[PATCH 3/4] UBIFS: do not read flash unnecessarily

[Artem Bityutskiy]

From: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>

This fix makes the 'dbg_check_old_index()' function return
immediately if debugging is disabled, instead of executing
incorrect 'goto out' which causes UBIFS to:

1. Allocate memory
2. Read the flash

On every commit. OK, we do not commit that often, but it is
still silly to do unneeded I/O anyway.

Credits to coverity for spotting this silly issue.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
Cc: stable at kernel.org
---
 fs/ubifs/commit.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index b148fbc..1bd01de 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -577,7 +577,7 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
 	size_t sz;
 
 	if (!(ubifs_chk_flags & UBIFS_CHK_OLD_IDX))
-		goto out;
+		return 0;
 
 	INIT_LIST_HEAD(&list);
 
-- 
1.7.2.3