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: Liu Bo <liubo2009@cn.fujitsu.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 60bfe2d..dc083f5 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3611,12 +3611,15 @@
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);