From: Zygo Blaxell <zblaxell@thirteen.furryterror.org>
Date: Tue, 2 Aug 2016 00:58:21 +0000 (-0400)
Subject: zygo: btrfs: more snapshot delete instrumentation
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=476e123bbcd3ca9ae248a2b1959b80ab98af32aa;p=linux

zygo: btrfs: more snapshot delete instrumentation
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 37c983a791727..adcbfa8713e57 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8986,12 +8986,14 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
 		ret = walk_down_tree(trans, root, path, wc);
 		if (ret < 0) {
 			err = ret;
+			printk(KERN_ERR "%s:%d: walk_down_tree ret=%d\n", __FUNCTION__, __LINE__, ret);
 			break;
 		}
 
 		ret = walk_up_tree(trans, root, path, wc, BTRFS_MAX_LEVEL);
 		if (ret < 0) {
 			err = ret;
+			printk(KERN_ERR "%s:%d: walk_up_tree ret=%d\n", __FUNCTION__, __LINE__, ret);
 			break;
 		}
 
@@ -9039,8 +9041,10 @@ int btrfs_drop_snapshot(struct btrfs_root *root,
 		}
 	}
 	btrfs_release_path(path);
-	if (err)
+	if (err) {
+		printk(KERN_ERR "%s:%d: going to out_end_trans ret=%d\n", __FUNCTION__, __LINE__, ret);
 		goto out_end_trans;
+	}
 
 	ret = btrfs_del_root(trans, tree_root, &root->root_key);
 	if (ret) {