs2_mark_node_responded(struct ocfs2_super *osb,
struct ocfs2_net_wait_ctxt *w,
int node_num)
{
assert_spin_locked(&osb->net_response_lock);
ocfs2_node_map_clear_bit(osb, &w->n_node_map, node_num);
if (ocfs2_node_map_is_empty(osb, &w->n_node_map))
wake_up(&w->n_event);
}
/* Intended to be called from the node down callback, we fake remove
* the node from all our response contexts */
void ocfs2_remove_node_from_vote_queues(struct ocfs2_super *osb,
int node_num)
{
struct list_head *p;
struct ocfs2_net_wait_ctxt *w = NULL;
spin_lock(&osb->net_response_lock);
list_for_each(p, &osb->net_response_list) {
w = list_entry(p, struct ocfs2_net_wait_ctxt, n_list);
__ocfs2_mark_node_responded(osb, w, node_num);
}
spin_unlock(&osb->net_response_lock);
}
static int ocfs2_broadcast_vote(struct ocfs2_super *osb,
struct ocfs2_vote_msg *request,
unsigned int response_id,
int *response,
struct ocfs2_net_response_cb *callback)
{
int status, i, remote_err;
struct ocfs2_net_wait_ctxt *w = NULL;
int dequeued = 0;
mlog_entry_void();
w = ocfs2_new_net_wait_ctxt(response_id);
if (!w) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
w->n_callback = callback;
/* we're pretty much ready to go at this point, and this fills
* in n_response which we need anyway... */
ocfs2_queue_net_wait_ctxt(osb, w);
i = ocfs2_node_map_iterate(osb, &osb->mounted_map, 0);
while (i != O2NM_INVALID_NODE_NUM) {
if (i != osb->node_num) {
mlog(0, "trying to send request to node %i\n", i);
ocfs2_node_map_set_bit(osb, &w->n_node_map, i);
remote_err = 0;
status = o2net_send_message(OCFS2_MESSAGE_TYPE_VOTE,
osb->net_key,
request,
sizeof(*request),
i,
&remote_err);
if (status == -ETIMEDOUT) {
mlog(0, "remote node %d timed out!\n", i);
status = -EAGAIN;
goto bail;
}
if (remote_err < 0) {
status = remote_err;
mlog(0, "remote error %d on node %d!\n",
remote_err, i);
mlog_errno(status);
goto bail;
}
if (status < 0) {
mlog_errno(status);
goto bail;
}
}
i++;
i = ocfs2_node_map_iterate(osb, &osb->mounted_map, i);
mlog(0, "next is %d, i am %d\n", i, osb->node_num);
}
mlog(0, "done sending, now waiting on responses...\n");
wait_event(w->n_event, ocfs2_node_map_is_empty(osb, &w->n_node_map));
ocfs2_dequeue_net_wait_ctxt(osb, w);
dequeued = 1;
*response = w->n_response;
status = 0;
bail:
if (w) {
if (!dequeued)
ocfs2_dequeue_net_wait_ctxt(osb, w);
kfree(w);
}
mlog_exit(status);
return status;
}
static struct ocfs2_vote_msg * ocfs2_new_vote_request(struct ocfs2_super *osb,
u64 blkno,
unsigned int generation,
enum ocfs2_vote_request type)
{
struct ocfs2_vote_msg *request;
struct ocfs2_msg_hdr *hdr;
BUG_ON(!ocfs2_is_valid_vote_request(type));
request = kzalloc(sizeof(*request), GFP_NOFS);
if (!request) {
mlog_errno(-ENOMEM);
} else {
hdr = &request->v_hdr;
hdr->h_node_num = cpu_to_be32(osb->node_num);
hdr->h_request = cpu_to_be32(type);
hdr->h_blkno = cpu_to_be64(blkno);
hdr->h_generation = cpu_to_be32(generation);
}
return request;
}
/* Complete the buildup of a new vote request and process the
* broadcast return value. */
static int ocfs2_do_request_vote(struct ocfs2_super *osb,
struct ocfs2_vote_msg *request,
struct ocfs2_net_response_cb *callback)
{
int status, response = -EBUSY;
unsigned int response_id;
struct ocfs2_msg_hdr *hdr;
response_id = ocfs2_new_response_id(osb);
hdr = &request->v_hdr;
hdr->h_response_id = cpu_to_be32(response_id);
status = ocfs2_broadcast_vote(osb, request, response_id, &response,
callback);
if (status < 0) {
mlog_errno(status);
goto bail;
}
status = response;
bail:
return status;
}
int ocfs2_request_mount_vote(struct ocfs2_super *osb)
{
int status;
struct ocfs2_vote_msg *request = NULL;
request = ocfs2_new_vote_request(osb, 0ULL, 0, OCFS2_VOTE_REQ_MOUNT);
if (!request) {
status = -ENOMEM;
goto bail;
}
status = -EAGAIN;
while (status == -EAGAIN) {
if (!(osb->s_mount_opt & OCFS2_MOUNT_NOINTR) &&
signal_pending(current)) {
status = -ERESTARTSYS;
goto bail;
}
if (ocfs2_node_map_is_only(osb, &osb->mounted_map,
osb->node_num)) {
status = 0;
goto bail;
}
status = ocfs2_do_request_vote(osb, request, NULL);
}
bail:
kfree(request);
return status;
}
int ocfs2_request_umount_vote(struct ocfs2_super *osb)
{
int status;
struct ocfs2_vote_msg *request = NULL;
request = ocfs2_new_vote_request(osb, 0ULL, 0, OCFS2_VOTE_REQ_UMOUNT);
if (!request) {
status = -ENOMEM;
goto bail;
}
status = -EAGAIN;
while (status == -EAGAIN) {
/* Do not check signals on this vote... We really want
* this one to go all the way through. */
if (ocfs2_node_map_is_only(osb, &osb->mounted_map,
osb->node_num)) {
status = 0;
goto bail;
}
status = ocfs2_do_request_vote(osb, request, NULL);
}
bail:
kfree(request);
return status;
}
/* TODO: This should eventually be a hash table! */
static struct ocfs2_net_wait_ctxt * __ocfs2_find_net_wait_ctxt(struct ocfs2_super *osb,
u32 response_id)
{
struct list_head *p;
struct ocfs2_net_wait_ctxt *w = NULL;
list_for_each(p, &osb->net_response_list) {
w = list_entry(p, struct ocfs2_net_wait_ctxt, n_list);
if (response_id == w->n_response_id)
break;
w = NULL;
}
return w;
}
/* Translate response codes into local node errno values */
static inline int ocfs2_translate_response(int response)
{
int ret;
switch (response) {
case OCFS2_RESPONSE_OK:
ret = 0;
break;
case OCFS2_RESPONSE_BUSY:
ret = -EBUSY;
break;
default:
ret = -EINVAL;
}
return ret;
}
static int ocfs2_handle_response_message(struct o2net_msg *msg,
u32 len,
void *data, void **ret_data)
{
unsigned int response_id, node_num;
int response_status;
struct ocfs2_super *osb = data;
struct ocfs2_response_msg *resp;
struct ocfs2_net_wait_ctxt * w;
struct ocfs2_net_response_cb *resp_cb;
resp = (struct ocfs2_response_msg *) msg->buf;
response_id = be32_to_cpu(resp->r_hdr.h_response_id);
node_num = be32_to_cpu(resp->r_hdr.h_node_num);
response_status =
ocfs2_translate_response(be32_to_cpu(resp->r_response));
mlog(0, "received response message:\n");
mlog(0, "h_response_id = %u\n", response_id);
mlog(0, "h_request = %u\n", be32_to_cpu(resp->r_hdr.h_request));
mlog(0, "h_blkno = %llu\n",
(unsigned long long)be64_to_cpu(resp->r_hdr.h_blkno));
mlog(0, "h_generation = %u\n", be32_to_cpu(resp->r_hdr.h_generation));
mlog(0, "h_node_num = %u\n", node_num);
mlog(0, "r_response = %d\n", response_status);
spin_lock(&osb->net_response_lock);
w = __ocfs2_find_net_wait_ctxt(osb, response_id);
if (!w) {
mlog(0, "request not found!\n");
goto bail;
}
resp_cb = w->n_callback;
if (response_status && (!w->n_response)) {
/* we only really need one negative response so don't
* set it twice. */
w->n_response = response_status;
}
if (resp_cb) {
spin_unlock(&osb->net_response_lock);
resp_cb->rc_cb(resp_cb->rc_priv, resp);
spin_lock(&osb->net_response_lock);
}
__ocfs2_mark_node_responded(osb, w, node_num);
bail:
spin_unlock(&osb->net_response_lock);
return 0;
}
static int ocfs2_handle_vote_message(struct o2net_msg *msg,
u32 len,
void *data, void **ret_data)
{
int status;
struct ocfs2_super *osb = data;
struct ocfs2_vote_work *work;
work = kmalloc(sizeof(struct ocfs2_vote_work), GFP_NOFS);
if (!work) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
INIT_LIST_HEAD(&work->w_list);
memcpy(&work->w_msg, msg->buf, sizeof(struct ocfs2_vote_msg));
mlog(0, "scheduling vote request:\n");
mlog(0, "h_response_id = %u\n",
be32_to_cpu(work->w_msg.v_hdr.h_response_id));
mlog(0, "h_request = %u\n", be32_to_cpu(work->w_msg.v_hdr.h_request));
mlog(0, "h_blkno = %llu\n",
(unsigned long long)be64_to_cpu(work->w_msg.v_hdr.h_blkno));
mlog(0, "h_generation = %u\n",
be32_to_cpu(work->w_msg.v_hdr.h_generation));
mlog(0, "h_node_num = %u\n",
be32_to_cpu(work->w_msg.v_hdr.h_node_num));
spin_lock(&osb->vote_task_lock);
list_add_tail(&work->w_list, &osb->vote_list);
osb->vote_count++;
spin_unlock(&osb->vote_task_lock);
ocfs2_kick_vote_thread(osb);
status = 0;
bail:
return status;
}
void ocfs2_unregister_net_handlers(struct ocfs2_super *osb)
{
if (!osb->net_key)
return;
o2net_unregister_handler_list(&osb->osb_net_handlers);
if (!list_empty(&osb->net_response_list))
mlog(ML_ERROR, "net response list not empty!\n");
osb->net_key = 0;
}
int ocfs2_register_net_handlers(struct ocfs2_super *osb)
{
int status = 0;
if (ocfs2_mount_local(osb))
return 0;
status = o2net_register_handler(OCFS2_MESSAGE_TYPE_RESPONSE,
osb->net_key,
sizeof(struct ocfs2_response_msg),
ocfs2_handle_response_message,
osb, NULL, &osb->osb_net_handlers);
if (status) {
mlog_errno(status);
goto bail;
}
status = o2net_register_handler(OCFS2_MESSAGE_TYPE_VOTE,
osb->net_key,
sizeof(struct ocfs2_vote_msg),
ocfs2_handle_vote_message,
osb, NULL, &osb->osb_net_handlers);
if (status) {
mlog_errno(status);
goto bail;
}
bail:
if (status < 0)
ocfs2_unregister_net_handlers(osb);
return status;
}