From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="iso-8859-1" From: Daniel Phillips Subject: Re: [RFC] Page table sharing Date: Tue, 19 Feb 2002 02:29:29 +0100 References: In-Reply-To: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel , Linus Torvalds Cc: Hugh Dickins , dmccr@us.ibm.com, Kernel Mailing List , linux-mm@kvack.org, Robert Love , mingo@redhat.com, Andrew Morton , manfred@colorfullife.com, wli@holomorphy.com List-ID: On February 19, 2002 02:22 am, Rik van Riel wrote: > On Mon, 18 Feb 2002, Linus Torvalds wrote: > > On Tue, 19 Feb 2002, Daniel Phillips wrote: > > > > > > Thanks, here it is again. > > > > Daniel, there's something wrong in the locking. > > > Does anybody see any reason why this doesn't work totally without the > > lock? > > We'll need protection from the swapout code. It would be > embarassing if the page fault handler would run for one > mm while kswapd was holding the page_table_lock for another > mm. > > I'm not sure how the page_table_share_lock is supposed > to fix that one, though. It doesn't, at present. This needs to be addressed. -- Daniel -- 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/