From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 23 Apr 2008 10:50:33 -0700 (PDT) From: Christoph Lameter Subject: Re: Warning on memory offline (and possible in usual migration?) In-Reply-To: <20080423124425.5c80d3cf.kamezawa.hiroyu@jp.fujitsu.com> Message-ID: References: <20080414145806.c921c927.kamezawa.hiroyu@jp.fujitsu.com> <20080422045205.GH21993@wotan.suse.de> <20080422165608.7ab7026b.kamezawa.hiroyu@jp.fujitsu.com> <20080422094352.GB23770@wotan.suse.de> <20080423004804.GA14134@wotan.suse.de> <20080423114107.b8df779c.kamezawa.hiroyu@jp.fujitsu.com> <20080423025358.GA9751@wotan.suse.de> <20080423124425.5c80d3cf.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: Nick Piggin , "linux-mm@kvack.org" , Andrew Morton , GOTO List-ID: On Wed, 23 Apr 2008, KAMEZAWA Hiroyuki wrote: > In set_page_dirty_nobuffers()case , it just makes a page to be dirty. We can't > see whether a page is really up-to-date or not when PagePrivate(page) && > !PageUptodate(page). This is used for a page which contains some data > to be written out. (part of buffers contains data.) So its safe to migrate a !Uptodate page if it contains buffers? Note that the migration code reattaches the buffer to the new page in buffer_migrate_page(). -- 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