btrfs: remove redundant error check

While running btrfs_mksubvol(), d_really_is_positive() is called twice.
First in btrfs_mksubvol() and second inside btrfs_may_create().  So I
remove the first one.

Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 952172c..e65fdc8 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -844,10 +844,6 @@ static noinline int btrfs_mksubvol(struct path *parent,
        if (IS_ERR(dentry))
                goto out_unlock;
 
-       error = -EEXIST;
-       if (d_really_is_positive(dentry))
-               goto out_dput;
-
        error = btrfs_may_create(dir, dentry);
        if (error)
                goto out_dput;