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Commit 543eabd5 authored by Miao Xie's avatar Miao Xie Committed by Chris Mason
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Btrfs: don't auto defrag a file when doing directIO 



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: default avatarMiao Xie <miaox@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <chris.mason@fusionio.com>
parent fb57dc81

fs/btrfs/inode.c

+0 −3
Original line number Diff line number Diff line
@@ -5692,9 +5692,6 @@ 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);