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 9083e528e3c9a8d5876f230f70bc452ff9e5c70e..c017a2dfb9097e73837230d244ffb14f73dd0e1c 100644 (file)
--- 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 */