diff options
| 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 /mm/backing-dev.c | |
| parent | e5004753388dcf5e1b8a52ac0ab807d232340fbb (diff) | |
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 'mm/backing-dev.c')
0 files changed, 0 insertions, 0 deletions