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reiserfs: fix synchronization of quota files in journal=data mode 

In journal=data mode, it is not enough to do write_inode_now() as done in
vfs_quota_on() to write all data to their final location (which is needed for
quota_read to work correctly).  Calling journal_end_sync() before calling
vfs_quota_on() does it's job because transactions are committed to the journal
and data marked as dirty in memory so write_inode_now() writes them to their
final locations.

Cc: <reiserfs-devel@vger.kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara 2008-07-25 01:46:36 -07:00 committed by Linus Torvalds
parent 895c23f8c3
commit 5d4f7fddf8
1 changed files with 21 additions and 9 deletions
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30
fs/reiserfs/super.c
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@ -2026,6 +2026,7 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
int err;
struct nameidata nd;
struct inode *inode;
struct reiserfs_transaction_handle th;
if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA)))
return -EINVAL;
@ -2053,17 +2054,28 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
}
mark_inode_dirty(inode);
}
/* Not journalling quota? No more tests needed... */
if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
!REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path, 0);
}
/* Quotafile not of fs root? */
if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
reiserfs_warning(sb,
/* Journaling quota? */
if (REISERFS_SB(sb)->s_qf_names[type]) {
/* Quotafile not of fs root? */
if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
reiserfs_warning(sb,
"reiserfs: Quota file not on filesystem root. "
"Journalled quota will not work.");
}
/*
* When we journal data on quota file, we have to flush journal to see
* all updates to the file when we bypass pagecache...
*/
if (reiserfs_file_data_log(inode)) {
/* Just start temporary transaction and finish it */
err = journal_begin(&th, sb, 1);
if (err)
return err;
err = journal_end_sync(&th, sb, 1);
if (err)
return err;
}
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path, 0);
}