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| author | Christoph Hellwig <hch@lst.de> | 2009-05-05 15:41:25 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:36:06 -0400 |
| commit | 5af7926ff33b68b3ba46531471c6e0564b285efc (patch) | |
| tree | a25266f9db482ce9dd8e663148ffb0f1a524bd83 /fs/reiserfs | |
| parent | e5004753388dcf5e1b8a52ac0ab807d232340fbb (diff) | |
| download | linux-stable-5af7926ff33b68b3ba46531471c6e0564b285efc.tar.gz linux-stable-5af7926ff33b68b3ba46531471c6e0564b285efc.tar.bz2 linux-stable-5af7926ff33b68b3ba46531471c6e0564b285efc.zip | |
enforce ->sync_fs is only called for rw superblock
Make sure a superblock really is writeable by checking MS_RDONLY
under s_umount. sync_filesystems needed some re-arragement for
that, but all but one sync_filesystem caller had the correct locking
already so that we could add that check there. cachefiles grew
s_umount locking.
I've also added a WARN_ON to sync_filesystem to assert this for
future callers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/reiserfs')
| -rw-r--r-- | fs/reiserfs/super.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 1b52daa351c5..3da0401c0a96 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -64,18 +64,15 @@ static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf); static int reiserfs_sync_fs(struct super_block *s, int wait) { - if (!(s->s_flags & MS_RDONLY)) { - struct reiserfs_transaction_handle th; - reiserfs_write_lock(s); - if (!journal_begin(&th, s, 1)) - if (!journal_end_sync(&th, s, 1)) - reiserfs_flush_old_commits(s); - s->s_dirt = 0; /* Even if it's not true. - * We'll loop forever in sync_supers otherwise */ - reiserfs_write_unlock(s); - } else { - s->s_dirt = 0; - } + struct reiserfs_transaction_handle th; + + reiserfs_write_lock(s); + if (!journal_begin(&th, s, 1)) + if (!journal_end_sync(&th, s, 1)) + reiserfs_flush_old_commits(s); + s->s_dirt = 0; /* Even if it's not true. + * We'll loop forever in sync_supers otherwise */ + reiserfs_write_unlock(s); return 0; } |