From: Yongqiang Yang <xiaoqiangnk@gmail.com>
Date: Thu, 28 Jul 2011 00:40:18 +0000 (-0400)
Subject: ext4: remove lock_buffer in bclean() and setup_new_group_blocks()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e6075e984d100c12bb79267639c3f661d9788a67;p=openwrt%2Fstaging%2Fblogic.git

ext4: remove lock_buffer in bclean() and setup_new_group_blocks()

There is no need to lock the buffers since no one else should be
touching these buffers besides the file system.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 5b423f89efda..65e5cb6c094d 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -147,10 +147,8 @@ static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,
 		brelse(bh);
 		bh = ERR_PTR(err);
 	} else {
-		lock_buffer(bh);
 		memset(bh->b_data, 0, sb->s_blocksize);
 		set_buffer_uptodate(bh);
-		unlock_buffer(bh);
 	}
 
 	return bh;
@@ -229,10 +227,8 @@ static int setup_new_group_blocks(struct super_block *sb,
 			brelse(gdb);
 			goto exit_journal;
 		}
-		lock_buffer(gdb);
 		memcpy(gdb->b_data, sbi->s_group_desc[i]->b_data, gdb->b_size);
 		set_buffer_uptodate(gdb);
-		unlock_buffer(gdb);
 		err = ext4_handle_dirty_metadata(handle, NULL, gdb);
 		if (unlikely(err)) {
 			brelse(gdb);