linux-kernel - [PATCH] fs/buffer.c: change buffer_busy() to use logical-OR expression

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Date:	Sun, 24 Oct 2010 02:06:15 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Alexander Viro <viro@...iv.linux.org.uk>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] fs/buffer.c: change buffer_busy() to use logical-OR expression

Convert bitwise-OR operator to logical-OR in favor of short-circuit
evaluation. The end result would be same.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
---
 fs/buffer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index f5755f7..4362e77 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3069,7 +3069,7 @@ EXPORT_SYMBOL(sync_dirty_buffer);
  */
 static inline int buffer_busy(struct buffer_head *bh)
 {
-	return atomic_read(&bh->b_count) |
+	return atomic_read(&bh->b_count) ||
 		(bh->b_state & ((1 << BH_Dirty) | (1 << BH_Lock)));
 }
 
-- 
1.7.0.4

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