From 543eabd5e1929bc73e22b279aa911eb01447535f Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Wed, 5 Dec 2012 10:52:48 +0000 Subject: [PATCH] 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: Miao Xie Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 657f16d..bf60958 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -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); -- 2.7.4