From 200a5c17677e1ee8b78382046f3748c9f5816281 Mon Sep 17 00:00:00 2001
From: Jeff Mahoney <jeffm@suse.com>
Date: Mon, 3 Oct 2011 23:22:43 -0400
Subject: [PATCH] btrfs: find_and_setup_root error push-up
find_and_setup_root BUGs when it encounters an error from
btrfs_find_last_root, which can occur if a path can't be allocated.
This patch pushes it up to its callers where it is already handled.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/disk-io.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d52ec1155204c..155c4e35e5367 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1197,10 +1197,10 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
return 0;
}
-static int find_and_setup_root(struct btrfs_root *tree_root,
- struct btrfs_fs_info *fs_info,
- u64 objectid,
- struct btrfs_root *root)
+static int __must_check find_and_setup_root(struct btrfs_root *tree_root,
+ struct btrfs_fs_info *fs_info,
+ u64 objectid,
+ struct btrfs_root *root)
{
int ret;
u32 blocksize;
@@ -1213,7 +1213,8 @@ static int find_and_setup_root(struct btrfs_root *tree_root,
&root->root_item, &root->root_key);
if (ret > 0)
return -ENOENT;
- BUG_ON(ret);
+ else if (ret < 0)
+ return ret;
generation = btrfs_root_generation(&root->root_item);
blocksize = btrfs_level_size(root, btrfs_root_level(&root->root_item));
--
2.30.2