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Merge tag '5.8-rc-smb3-fixes-part-1' of git://git.samba.org/sfrench/cifs-2.6

Browse Source 
Pull cifs updates from Steve French:
 "22 changesets, 2 for stable.

  Includes big performance improvement for large i/o when using
  multichannel, also includes DFS fixes"

* tag '5.8-rc-smb3-fixes-part-1' of git://git.samba.org/sfrench/cifs-2.6: (22 commits)
  cifs: update internal module version number
  cifs: multichannel: try to rebind when reconnecting a channel
  cifs: multichannel: use pointer for binding channel
  smb3: remove static checker warning
  cifs: multichannel: move channel selection above transport layer
  cifs: multichannel: always zero struct cifs_io_parms
  cifs: dump Security Type info in DebugData
  smb3: fix incorrect number of credits when ioctl MaxOutputResponse > 64K
  smb3: default to minimum of two channels when multichannel specified
  cifs: multichannel: move channel selection in function
  cifs: fix minor typos in comments and log messages
  smb3: minor update to compression header definitions
  cifs: minor fix to two debug messages
  cifs: Standardize logging output
  smb3: Add new parm "nodelete"
  cifs: move some variables off the stack in smb2_ioctl_query_info
  cifs: reduce stack use in smb2_compound_op
  cifs: get rid of unused parameter in reconn_setup_dfs_targets()
  cifs: handle hostnames that resolve to same ip in failover
  cifs: set up next DFS target before generic_ip_connect()
  ...
This commit is contained in:
Linus Torvalds
2020-06-05 16:40:53 -07:00
parent 9daa0a27a0 331cc667a9
commit 3803d5e4d3
27 changed files with 1040 additions and 728 deletions
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60
fs/cifs/file.c
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@@ -857,7 +857,7 @@ cifs_reopen_persistent_handles(struct cifs_tcon *tcon)
tcon->need_reopen_files = false;
cifs_dbg(FYI, "Reopen persistent handles");
cifs_dbg(FYI, "Reopen persistent handles\n");
INIT_LIST_HEAD(&tmp_list);
/* list all files open on tree connection, reopen resilient handles */
@@ -1853,7 +1853,7 @@ cifs_write(struct cifsFileInfo *open_file, __u32 pid, const char *write_data,
unsigned int xid;
struct dentry *dentry = open_file->dentry;
struct cifsInodeInfo *cifsi = CIFS_I(d_inode(dentry));
struct cifs_io_parms io_parms;
struct cifs_io_parms io_parms = {0};
cifs_dbg(FYI, "write %zd bytes to offset %lld of %pd\n",
write_size, *offset, dentry);
@@ -2056,7 +2056,7 @@ find_writable_file(struct cifsInodeInfo *cifs_inode, int flags)
rc = cifs_get_writable_file(cifs_inode, flags, &cfile);
if (rc)
cifs_dbg(FYI, "couldn't find writable handle rc=%d", rc);
cifs_dbg(FYI, "Couldn't find writable handle rc=%d\n", rc);
return cfile;
}
@@ -2292,8 +2292,6 @@ wdata_send_pages(struct cifs_writedata *wdata, unsigned int nr_pages,
struct address_space *mapping, struct writeback_control *wbc)
{
int rc;
struct TCP_Server_Info *server =
tlink_tcon(wdata->cfile->tlink)->ses->server;
wdata->sync_mode = wbc->sync_mode;
wdata->nr_pages = nr_pages;
@@ -2305,14 +2303,15 @@ wdata_send_pages(struct cifs_writedata *wdata, unsigned int nr_pages,
wdata->bytes = ((nr_pages - 1) * PAGE_SIZE) + wdata->tailsz;
wdata->pid = wdata->cfile->pid;
rc = adjust_credits(server, &wdata->credits, wdata->bytes);
rc = adjust_credits(wdata->server, &wdata->credits, wdata->bytes);
if (rc)
return rc;
if (wdata->cfile->invalidHandle)
rc = -EAGAIN;
else
rc = server->ops->async_writev(wdata, cifs_writedata_release);
rc = wdata->server->ops->async_writev(wdata,
cifs_writedata_release);
return rc;
}
@@ -2349,7 +2348,8 @@ static int cifs_writepages(struct address_space *mapping,
range_whole = true;
scanned = true;
}
server = cifs_sb_master_tcon(cifs_sb)->ses->server;
server = cifs_pick_channel(cifs_sb_master_tcon(cifs_sb)->ses);
retry:
while (!done && index <= end) {
unsigned int i, nr_pages, found_pages, wsize;
@@ -2403,6 +2403,7 @@ retry:
wdata->credits = credits_on_stack;
wdata->cfile = cfile;
wdata->server = server;
cfile = NULL;
if (!wdata->cfile) {
@@ -2806,8 +2807,7 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list,
unsigned int wsize;
struct cifs_credits credits;
int rc;
struct TCP_Server_Info *server =
tlink_tcon(wdata->cfile->tlink)->ses->server;
struct TCP_Server_Info *server = wdata->server;
do {
if (wdata->cfile->invalidHandle) {
@@ -2893,7 +2893,7 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
else
pid = current->tgid;
server = tlink_tcon(open_file->tlink)->ses->server;
server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
xid = get_xid();
do {
@@ -2923,11 +2923,9 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
from, &pagevec, cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
"direct_writev couldn't get user pages "
"(rc=%zd) iter type %d iov_offset %zd "
"count %zd\n",
result, iov_iter_type(from),
from->iov_offset, from->count);
"direct_writev couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
result, iov_iter_type(from),
from->iov_offset, from->count);
dump_stack();
rc = result;
@@ -2999,6 +2997,7 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
wdata->nr_pages = nr_pages;
wdata->offset = (__u64)offset;
wdata->cfile = cifsFileInfo_get(open_file);
wdata->server = server;
wdata->pid = pid;
wdata->bytes = cur_len;
wdata->pagesz = PAGE_SIZE;
@@ -3540,8 +3539,10 @@ static int cifs_resend_rdata(struct cifs_readdata *rdata,
unsigned int rsize;
struct cifs_credits credits;
int rc;
struct TCP_Server_Info *server =
tlink_tcon(rdata->cfile->tlink)->ses->server;
struct TCP_Server_Info *server;
/* XXX: should we pick a new channel here? */
server = rdata->server;
do {
if (rdata->cfile->invalidHandle) {
@@ -3620,7 +3621,7 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
size_t start;
struct iov_iter direct_iov = ctx->iter;
server = tlink_tcon(open_file->tlink)->ses->server;
server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
@@ -3654,12 +3655,10 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
"couldn't get user pages (rc=%zd)"
" iter type %d"
" iov_offset %zd count %zd\n",
result, iov_iter_type(&direct_iov),
direct_iov.iov_offset,
direct_iov.count);
"Couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
result, iov_iter_type(&direct_iov),
direct_iov.iov_offset,
direct_iov.count);
dump_stack();
rc = result;
@@ -3706,6 +3705,7 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
rdata->tailsz = PAGE_SIZE;
}
rdata->server = server;
rdata->cfile = cifsFileInfo_get(open_file);
rdata->nr_pages = npages;
rdata->offset = offset;
@@ -4018,7 +4018,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
unsigned int xid;
char *cur_offset;
struct cifsFileInfo *open_file;
struct cifs_io_parms io_parms;
struct cifs_io_parms io_parms = {0};
int buf_type = CIFS_NO_BUFFER;
__u32 pid;
@@ -4035,7 +4035,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
}
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
server = tcon->ses->server;
server = cifs_pick_channel(tcon->ses);
if (!server->ops->sync_read) {
free_xid(xid);
@@ -4074,6 +4074,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
io_parms.tcon = tcon;
io_parms.offset = *offset;
io_parms.length = current_read_size;
io_parms.server = server;
rc = server->ops->sync_read(xid, &open_file->fid, &io_parms,
&bytes_read, &cur_offset,
&buf_type);
@@ -4376,7 +4377,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
pid = current->tgid;
rc = 0;
server = tlink_tcon(open_file->tlink)->ses->server;
server = cifs_pick_channel(tlink_tcon(open_file->tlink)->ses);
cifs_dbg(FYI, "%s: file=%p mapping=%p num_pages=%u\n",
__func__, file, mapping, num_pages);
@@ -4447,6 +4448,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
}
rdata->cfile = cifsFileInfo_get(open_file);
rdata->server = server;
rdata->mapping = mapping;
rdata->offset = offset;
rdata->bytes = bytes;
@@ -4828,7 +4830,7 @@ static int cifs_swap_activate(struct swap_info_struct *sis,
}
*span = sis->pages;
printk_once(KERN_WARNING "Swap support over SMB3 is experimental\n");
pr_warn_once("Swap support over SMB3 is experimental\n");
/*
* TODO: consider adding ACL (or documenting how) to prevent other