From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752852AbbJWNqH (ORCPT ); Fri, 23 Oct 2015 09:46:07 -0400 Received: from mx2.suse.de ([195.135.220.15]:49442 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752679AbbJWNqE (ORCPT ); Fri, 23 Oct 2015 09:46:04 -0400 Date: Fri, 23 Oct 2015 06:45:53 -0700 From: Davidlohr Bueso To: Mike Kravetz Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Dave Hansen , Naoya Horiguchi , Hugh Dickins , Andrew Morton Subject: Re: [PATCH] mm/hugetlb: i_mmap_lock_write before unmapping in remove_inode_hugepages Message-ID: <20151023134553.GE27292@linux-uzut.site> Mail-Followup-To: Mike Kravetz , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Dave Hansen , Naoya Horiguchi , Hugh Dickins , Andrew Morton References: <1445478147-29782-1-git-send-email-mike.kravetz@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <1445478147-29782-1-git-send-email-mike.kravetz@oracle.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 21 Oct 2015, Mike Kravetz wrote: >Code was added to remove_inode_hugepages that will unmap a page if >it is mapped. i_mmap_lock_write() must be taken during the call >to hugetlb_vmdelete_list(). This is to prevent mappings(vmas) from >being added or deleted while the list of vmas is being examined. ^^^^ interval-tree. > >Signed-off-by: Mike Kravetz Reviewed-by: Davidlohr Bueso