From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ACB39EB64DC for ; Mon, 10 Jul 2023 16:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230306AbjGJQ5q (ORCPT ); Mon, 10 Jul 2023 12:57:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231601AbjGJQ5n (ORCPT ); Mon, 10 Jul 2023 12:57:43 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0A0EF4 for ; Mon, 10 Jul 2023 09:57:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5hY1mK8fZM8mievQWkaMMm4+MneK9G0ZnnK8toOvx5I=; b=SC+66HP1BlDPbpQxGahSSWJ35M fT6K1bP7MUlouKf8yvfhfswwGpb/mbAW3m53gPRX7XBqo330JJQl9BvEOkYZh9wH9u9cQ8geX4hTj 68Cz11xkwt24Pk9OFzlaAxAN/qJIWRzpgNkNBBtS46ucnHNBHeVMIt12ctwIhseska14knK2K9hCp thirdKfVxI4CUfFStNeBw0PlX+Z64djfBnS195SpYcbnvGeKb3aQFH3x4MU2CrZ1zp408NZPDncrH wJ17RZlMyUJt9gRwxUDESpCoAjeT3wznlCKDgG2OM/iiDflUJ9LP8iZVDvHM0Is37WHh991T39jps usjWds5w==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qIuCS-00EljV-7C; Mon, 10 Jul 2023 16:57:24 +0000 Date: Mon, 10 Jul 2023 17:57:24 +0100 From: Matthew Wilcox To: Ryan Roberts Cc: David Hildenbrand , Andrew Morton , "Kirill A. Shutemov" , Yin Fengwei , Yu Zhao , Catalin Marinas , Will Deacon , Anshuman Khandual , Yang Shi , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 0/5] variable-order, large folios for anonymous memory Message-ID: References: <20230703135330.1865927-1-ryan.roberts@arm.com> <78159ed0-a233-9afb-712f-2df1a4858b22@redhat.com> <4d4c45a2-0037-71de-b182-f516fee07e67@arm.com> <8304d1e2-2848-858d-e25b-5eeef8606754@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8304d1e2-2848-858d-e25b-5eeef8606754@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 10, 2023 at 11:07:47AM +0100, Ryan Roberts wrote: > I think this compaction issue also affects large folios in the page cache? So > really it is a pre-existing bug in the code base that needs to be fixed > independently of large anon folios? Should I assume you are tackling this, Matthew? It does need to be fixed independently of large anon folios. Said fix should probably be backported to 6.1 once it's suitably stable. However, I'm not working on it. I have a lot of projects and this one's a missed-opportunity, not a show-stopper. Sounds like Zi Yan might be interested in tackling it though! From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20AC0EB64DA for ; Mon, 10 Jul 2023 16:57:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xKIGE9WTmjUGVblmxXd6L571PO5aoP6kUxbZ275bHNU=; b=sF9YCxP+m8q1v9 U8cWtYHBjdPq4s48lAhtnApXoD7nh/GaI9n55iISh7TKnq3uxQfU94IZkLFw+MhzI3xKacnkEZh4u MJ4se9mwYY3djJwgh8C1WUAegt1gh7EgcZbz71EmGx0Aw9+moBgPTd3oGwR76d/+HsSWP8do7eXym Zb1gk8s4J2ru1QcDQ+6wTTIS76gd84ZqcsqF6LHIRVj9gSjSB14kvZPib1o1DYaoEjVOd3jF+C39/ QQION5ZIFdEGNy0TQNhsFEJaCQ6W2UltJdEWQx69WSTBDx1IRbD2lWTTpPOtioTBVL6XtRcoaY7aF rGpVh3NpXyQ33sBULZgg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qIuCY-00CGxJ-2h; Mon, 10 Jul 2023 16:57:30 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qIuCX-00CGwF-1X for linux-arm-kernel@bombadil.infradead.org; Mon, 10 Jul 2023 16:57:29 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5hY1mK8fZM8mievQWkaMMm4+MneK9G0ZnnK8toOvx5I=; b=SC+66HP1BlDPbpQxGahSSWJ35M fT6K1bP7MUlouKf8yvfhfswwGpb/mbAW3m53gPRX7XBqo330JJQl9BvEOkYZh9wH9u9cQ8geX4hTj 68Cz11xkwt24Pk9OFzlaAxAN/qJIWRzpgNkNBBtS46ucnHNBHeVMIt12ctwIhseska14knK2K9hCp thirdKfVxI4CUfFStNeBw0PlX+Z64djfBnS195SpYcbnvGeKb3aQFH3x4MU2CrZ1zp408NZPDncrH wJ17RZlMyUJt9gRwxUDESpCoAjeT3wznlCKDgG2OM/iiDflUJ9LP8iZVDvHM0Is37WHh991T39jps usjWds5w==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qIuCS-00EljV-7C; Mon, 10 Jul 2023 16:57:24 +0000 Date: Mon, 10 Jul 2023 17:57:24 +0100 From: Matthew Wilcox To: Ryan Roberts Cc: David Hildenbrand , Andrew Morton , "Kirill A. Shutemov" , Yin Fengwei , Yu Zhao , Catalin Marinas , Will Deacon , Anshuman Khandual , Yang Shi , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 0/5] variable-order, large folios for anonymous memory Message-ID: References: <20230703135330.1865927-1-ryan.roberts@arm.com> <78159ed0-a233-9afb-712f-2df1a4858b22@redhat.com> <4d4c45a2-0037-71de-b182-f516fee07e67@arm.com> <8304d1e2-2848-858d-e25b-5eeef8606754@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <8304d1e2-2848-858d-e25b-5eeef8606754@arm.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 10, 2023 at 11:07:47AM +0100, Ryan Roberts wrote: > I think this compaction issue also affects large folios in the page cache? So > really it is a pre-existing bug in the code base that needs to be fixed > independently of large anon folios? Should I assume you are tackling this, Matthew? It does need to be fixed independently of large anon folios. Said fix should probably be backported to 6.1 once it's suitably stable. However, I'm not working on it. I have a lot of projects and this one's a missed-opportunity, not a show-stopper. Sounds like Zi Yan might be interested in tackling it though! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel