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Message-ID: <1442848714-6784-1-git-send-email-vincent.stehle@freescale.com>
Date: Mon, 21 Sep 2015 17:18:34 +0200
From: Vincent Stehlé <vincent.stehle@...escale.com>
To: <linux-fsdevel@...r.kernel.org>
CC: <linux-kernel@...r.kernel.org>,
Vincent Stehlé <vincent.stehle@...escale.com>,
Oleg Nesterov <oleg@...hat.com>,
"Alexander Viro" <viro@...iv.linux.org.uk>, <trivial@...nel.org>
Subject: [PATCH] fs/super.c: use && instead of & for warn_on condition
This fixes the following sparse warning:
fs/super.c:1202:9: warning: dubious: x & !y
Bitwise and logical and are equivalent here, but logical was intended.
The generated code is identical, with and without CONFIG_LOCKDEP.
Signed-off-by: Vincent Stehlé <vincent.stehle@...escale.com>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Alexander Viro <viro@...iv.linux.org.uk>
Cc: trivial@...nel.org
---
fs/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/super.c b/fs/super.c
index 954aeb8..7ea56de 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1199,7 +1199,7 @@ int __sb_start_write(struct super_block *sb, int level, bool wait)
else
ret = percpu_down_read_trylock(sb->s_writers.rw_sem + level-1);
- WARN_ON(force_trylock & !ret);
+ WARN_ON(force_trylock && !ret);
return ret;
}
EXPORT_SYMBOL(__sb_start_write);
--
2.5.1
--
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