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 <[email protected]> for a bug fix.
[AV: folded braino fix by Dan Carpenter]

Original-author: Valerie Aurora <[email protected]>
Signed-off-by: David Howells <[email protected]>
Cc: Valerie Aurora <[email protected]>
Cc: Andreas Gruenbacher <[email protected]>
Signed-off-by: Al Viro <[email protected]>

0 files changed, 0 insertions, 0 deletions