From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id 415716B01EF for ; Tue, 13 Apr 2010 09:57:25 -0400 (EDT) Date: Tue, 13 Apr 2010 09:57:19 -0400 From: Vivek Goyal Subject: Re: [PATCH] memcg: update documentation v5 Message-ID: <20100413135718.GA4493@redhat.com> References: <20100408145800.ca90ad81.kamezawa.hiroyu@jp.fujitsu.com> <20100409134553.58096f80.kamezawa.hiroyu@jp.fujitsu.com> <20100409100430.7409c7c4.randy.dunlap@oracle.com> <20100413134553.7e2c4d3d.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100413134553.7e2c4d3d.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: Randy Dunlap , "linux-mm@kvack.org" , "akpm@linux-foundation.org" , "nishimura@mxp.nes.nec.co.jp" , "balbir@linux.vnet.ibm.com" , "linux-kernel@vger.kernel.org" List-ID: On Tue, Apr 13, 2010 at 01:45:53PM +0900, KAMEZAWA Hiroyuki wrote: [..] > -2. Locking > +2.6 Locking > > -The memory controller uses the following hierarchy > + lock_page_cgroup()/unlock_page_cgroup() should not be called under > + mapping->tree_lock. > Because I never understood very well, I will ask. Why lock_page_cgroup() should not be called under mapping->tree_lock? Thanks Vivek -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org