Btrfs: fix wrong search path initialization before searching tree root

To search tree root without transaction protection, we should neither search commit
root nor skip locking here, fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 84aed2f..aa60cbe 100644 (file)
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -2095,7 +2095,7 @@ static int send_subvol_begin(struct send_ctx *sctx)
        char *name = NULL;
        int namelen;
 
-       path = alloc_path_for_send();
+       path = btrfs_alloc_path();
        if (!path)
                return -ENOMEM;