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afs: add bdi backing to mount session.

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This ensures that dirty data gets flushed properly.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2010-04-22 11:58:18 +02:00
parent 0ed07ddb56
commit e1da022275
3 changed files with 10 additions and 0 deletions
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2
fs/afs/internal.h
View File

@ -19,6 +19,7 @@
#include <linux/workqueue.h>
#include <linux/sched.h>
#include <linux/fscache.h>
#include <linux/backing-dev.h>
#include "afs.h"
#include "afs_vl.h"
@ -313,6 +314,7 @@ struct afs_volume {
unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
struct afs_server *servers[8]; /* servers on which volume resides (ordered) */
struct rw_semaphore server_sem; /* lock for accessing current server */
struct backing_dev_info bdi;
};
/*

1
fs/afs/super.c
View File

@ -311,6 +311,7 @@ static int afs_fill_super(struct super_block *sb, void *data)
sb->s_magic = AFS_FS_MAGIC;
sb->s_op = &afs_super_ops;
sb->s_fs_info = as;
sb->s_bdi = &as->volume->bdi;
/* allocate the root inode and dentry */
fid.vid = as->volume->vid;

7
fs/afs/volume.c
View File

@ -106,6 +106,10 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params)
volume->cell = params->cell;
volume->vid = vlocation->vldb.vid[params->type];
ret = bdi_setup_and_register(&volume->bdi, "afs", BDI_CAP_MAP_COPY);
if (ret)
goto error_bdi;
init_rwsem(&volume->server_sem);
/* look up all the applicable server records */
@ -151,6 +155,8 @@ error:
return ERR_PTR(ret);
error_discard:
bdi_destroy(&volume->bdi);
error_bdi:
up_write(&params->cell->vl_sem);
for (loop = volume->nservers - 1; loop >= 0; loop--)
@ -200,6 +206,7 @@ void afs_put_volume(struct afs_volume *volume)
for (loop = volume->nservers - 1; loop >= 0; loop--)
afs_put_server(volume->servers[loop]);
bdi_destroy(&volume->bdi);
kfree(volume);
_leave(" [destroyed]");