Re: [PATCH] mm: Move check for SHRINKER_NUMA_AWARE to do_shrink_slab()

[David Howells]

David Howells <dhowells@xxxxxxxxxx> wrote:

> But!  I'm not sure why the reproducer works at all because the umount2() call
> is *after* the chroot, so should fail on ENOENT before it even gets that
> far.

No, it shouldn't.  It did chroot() not chdir().

> In fact, umount2() can be called multiple times, apparently successfully, and
> doesn't actually unmount anything.

Okay, because it chroot'd into the directory.  Should it return EBUSY though?

David