[PATCH 2/2] UBIFS: add a log overlap assertion

[Artem Bityutskiy]

From: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>

Add an assertion which checkes that the head of the log never overlaps with the
tail of the log.

Suggested-by: hujianyang <hujianyang at huawei.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
---
 fs/ubifs/misc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h
index ee7cb5e..81bbf79 100644
--- a/fs/ubifs/misc.h
+++ b/fs/ubifs/misc.h
@@ -297,6 +297,7 @@ static inline int ubifs_next_log_lnum(const struct ubifs_info *c, int lnum)
 	if (lnum > c->log_last)
 		lnum = UBIFS_LOG_LNUM;
 
+	ubifs_assert(lnum != c->ltail_lnum);
 	return lnum;
 }
 
-- 
1.9.3