AcoSail/kernel_optimize_test
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Btrfs: don't auto defrag a file when doing directIO

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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>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Miao Xie 2012-12-05 10:52:48 +00:00 committed by Chris Mason
parent fb57dc817c
commit 543eabd5e1
1 changed files with 0 additions and 3 deletions
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3
fs/btrfs/inode.c
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@ -5692,9 +5692,6 @@ static struct extent_map *btrfs_new_extent_direct(struct inode *inode,
if (IS_ERR(trans)) if (IS_ERR(trans))
return ERR_CAST(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; trans->block_rsv = &root->fs_info->delalloc_block_rsv;
alloc_hint = get_extent_allocation_hint(inode, start, len); alloc_hint = get_extent_allocation_hint(inode, start, len);