Gitweb: http://git.kernel.org/linus/8044f7f468469c80031611206d554f86fcdfe704
Commit: 8044f7f468469c80031611206d554f86fcdfe704
Parent: e1da0222753a2322d76c97fc02396fb83143c7ac
Author: Jens Axboe <jens.axboe@oracle.com>
AuthorDate: Thu Apr 22 12:09:48 2010 +0200
Committer: Jens Axboe <jens.axboe@oracle.com>
CommitDate: Thu Apr 22 12:09:48 2010 +0200
cifs: add bdi backing to mount session
This ensures that dirty data gets flushed properly.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
fs/cifs/cifs_fs_sb.h | 3 +++
fs/cifs/cifsfs.c | 10 ++++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 4797787..246a167 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -18,6 +18,8 @@
#ifndef _CIFS_FS_SB_H
#define _CIFS_FS_SB_H
+#include <linux/backing-dev.h>
+
#define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */
#define CIFS_MOUNT_SET_UID 2 /* set current's euid in create etc. */
#define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */
@@ -50,5 +52,6 @@ struct cifs_sb_info {
#ifdef CONFIG_CIFS_DFS_UPCALL
char *mountdata; /* mount options received at mount time */
#endif
+ struct backing_dev_info bdi;
};
#endif /* _CIFS_FS_SB_H */
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index ded66be..ad235d6 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -103,6 +103,12 @@ cifs_read_super(struct super_block *sb, void *data,
if (cifs_sb == NULL)
return -ENOMEM;
+ rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY);
+ if (rc) {
+ kfree(cifs_sb);
+ return rc;
+ }
+
#ifdef CONFIG_CIFS_DFS_UPCALL
/* copy mount params to sb for use in submounts */
/* BB: should we move this after the mount so we
@@ -115,6 +121,7 @@ cifs_read_super(struct super_block *sb, void *data,
int len = strlen(data);
cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
if (cifs_sb->mountdata == NULL) {
+ bdi_destroy(&cifs_sb->bdi);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
return -ENOMEM;
@@ -135,6 +142,7 @@ cifs_read_super(struct super_block *sb, void *data,
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
+ sb->s_bdi = &cifs_sb->bdi;
/* if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
sb->s_blocksize =
cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
@@ -183,6 +191,7 @@ out_mount_failed:
}
#endif
unload_nls(cifs_sb->local_nls);
+ bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb);
}
return rc;
@@ -214,6 +223,7 @@ cifs_put_super(struct super_block *sb)
#endif
unload_nls(cifs_sb->local_nls);
+ bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb);
unlock_kernel();
--
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