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[AF_RXRPC]: Make the in-kernel AFS filesystem use AF_RXRPC.

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Make the in-kernel AFS filesystem use AF_RXRPC instead of the old RxRPC code.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Howells
2007-04-26 15:55:03 -07:00
committed by David S. Miller
parent 651350d10f
commit 08e0e7c82e
39 changed files with 4164 additions and 5393 deletions
Download Patch File Download Diff File Expand all files Collapse all files

108
fs/afs/mntpt.c
View File

@@ -18,10 +18,6 @@
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/mnt_namespace.h>
#include "super.h"
#include "cell.h"
#include "volume.h"
#include "vnode.h"
#include "internal.h"
@@ -30,6 +26,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct nameidata *nd);
static int afs_mntpt_open(struct inode *inode, struct file *file);
static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
static void afs_mntpt_expiry_timed_out(struct work_struct *work);
const struct file_operations afs_mntpt_file_operations = {
.open = afs_mntpt_open,
@@ -43,16 +40,9 @@ const struct inode_operations afs_mntpt_inode_operations = {
};
static LIST_HEAD(afs_vfsmounts);
static DECLARE_DELAYED_WORK(afs_mntpt_expiry_timer, afs_mntpt_expiry_timed_out);
static void afs_mntpt_expiry_timed_out(struct afs_timer *timer);
struct afs_timer_ops afs_mntpt_expiry_timer_ops = {
.timed_out = afs_mntpt_expiry_timed_out,
};
struct afs_timer afs_mntpt_expiry_timer;
unsigned long afs_mntpt_expiry_timeout = 20;
unsigned long afs_mntpt_expiry_timeout = 10 * 60;
/*
* check a symbolic link to see whether it actually encodes a mountpoint
@@ -84,7 +74,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode)
/* examine the symlink's contents */
size = vnode->status.size;
_debug("symlink to %*.*s", size, (int) size, buf);
_debug("symlink to %*.*s", (int) size, (int) size, buf);
if (size > 2 &&
(buf[0] == '%' || buf[0] == '#') &&
@@ -92,7 +82,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode)
) {
_debug("symlink is a mountpoint");
spin_lock(&vnode->lock);
vnode->flags |= AFS_VNODE_MOUNTPOINT;
set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags);
spin_unlock(&vnode->lock);
}
@@ -113,7 +103,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
struct nameidata *nd)
{
kenter("%p,%p{%p{%s},%s}",
_enter("%p,%p{%p{%s},%s}",
dir,
dentry,
dentry->d_parent,
@@ -129,7 +119,7 @@ static struct dentry *afs_mntpt_lookup(struct inode *dir,
*/
static int afs_mntpt_open(struct inode *inode, struct file *file)
{
kenter("%p,%p{%p{%s},%s}",
_enter("%p,%p{%p{%s},%s}",
inode, file,
file->f_path.dentry->d_parent,
file->f_path.dentry->d_parent ?
@@ -152,7 +142,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
char *buf, *devname = NULL, *options = NULL;
int ret;
kenter("{%s}", mntpt->d_name.name);
_enter("{%s}", mntpt->d_name.name);
BUG_ON(!mntpt->d_inode);
@@ -196,13 +186,13 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
strcat(options, ",rwpath");
/* try and do the mount */
kdebug("--- attempting mount %s -o %s ---", devname, options);
_debug("--- attempting mount %s -o %s ---", devname, options);
mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options);
kdebug("--- mount result %p ---", mnt);
_debug("--- mount result %p ---", mnt);
free_page((unsigned long) devname);
free_page((unsigned long) options);
kleave(" = %p", mnt);
_leave(" = %p", mnt);
return mnt;
error:
@@ -212,7 +202,7 @@ error:
free_page((unsigned long) devname);
if (options)
free_page((unsigned long) options);
kleave(" = %d", ret);
_leave(" = %d", ret);
return ERR_PTR(ret);
}
@@ -222,51 +212,81 @@ error:
static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct vfsmount *newmnt;
struct dentry *old_dentry;
int err;
kenter("%p{%s},{%s:%p{%s}}",
_enter("%p{%s},{%s:%p{%s}}",
dentry,
dentry->d_name.name,
nd->mnt->mnt_devname,
dentry,
nd->dentry->d_name.name);
newmnt = afs_mntpt_do_automount(dentry);
dput(nd->dentry);
nd->dentry = dget(dentry);
newmnt = afs_mntpt_do_automount(nd->dentry);
if (IS_ERR(newmnt)) {
path_release(nd);
return (void *)newmnt;
}
old_dentry = nd->dentry;
nd->dentry = dentry;
err = do_add_mount(newmnt, nd, 0, &afs_vfsmounts);
nd->dentry = old_dentry;
path_release(nd);
if (!err) {
mntget(newmnt);
mntget(newmnt);
err = do_add_mount(newmnt, nd, MNT_SHRINKABLE, &afs_vfsmounts);
switch (err) {
case 0:
path_release(nd);
nd->mnt = newmnt;
dget(newmnt->mnt_root);
nd->dentry = newmnt->mnt_root;
nd->dentry = dget(newmnt->mnt_root);
schedule_delayed_work(&afs_mntpt_expiry_timer,
afs_mntpt_expiry_timeout * HZ);
break;
case -EBUSY:
/* someone else made a mount here whilst we were busy */
while (d_mountpoint(nd->dentry) &&
follow_down(&nd->mnt, &nd->dentry))
;
err = 0;
default:
mntput(newmnt);
break;
}
kleave(" = %d", err);
_leave(" = %d", err);
return ERR_PTR(err);
}
/*
* handle mountpoint expiry timer going off
*/
static void afs_mntpt_expiry_timed_out(struct afs_timer *timer)
static void afs_mntpt_expiry_timed_out(struct work_struct *work)
{
kenter("");
_enter("");
mark_mounts_for_expiry(&afs_vfsmounts);
if (!list_empty(&afs_vfsmounts)) {
mark_mounts_for_expiry(&afs_vfsmounts);
schedule_delayed_work(&afs_mntpt_expiry_timer,
afs_mntpt_expiry_timeout * HZ);
}
afs_kafstimod_add_timer(&afs_mntpt_expiry_timer,
afs_mntpt_expiry_timeout * HZ);
kleave("");
_leave("");
}
/*
* kill the AFS mountpoint timer if it's still running
*/
void afs_mntpt_kill_timer(void)
{
_enter("");
ASSERT(list_empty(&afs_vfsmounts));
cancel_delayed_work(&afs_mntpt_expiry_timer);
flush_scheduled_work();
}
/*
* begin unmount by attempting to remove all automounted mountpoints we added
*/
void afs_umount_begin(struct vfsmount *vfsmnt, int flags)
{
shrink_submounts(vfsmnt, &afs_vfsmounts);
}