From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 8 Feb 2007 14:37:46 -0800 From: Andrew Morton Subject: Re: Drop PageReclaim() Message-Id: <20070208143746.79c000f5.akpm@linux-foundation.org> In-Reply-To: References: <20070208140338.971b3f53.akpm@linux-foundation.org> <20070208142431.eb81ae70.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Hugh Dickins , linux-mm@kvack.org List-ID: On Thu, 8 Feb 2007 14:26:48 -0800 (PST) Christoph Lameter wrote: > On Thu, 8 Feb 2007, Andrew Morton wrote: > > > > We have a mechanism to trigger events based on the end of writeback > > > (also triggered in end_page_writeback). > > > > Not sure what you're referring to there. > > smp_mb__after_clear_bit(); > wake_up_page(page, PG_writeback); > > > > But I guess we are not using it > > > because we do not have a process context? > > > > end_page_writeback() usually runs in hard IRQ context. > > Those sleeping on the page must have their own process context > to do so. You've lost me. I don't see what that sort of thing has to do with end_page_writeback() and rotate_reclaimable_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