tree 00a2c8aaa390e5c66ab4ad7eb86b546fbf138385
parent 50a876bcea6aeced0e268ab233127e6528205c75
author David Howells <dhowells@redhat.com> 1340625318 +0100
committer chrmhoffmann <chrmhoffmann@gmail.com> 1532289024 +0200

VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors

copy_tree() can theoretically fail in a case other than ENOMEM, but always
returns NULL which is interpreted by callers as -ENOMEM.  Change it to return
an explicit error.

Also change clone_mnt() for consistency and because union mounts will add new
error cases.

Thanks to Andreas Gruenbacher <agruen@suse.de> for a bug fix.
[AV: folded braino fix by Dan Carpenter]

Original-author: Valerie Aurora <vaurora@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Valerie Aurora <valerie.aurora@gmail.com>
Cc: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
(cherry picked from commit be34d1a3bc4b6f357a49acb55ae870c81337e4f0)
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>

Change-Id: I82a041ca6b52cf3d8a255d1733a5deeafce80625