On Wed, Apr 05, 2017 at 11:53:41AM +0100, David Howells wrote: > I've added a test to xfstests that exercises the new statx syscall. However, > it fails on btrfs: > > Test statx on a directory > +[!] stx_nlink differs, 1 != 2 > +Failed > +stat_test failed > > because a new directory it creates has an nlink of 1, not 2. Is this a case > of my making an incorrect assumption or is it an fs bug? Afaik nlink == 1 means that there's no accounting of subdirectories, and it's a valid value. The 'find' utility can use nlink to optimize directory traversal but otherwise I'm not aware of other usage. All directories in btrfs have nlink == 1.
