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Btrfs: don't wait for the completion of all the ordered extents

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It is very likely that there are lots of ordered extents in the filesytem,
if we wait for the completion of all of them when we want to reclaim some
space for the metadata space reservation, we would be blocked for a long
time. The performance would drop down suddenly for a long time.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Miao Xie 2013-11-04 23:13:25 +08:00 • committed by Chris Mason
parent 9f3a074d10
commit b02441999e
8 changed files with 31 additions and 18 deletions
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4
fs/btrfs/dev-replace.c
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@ -391,7 +391,7 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR;
btrfs_dev_replace_unlock(dev_replace);
btrfs_wait_all_ordered_extents(root->fs_info);
btrfs_wait_ordered_roots(root->fs_info, -1);
/* force writing the updated state information to disk */
trans = btrfs_start_transaction(root, 0);
@ -466,7 +466,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
mutex_unlock(&dev_replace->lock_finishing_cancel_unmount);
return ret;
}
btrfs_wait_all_ordered_extents(root->fs_info);
btrfs_wait_ordered_roots(root->fs_info, -1);
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {