path: root/fs/ubifs/replay.c
diff options
authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-09-19 18:34:26 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-09-19 21:07:58 +0300
commit2ef13294d29bcfb306e0d360f1b97f37b647b0c0 (patch)
tree877e1ece00c14de0f0d79e86b6480d284d309216 /fs/ubifs/replay.c
parent2680d722bf2c5f75225dd9acb3ec9e5a9e2652f4 (diff)
UBIFS: introduce new flags for RO mounts
Commit 2fde99cb55fb9d9b88180512a5e8a5d939d27fec "UBIFS: mark VFS SB RO too" introduced regression. This commit made UBIFS set the 'MS_RDONLY' flag in the VFS superblock when it switches to R/O mode due to an error. This was done to make VFS show the R/O UBIFS flag in /proc/mounts. However, several places in UBIFS relied on the 'MS_RDONLY' flag and assume this flag can only change when we re-mount. For example, 'ubifs_put_super()'. This patch introduces new UBIFS flag - 'c->ro_mount' which changes only when we re-mount, and preserves the way UBIFS was originally mounted (R/W or R/O). This allows us to de-initialize UBIFS cleanly in 'ubifs_put_super()'. This patch also changes all 'ubifs_assert(!c->ro_media)' assertions to 'ubifs_assert(!c->ro_media && !c->ro_mount)', because we never should write anything if the FS was mounter R/O. All the places where we test for 'MS_RDONLY' flag in the VFS SB were changed and now we test the 'c->ro_mount' flag instead, because it preserves the original UBIFS mount type, unlike the 'MS_RDONLY' flag. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/replay.c')
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index 5c2d6d759a3..730598cf634 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -627,8 +627,7 @@ static int replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead,
ubifs_assert(sleb->endpt - offs >= used);
ubifs_assert(sleb->endpt % c->min_io_size == 0);
- if (sleb->endpt + c->min_io_size <= c->leb_size &&
- !(c->vfs_sb->s_flags & MS_RDONLY))
+ if (sleb->endpt + c->min_io_size <= c->leb_size && !c->ro_mount)
err = ubifs_wbuf_seek_nolock(&c->jheads[jhead].wbuf, lnum,
sleb->endpt, UBI_SHORTTERM);