---

yaml
---
r: 274654
b: refs/heads/master
c: 7e355b8
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 36ba022ac0b748dd543f43430b03198e899426c9
+refs/heads/master: 7e355b83efa80e5f5821591c13c17649594d82ac

trunk/fs/btrfs/extent-tree.c

@@ -3510,6 +3510,20 @@ static int reserve_metadata_bytes(struct btrfs_root *root,
 		u64 profile = btrfs_get_alloc_profile(root, 0);
 		u64 avail;
 
+		/*
+		 * If we have a lot of space that's pinned, don't bother doing
+		 * the overcommit dance yet and just commit the transaction.
+		 */
+		avail = (space_info->total_bytes - space_info->bytes_used) * 8;
+		do_div(avail, 10);
+		if (space_info->bytes_pinned >= avail && flush && !trans &&
+		    !committed) {
+			space_info->flush = 1;
+			flushing = true;
+			spin_unlock(&space_info->lock);
+			goto commit;
+		}
+
 		spin_lock(&root->fs_info->free_chunk_lock);
 		avail = root->fs_info->free_chunk_space;
 
@@ -3581,6 +3595,7 @@ static int reserve_metadata_bytes(struct btrfs_root *root,
 	if (trans)
 		goto out;
 
+commit:
 	ret = -ENOSPC;
 	if (committed)
 		goto out;