From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 28 Jan 2008 01:01:02 -0800 From: Andrew Morton Subject: Re: [PATCH] remove duplicating priority setting in try_to_free_p Message-Id: <20080128010102.8cbcbdda.akpm@linux-foundation.org> In-Reply-To: <28c262360801272243h71bf4464s431d1377051c756b@mail.gmail.com> References: <28c262360801252329q7232edc2l2d0e4ed17c054832@mail.gmail.com> <20080127213312.517b8014.akpm@linux-foundation.org> <28c262360801272243h71bf4464s431d1377051c756b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: minchan kim Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Martin Bligh , Nick Piggin List-ID: On Mon, 28 Jan 2008 15:43:56 +0900 "minchan kim" wrote: > > I think this is actually a bugfix. The code you're removing doesn't do the > > > > if (priority < zone->prev_priority) > > > > thing. > > > > shrink_zones() in try_to_free_pages() already called > note_zone_scanning_priority(). > So, it have done it. note_zone_scanning_priority() will only permit ->prev_priority to logically increase, whereas the code which you've removed will also permit ->prev_priority to logically decrease. So I don't see that they are equivalent? -- 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