btrfs: allow idmapped getattr inode op

Enable btrfs_getattr() to handle idmapped mounts. This is just a matter
of passing down the mount's userns.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 04a37b750a179d0a1973f25b043efeaca3ea0252..04a30cab799d6e99a3aee4a8526396d3f63ad67e 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9288,7 +9288,7 @@ static int btrfs_getattr(struct user_namespace *mnt_userns,
                                  STATX_ATTR_IMMUTABLE |
                                  STATX_ATTR_NODUMP);
 
-       generic_fillattr(&init_user_ns, inode, stat);
+       generic_fillattr(mnt_userns, inode, stat);
        stat->dev = BTRFS_I(inode)->root->anon_dev;
 
        spin_lock(&BTRFS_I(inode)->lock);