From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 12 Mar 2021 15:25:00 -0500
Subject: btrfs: check record_root_in_trans related failures in
 select_reloc_root
Git-commit: 92de551b837650568486b94b67f4168e4c6cc68a
Patch-mainline: v5.13-rc1
References: bsc#1187833

We will record the fs root or the reloc root in the trans in
select_reloc_root.  These will actually return errors in the following
patches, so check their return value here and return it up the stack.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/relocation.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2675,6 +2675,7 @@ struct btrfs_root *select_reloc_root(str
 	struct backref_node *next;
 	struct btrfs_root *root;
 	int index = 0;
+	int ret;
 
 	next = node;
 	while (1) {
@@ -2710,11 +2711,15 @@ struct btrfs_root *select_reloc_root(str
 		}
 
 		if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
-			record_reloc_root_in_trans(trans, root);
+			ret = record_reloc_root_in_trans(trans, root);
+			if (ret)
+				return ERR_PTR(ret);
 			break;
 		}
 
-		btrfs_record_root_in_trans(trans, root);
+		ret = btrfs_record_root_in_trans(trans, root);
+		if (ret)
+			return ERR_PTR(ret);
 		root = root->reloc_root;
 
 		if (next->new_bytenr != root->node->start) {