Commit d9b0218f authored by Liu Bo's avatar Liu Bo Committed by David Sterba
Browse files

Btrfs: fix a bug on overcommit stuff 



When overcommitting, we should check the sum of pinned space and
bytes for delayed item.

Signed-off-by: default avatarLiu Bo <liubo2009@cn.fujitsu.com>
parent 9d47c767

fs/btrfs/extent-tree.c

+4 −1
Original line number Diff line number Diff line
@@ -3611,12 +3611,15 @@ static int may_commit_transaction(struct btrfs_root *root, 
	if (space_info != delayed_rsv->space_info)

		return -ENOSPC;



	spin_lock(&space_info->lock);

	spin_lock(&delayed_rsv->lock);

	if (delayed_rsv->size < bytes) {

	if (space_info->bytes_pinned + delayed_rsv->size < bytes) {

		spin_unlock(&delayed_rsv->lock);

		spin_unlock(&space_info->lock);

		return -ENOSPC;

	}

	spin_unlock(&delayed_rsv->lock);

	spin_unlock(&space_info->lock);



commit:

	trans = btrfs_join_transaction(root);