tree 3b1b1407e00abc154768dc2f5a684b0fcf0cbd1f
parent c97bfe4351771675963e02f34d31e206fd2d7150
author Abhijith Das <adas@redhat.com> 1196367234 -0600
committer Steven Whitehouse <swhiteho@redhat.com> 1201248498 +0000

[GFS2] patch to check for recursive lock requests in gfs2_rename code path

A certain scenario in the rename code path triggers a kernel BUG()
because it accidentally does recursive locking The first lock is
requested to unlink an already existing inode (replacing a file) and the
second lock is requested when the destination directory needs to alloc
some space. It is rare that these two
events happen during the same rename call, and even more rare that these
two instances try to lock the same rgrp. It is, however, possible.
https://bugzilla.redhat.com/show_bug.cgi?id=404711

Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>