[PATCH] ext3: Wrong return value for EXT3_IOC_GROUP_ADD
This patch corrects the return value for the EXT3_IOC_GROUP_ADD in case it
fails due to the presence of multiple resizers at the filesystem.
The problem is a little bit more serious than a wrong return value in this
case, since the clause err=0 in the exit_journal path will lead to a call
to update_backups which in turns causes a NULL pointer dereference.
Signed-off-by: Glauber de Oliveira Costa <glommer@br.ibm.com>
Cc: "Stephen C. Tweedie" <sct@redhat.com>
Cc: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 1be78b4b..6104ad3 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -767,6 +767,7 @@
if (input->group != EXT3_SB(sb)->s_groups_count) {
ext3_warning(sb, __FUNCTION__,
"multiple resizers run on filesystem!\n");
+ err = -EBUSY;
goto exit_journal;
}