Btrfs: Various small fixes.

[linux-2.6-block.git] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a6a418b6894b10ac248c821537704fb9b9092149..eb4b357d05e1cff0178990c8d43e2609d9cfa64a 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -449,7 +449,9 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
                s->s_flags |= MS_ACTIVE;
        }
 
+       mutex_lock(&s->s_root->d_inode->i_mutex);
        root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name));
+       mutex_unlock(&s->s_root->d_inode->i_mutex);
        if (IS_ERR(root)) {
                up_write(&s->s_umount);
                deactivate_super(s);