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 X-Spam-Level: X-Spam-Status: No, score=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43CB7C636C8 for ; Tue, 20 Jul 2021 10:53:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24AFC610F7 for ; Tue, 20 Jul 2021 10:53:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237856AbhGTKJW (ORCPT ); Tue, 20 Jul 2021 06:09:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:34660 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236773AbhGTKCu (ORCPT ); Tue, 20 Jul 2021 06:02:50 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D5DCF6120C; Tue, 20 Jul 2021 10:43:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626777809; bh=6cH5Jl0CX+wYlRijXnrox+m77wGnJ7blH2LxXxGvQ94=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=J2SZempbeWlNxeWMltuyYTWoH59TZforrWOESpYyGT9SoZrSYJTDWSO0dvMRA9MH/ HsRqbCheJVAF1no4QQungT2P5YzfkKS3+cbd1eoHyFpYnS+f1EzmrCB+KX9RaLufpT 9cSuh87yjLbaNWTYSZxhIQ4jPoG5mDA4tFL0nhrdYY374Ea3HaL90wSguy5fXnKQBu 05RuMXvuLyLSO3/tRyX7ys8OuFbJpfXaB+3kE10gK18lDyrQOWqDK3N5GjZUozZvAJ fC56rzKLuAfq0PgxSlBx+sLiQ+N+mFgQE5MBpbB/ULhWRNnXe4SinazkFgOEWNGj1E C6GFW5gx16C3w== Date: Tue, 20 Jul 2021 13:43:21 +0300 From: Mike Rapoport To: "Matthew Wilcox (Oracle)" Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , Jeff Layton , "Kirill A . Shutemov" , Vlastimil Babka , William Kucharski , David Howells Subject: Re: [PATCH v14 010/138] mm: Add folio flag manipulation functions Message-ID: References: <20210715033704.692967-1-willy@infradead.org> <20210715033704.692967-11-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210715033704.692967-11-willy@infradead.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 15, 2021 at 04:34:56AM +0100, Matthew Wilcox (Oracle) wrote: > These new functions are the folio analogues of the various PageFlags > functions. If CONFIG_DEBUG_VM_PGFLAGS is enabled, we check the folio > is not a tail page at every invocation. This will also catch the > PagePoisoned case as a poisoned page has every bit set, which would > include PageTail. > > This saves 1684 bytes of text with the distro-derived config that > I'm testing due to removing a double call to compound_head() in > PageSwapCache(). > > Signed-off-by: Matthew Wilcox (Oracle) > Reviewed-by: Christoph Hellwig > Acked-by: Jeff Layton > Acked-by: Kirill A. Shutemov > Acked-by: Vlastimil Babka > Reviewed-by: William Kucharski > Reviewed-by: David Howells > --- > include/linux/page-flags.h | 219 ++++++++++++++++++++++++++----------- > 1 file changed, 156 insertions(+), 63 deletions(-) Acked-by: Mike Rapoport