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[1/6] Btrfs: don't auto defrag a file when doing directIO

Message ID 50BF2780.4080701@cn.fujitsu.com (mailing list archive)
State New, archived
Headers show

Commit Message

Miao Xie Dec. 5, 2012, 10:52 a.m. UTC 
If we runt the direct IO, we should not run auto defrag, because it may
introduce buffered IO vs direcIO problem, and make direct IO slow down.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
 fs/btrfs/inode.c | 3 ---
 1 file changed, 3 deletions(-)
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Patch

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5fc0990..b08e4b1 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5674,9 +5674,6 @@  static struct extent_map *btrfs_new_extent_direct(struct inode *inode,
 	if (IS_ERR(trans))
 		return ERR_CAST(trans);
 
-	if (start <= BTRFS_I(inode)->disk_i_size && len < 64 * 1024)
-		btrfs_add_inode_defrag(trans, inode);
-
 	trans->block_rsv = &root->fs_info->delalloc_block_rsv;
 
 	alloc_hint = get_extent_allocation_hint(inode, start, len);