tree 406c6701e7a45a809114bfb925f474bdd20d252a
parent f27c9298fd717e1f7e63e314a7a85a3a7e77139d
author J. Bruce Fields <bfields@redhat.com> 1334776593 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1383974199 -0500

vfs: pull ext4's double-i_mutex-locking into common code

We want to do this elsewhere as well.

Also catch any attempts to use it for directories (where this ordering
would conflict with ancestor-first directory ordering in lock_rename).

Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Dave Chinner <david@fromorbit.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Acked-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>