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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5418BC433F5 for ; Tue, 14 Dec 2021 15:00:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C84336B0073; Tue, 14 Dec 2021 09:59:56 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C0D336B0074; Tue, 14 Dec 2021 09:59:56 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A87496B0075; Tue, 14 Dec 2021 09:59:56 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay029.a.hostedemail.com [64.99.140.29]) by kanga.kvack.org (Postfix) with ESMTP id 9AC986B0073 for ; Tue, 14 Dec 2021 09:59:56 -0500 (EST) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 1C92521D81 for ; Tue, 14 Dec 2021 14:59:46 +0000 (UTC) X-FDA: 78916709172.01.B6E3552 Received: from mail-qv1-f42.google.com (mail-qv1-f42.google.com [209.85.219.42]) by imf02.hostedemail.com (Postfix) with ESMTP id DC72180007 for ; Tue, 14 Dec 2021 14:59:43 +0000 (UTC) Received: by mail-qv1-f42.google.com with SMTP id m6so303958qvh.10 for ; Tue, 14 Dec 2021 06:59:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20210112.gappssmtp.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=you/HNG4TZF+v+WKwgjsAzsKRqVZeoHuBuYViT+/dLo=; b=1OmgDUPhOzz+xnmwqNkqxJLq32MqX28qZAHkeLUP5xIh/Iy40cV2PfECn/O4+zQqK8 L0qIocd2YtB9TO5dd3b7R0t2ilUv5ERIJoKTqY1I2ZMoy4Shb8KIJv4Y53/eVlgzDqIS HQFLbAACVrAt0/FgmQWg3/v0jOKeqFI5HVd8wigbcsnsUUSYWm3QZOKVfFzvRxfT1j0A ls03VmuNE9BGkx60wWvK83782eJVTUwnGpIf3rcXQfa/0iYBHm/euRy6L7UUuN8XWX6M qC9iS7ZMX6THwB3oTqlFwd3+AgW1p8fj4nEOTGIHNAQylIkKNhveyp05dU6F7Tw3EBSC tudQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=you/HNG4TZF+v+WKwgjsAzsKRqVZeoHuBuYViT+/dLo=; b=GxI+vG3cZ0iIdiH5r7qbLFUv1C0S3iDRNDePaU1mmW6CAnOxQzpUxijcniWYfSQPaU wIbd8DGF1KFmW+xHDp+xd92tE7mjWCYwqq9r9zv+oWfdW6Z6cEfV1ejAw8U2rrTX6IFU rl/G2X1VzkvANAdNn6RQ8v/oVSztPTlirPWivqFKn1jY6D6pVmbc51IJtZ17ynugf0hc OgtlZs4n4szergJY9neKGkN7S6gVz60MHI0BDN0GujQ/Zir5NanUysl7/Wu26/EJKTEE Lk9RKGZc8zHm5PbiKjjn330S8ougNutcuzUHO0wIOMui4Q5ChPA72P4sEoGlwq6JJJvI j67g== X-Gm-Message-State: AOAM533duED3SHLb7OhtXYQQOV0ioYsMIqyM+sEKD1ce+LJCOGTxZIOC zj8ITr9+8mDLvuOw/6x5Ov+r0A== X-Google-Smtp-Source: ABdhPJxKprLbaF45m4aFZBCu8TcN47p88Sv27sxNXUwq/W62Jrj+gAb3bfdkghHDiwPsPeORB/7bTw== X-Received: by 2002:ad4:50c7:: with SMTP id e7mr5847985qvq.53.1639493985145; Tue, 14 Dec 2021 06:59:45 -0800 (PST) Received: from localhost ([2620:10d:c091:480::1:e1e4]) by smtp.gmail.com with ESMTPSA id ay36sm49065qkb.60.2021.12.14.06.59.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Dec 2021 06:59:44 -0800 (PST) Date: Tue, 14 Dec 2021 15:59:42 +0100 From: Johannes Weiner To: Vlastimil Babka Cc: Matthew Wilcox , Christoph Lameter , David Rientjes , Joonsoo Kim , Pekka Enberg , linux-mm@kvack.org, Andrew Morton , patches@lists.linux.dev, Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" Subject: Re: [PATCH v2 28/33] bootmem: Use page->index instead of page->freelist Message-ID: References: <20211201181510.18784-1-vbabka@suse.cz> <20211201181510.18784-29-vbabka@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211201181510.18784-29-vbabka@suse.cz> Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=cmpxchg-org.20210112.gappssmtp.com header.s=20210112 header.b=1OmgDUPh; spf=pass (imf02.hostedemail.com: domain of hannes@cmpxchg.org designates 209.85.219.42 as permitted sender) smtp.mailfrom=hannes@cmpxchg.org; dmarc=pass (policy=none) header.from=cmpxchg.org X-Rspamd-Queue-Id: DC72180007 X-Stat-Signature: 58dkank9q3ypc4nin8mapdhjgd5h8pkp X-Rspamd-Server: rspam04 X-HE-Tag: 1639493983-395316 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Dec 01, 2021 at 07:15:05PM +0100, Vlastimil Babka wrote: > From: "Matthew Wilcox (Oracle)" > > page->freelist is for the use of slab. Using page->index is the same > set of bits as page->freelist, and by using an integer instead of a > pointer, we can avoid casts. > > Signed-off-by: Matthew Wilcox (Oracle) > Signed-off-by: Vlastimil Babka > Cc: Dave Hansen > Cc: Andy Lutomirski > Cc: Peter Zijlstra > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Borislav Petkov > Cc: > Cc: "H. Peter Anvin" Acked-by: Johannes Weiner