From: Coywolf Qi Hunt <qiyong@fc-cn.com>
Date: Tue, 6 Sep 2005 22:18:17 +0000 (-0700)
Subject: [PATCH] alloc_buffer_head() and free_buffer_head() cleanup
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=736c7b808f38f3bb72941345e11e236ec65dec3d;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] alloc_buffer_head() and free_buffer_head() cleanup

Signed-off-by: Coywolf Qi Hunt <qiyong@fc-cn.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/buffer.c b/fs/buffer.c
index 6a25d7df89b1..a92b81403552 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3046,10 +3046,9 @@ struct buffer_head *alloc_buffer_head(unsigned int __nocast gfp_flags)
 {
 	struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags);
 	if (ret) {
-		preempt_disable();
-		__get_cpu_var(bh_accounting).nr++;
+		get_cpu_var(bh_accounting).nr++;
 		recalc_bh_state();
-		preempt_enable();
+		put_cpu_var(bh_accounting);
 	}
 	return ret;
 }
@@ -3059,10 +3058,9 @@ void free_buffer_head(struct buffer_head *bh)
 {
 	BUG_ON(!list_empty(&bh->b_assoc_buffers));
 	kmem_cache_free(bh_cachep, bh);
-	preempt_disable();
-	__get_cpu_var(bh_accounting).nr--;
+	get_cpu_var(bh_accounting).nr--;
 	recalc_bh_state();
-	preempt_enable();
+	put_cpu_var(bh_accounting);
 }
 EXPORT_SYMBOL(free_buffer_head);