From: Yan Hong <clouds.yan@gmail.com>
Date: Thu, 29 Nov 2012 03:18:12 +0000 (+1100)
Subject: fs/buffer.c: remove redundant initialization in alloc_page_buffers()
X-Git-Tag: next-20121205~1^2~224
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=add96c71588eef3e407e953160f97f5bad1a66ec;p=karo-tx-linux.git

fs/buffer.c: remove redundant initialization in alloc_page_buffers()

buffer_head comes from kmem_cache_zalloc(), no need to zero its fields.

Signed-off-by: Yan Hong <clouds.yan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/buffer.c b/fs/buffer.c
index 2ae630a9a4ca..70ed4d8c023b 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -849,13 +849,10 @@ try_again:
 		if (!bh)
 			goto no_grow;
 
-		bh->b_bdev = NULL;
 		bh->b_this_page = head;
 		bh->b_blocknr = -1;
 		head = bh;
 
-		bh->b_state = 0;
-		atomic_set(&bh->b_count, 0);
 		bh->b_size = size;
 
 		/* Link the buffer to its page */