Commit 804ca127 authored Dec 12, 2014 by Dongsheng Yang Committed by Chris Mason Apr 13, 2015

Btrfs: qgroup: free reserved in exceeding quota.



When we exceed quota limit in writing, we will free
some reserved extent when we need to drop but not free
account in qgroup. It means, each time we exceed quota
in writing, there will be some remain space in qg->reserved
we can not use any more. If things go on like this, the
all space will be ate up.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

parent 4087cf24

fs/btrfs/extent-tree.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -5475,8 +5475,11 @@ out_fail:
		to_free = 0;
		}
		spin_unlock(&BTRFS_I(inode)->lock);
		if (dropped)
		if (dropped) {
		if (root->fs_info->quota_enabled)
		btrfs_qgroup_free(root, dropped * root->nodesize);
		to_free += btrfs_calc_trans_metadata_size(root, dropped);
		}

		if (to_free) {
		btrfs_block_rsv_release(root, block_rsv, to_free);

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