linux-ext4 - [PATCH] ext4: remove unnecessary operation in ext4_mb_normalize_group

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Message-ID: <ac8f92701003250754o682aa32dw9bb51f36f0fa433b@mail.gmail.com>
Date:	Thu, 25 Mar 2010 22:54:21 +0800
From:	jing zhang <zj.barak@...il.com>
To:	linux-ext4 <linux-ext4@...r.kernel.org>
Cc:	"Theodore Ts'o" <tytso@....edu>, Andreas Dilger <adilger@....com>,
	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>,
	"Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH] ext4: remove unnecessary operation in ext4_mb_normalize_group_request()

From: Jing Zhang <zj.barak@...il.com>

Date: Wed Mar 25  22:55:04   2010

Checking bug seems not at right place, and the function itself should
be inlined.

Cc: Theodore Ts'o <tytso@....edu>
Cc: Andreas Dilger <adilger@....com>
Cc: Dave Kleikamp <shaggy@...ux.vnet.ibm.com>
Cc: "Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>
Signed-off-by: Jing Zhang <zj.barak@...il.com>

---

--- linux-2.6.32/fs/ext4/mballoc.c	2009-12-03 11:51:22.000000000 +0800
+++ ext4_mm_leak/mballoc-10.c	2010-03-25 22:44:00.000000000 +0800
@@ -2786,9 +2786,7 @@ out_err:
 static void ext4_mb_normalize_group_request(struct ext4_allocation_context *ac)
 {
 	struct super_block *sb = ac->ac_sb;
-	struct ext4_locality_group *lg = ac->ac_lg;

-	BUG_ON(lg == NULL);
 	if (EXT4_SB(sb)->s_stripe)
 		ac->ac_g_ex.fe_len = EXT4_SB(sb)->s_stripe;
 	else
--
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