From: Yan Hong <clouds.yan@gmail.com>
Date: Wed, 12 Dec 2012 21:52:16 +0000 (-0800)
Subject: fs/buffer.c: remove redundant initialization in alloc_page_buffers()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=02c0ab684fc41bc13ba8d5ad89b0dc73b092fa08;p=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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/buffer.c b/fs/buffer.c
index 9083e528e3c9a..c017a2dfb9097 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 */