From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933081AbbIYTDV (ORCPT ); Fri, 25 Sep 2015 15:03:21 -0400 Received: from gum.cmpxchg.org ([85.214.110.215]:47126 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932786AbbIYTDU (ORCPT ); Fri, 25 Sep 2015 15:03:20 -0400 Date: Fri, 25 Sep 2015 15:03:01 -0400 From: Johannes Weiner To: Mel Gorman Cc: Andrew Morton , Rik van Riel , Vlastimil Babka , David Rientjes , Joonsoo Kim , Michal Hocko , Linux-MM , LKML Subject: Re: [PATCH 06/10] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM Message-ID: <20150925190301.GB16359@cmpxchg.org> References: <1442832762-7247-1-git-send-email-mgorman@techsingularity.net> <1442832762-7247-7-git-send-email-mgorman@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1442832762-7247-7-git-send-email-mgorman@techsingularity.net> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 21, 2015 at 11:52:38AM +0100, Mel Gorman wrote: > __GFP_WAIT was used to signal that the caller was in atomic context and > could not sleep. Now it is possible to distinguish between true atomic > context and callers that are not willing to sleep. The latter should clear > __GFP_DIRECT_RECLAIM so kswapd will still wake. As clearing __GFP_WAIT > behaves differently, there is a risk that people will clear the wrong > flags. This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly indicate > what it does -- setting it allows all reclaim activity, clearing them > prevents it. > > Signed-off-by: Mel Gorman > Acked-by: Michal Hocko > Acked-by: Vlastimil Babka Acked-by: Johannes Weiner From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com [209.85.212.177]) by kanga.kvack.org (Postfix) with ESMTP id 78D7C6B0257 for ; Fri, 25 Sep 2015 15:03:20 -0400 (EDT) Received: by wicfx3 with SMTP id fx3so33981469wic.1 for ; Fri, 25 Sep 2015 12:03:20 -0700 (PDT) Received: from gum.cmpxchg.org (gum.cmpxchg.org. [85.214.110.215]) by mx.google.com with ESMTPS id 14si6412824wjx.23.2015.09.25.12.03.19 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 25 Sep 2015 12:03:19 -0700 (PDT) Date: Fri, 25 Sep 2015 15:03:01 -0400 From: Johannes Weiner Subject: Re: [PATCH 06/10] mm, page_alloc: Rename __GFP_WAIT to __GFP_RECLAIM Message-ID: <20150925190301.GB16359@cmpxchg.org> References: <1442832762-7247-1-git-send-email-mgorman@techsingularity.net> <1442832762-7247-7-git-send-email-mgorman@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1442832762-7247-7-git-send-email-mgorman@techsingularity.net> Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , Rik van Riel , Vlastimil Babka , David Rientjes , Joonsoo Kim , Michal Hocko , Linux-MM , LKML On Mon, Sep 21, 2015 at 11:52:38AM +0100, Mel Gorman wrote: > __GFP_WAIT was used to signal that the caller was in atomic context and > could not sleep. Now it is possible to distinguish between true atomic > context and callers that are not willing to sleep. The latter should clear > __GFP_DIRECT_RECLAIM so kswapd will still wake. As clearing __GFP_WAIT > behaves differently, there is a risk that people will clear the wrong > flags. This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly indicate > what it does -- setting it allows all reclaim activity, clearing them > prevents it. > > Signed-off-by: Mel Gorman > Acked-by: Michal Hocko > Acked-by: Vlastimil Babka Acked-by: Johannes Weiner -- 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