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authorAmir Goldstein <amir73il@gmail.com>2011-02-26 23:40:19 +0300
committerJan Kara <jack@suse.cz>2011-02-28 23:55:58 +0300
commitce654b37f87980d95f339080e4c3bdb2370bdf22 (patch)
treed1f1f69bd92a0da1b77ee5748f3abe95dd832c49 /fs/ext3
parent03885ac3c79ab7f3f4a8e502486be2ea6c85c3e3 (diff)
downloadlinux-ce654b37f87980d95f339080e4c3bdb2370bdf22.tar.xz
ext3: skip orphan cleanup on rocompat fs
Orphan cleanup is currently executed even if the file system has some number of unknown ROCOMPAT features, which deletes inodes and frees blocks, which could be very bad for some RO_COMPAT features. This patch skips the orphan cleanup if it contains readonly compatible features not known by this ext3 implementation, which would prevent the fs from being mounted (or remounted) readwrite. Signed-off-by: Amir Goldstein <amir73il@users.sf.net> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/super.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 85c8cc8f2473..0d62f29f213a 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -1464,6 +1464,13 @@ static void ext3_orphan_cleanup (struct super_block * sb,
return;
}
+ /* Check if feature set allows readwrite operations */
+ if (EXT3_HAS_RO_COMPAT_FEATURE(sb, ~EXT3_FEATURE_RO_COMPAT_SUPP)) {
+ ext3_msg(sb, KERN_INFO, "Skipping orphan cleanup due to "
+ "unknown ROCOMPAT features");
+ return;
+ }
+
if (EXT3_SB(sb)->s_mount_state & EXT3_ERROR_FS) {
if (es->s_last_orphan)
jbd_debug(1, "Errors on filesystem, "