btrfs: handle record_root_in_trans failure in btrfs_record_root_in_trans

record_root_in_trans can fail currently, handle this failure properly.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 6362549..0b72fe0 100644 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -492,6 +492,7 @@ int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
                               struct btrfs_root *root)
 {
        struct btrfs_fs_info *fs_info = root->fs_info;
+       int ret;
 
        if (!test_bit(BTRFS_ROOT_SHAREABLE, &root->state))
                return 0;
@@ -506,10 +507,10 @@ int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
                return 0;
 
        mutex_lock(&fs_info->reloc_mutex);
-       record_root_in_trans(trans, root, 0);
+       ret = record_root_in_trans(trans, root, 0);
        mutex_unlock(&fs_info->reloc_mutex);
 
-       return 0;
+       return ret;
 }
 
 static inline int is_transaction_blocked(struct btrfs_transaction *trans)