From: Jan Kara <jack@suse.cz>
Date: Mon, 4 Mar 2013 05:43:32 +0000 (-0500)
Subject: ext4: remove unnecessary wait for extent conversion in ext4_fallocate()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=de99fcce1da7933a90198b80a2e896754ea3bdc8;p=openwrt%2Fstaging%2Fblogic.git

ext4: remove unnecessary wait for extent conversion in ext4_fallocate()

Now that we don't merge uninitialized extents anymore,
ext4_fallocate() is free to operate on the inode while there are still
some extent conversions pending - it won't disturb them in any way.

Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Reviewed-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 265cb0e50c51..25c86aaa38d6 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4392,8 +4392,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 	if (len <= EXT_UNINIT_MAX_LEN << blkbits)
 		flags |= EXT4_GET_BLOCKS_NO_NORMALIZE;
 
-	/* Prevent race condition between unwritten */
-	ext4_flush_unwritten_io(inode);
 retry:
 	while (ret >= 0 && ret < max_blocks) {
 		map.m_lblk = map.m_lblk + ret;