From 3377f843cf80e33d63f1a3ded67fd129a298c6b0 Mon Sep 17 00:00:00 2001
From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Thu, 16 Apr 2015 12:46:45 -0700
Subject: [PATCH] nilfs2: fix gcc warning at nilfs_checkpoint_is_mounted()
Fix the following build warning:
fs/nilfs2/super.c: In function 'nilfs_checkpoint_is_mounted':
fs/nilfs2/super.c:1023:10: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if (cno < 0 || cno > nilfs->ns_cno)
^
This warning indicates that the comparision "cno < 0" is useless because
variable "cno" has an unsigned integer type "__u64".
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/nilfs2/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 5bc2a1cf73c35..c1725f20a9d1d 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1020,7 +1020,7 @@ int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno)
struct dentry *dentry;
int ret;
- if (cno < 0 || cno > nilfs->ns_cno)
+ if (cno > nilfs->ns_cno)
return false;
if (cno >= nilfs_last_cno(nilfs))
--
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