linux-kernel - [PATCH] fs:ext4:hash.c: reduce one "if" comparison

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Date:	Sat,  1 Dec 2012 23:33:41 +0000
From:	Cong Ding <dinggnu@...il.com>
To:	Theodore Ts'o <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Cong Ding <dinggnu@...il.com>
Subject: [PATCH] fs:ext4:hash.c: reduce one "if" comparison

it is unnecessary to check i<4 after the loop. just do it before the break.

Signed-off-by: Cong Ding <dinggnu@...il.com>
---
 fs/ext4/hash.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c
index fa8e491..3d586f0 100644
--- a/fs/ext4/hash.c
+++ b/fs/ext4/hash.c
@@ -155,11 +155,11 @@ int ext4fs_dirhash(const char *name, int len, struct dx_hash_info *hinfo)
 	/* Check to see if the seed is all zero's */
 	if (hinfo->seed) {
 		for (i = 0; i < 4; i++) {
-			if (hinfo->seed[i])
+			if (hinfo->seed[i]) {
+				memcpy(buf, hinfo->seed, sizeof(buf));
 				break;
+			}
 		}
-		if (i < 4)
-			memcpy(buf, hinfo->seed, sizeof(buf));
 	}
 
 	switch (hinfo->hash_version) {
-- 
1.7.4.5

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