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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0078AC433EF for ; Tue, 12 Oct 2021 18:02:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEFE0610C9 for ; Tue, 12 Oct 2021 18:02:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233378AbhJLSEX (ORCPT ); Tue, 12 Oct 2021 14:04:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232699AbhJLSEA (ORCPT ); Tue, 12 Oct 2021 14:04:00 -0400 Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72C7FC061570 for ; Tue, 12 Oct 2021 11:01:58 -0700 (PDT) Received: by mail-qt1-x831.google.com with SMTP id c28so124275qtv.11 for ; Tue, 12 Oct 2021 11:01:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=J8ymrs8BqWOXJaCIl/vcEAutu2VS1jf5LIfnMpirIno=; b=api8DVz7bx2oVQ9f/ldYVg6zIqaVgDK7XC9AFr+oN86gJUIaU00fus2enBiUFdASXt 9z97UHOo927hwXvSGCqTP+3e5Iw95QOfW8fVJS/47yZSekiS0TdW1Pc8iMeEjE9Nuyi+ Pi7Cji+zNPmltNfU5w+6HHF8PdI6yIQH87MkiQcaOZGv0hjr7XPQJTkrU/cUMXhMKfef QEAQk/jeArS7E8NqSbtWRxnWH3BdQwv2AgQcrUsE4Tf1Yed9OouT6Kmah7HPNjLgsV3q vgMFftQyqsTPtygeQr5esj1j1xfCcPWCPKt1B4XgzkbuXHYcoYGGJN4TzKlfZ31yVoOd zTSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=J8ymrs8BqWOXJaCIl/vcEAutu2VS1jf5LIfnMpirIno=; b=BCH88w73IUW561uIDQyh4d7FVe3th5UwQ+MpZq2ct88p1nITu9+9aQCY32x4uQRUqF Lf47sRQLCfoT1XKjaeGtae/aJq+rONM8bAGRgHS8ArsyZMnerDbHJk5zgmSoQ6OouXrp FB2BenrsXuNs26SqM5KsQI9QIKegKhH+n7BICOQyZM8t0INatWv8uu7G6mmn+uOvnn4c I96qEKKMsVM6dvSwGpLwXfyn0opb92Z8rTEtJhjw9vkFmiDLh8CAu0yC6PJfIOUKXQsn Out5yXG+Ka369FA5xoFtT/S+733SzUcPbTS65qjB2sJW++iEq8byMEBWeqjiiRW3YN3P RSsQ== X-Gm-Message-State: AOAM533dlDDM3fgFTcvtOxcROHUneBx026+cPeCR6wktSZLYhWkZY/KM J8oRew8jc9QPeB/OZuPWU3jI8g== X-Google-Smtp-Source: ABdhPJwex0JUkya50iE19scsh2CAYyRUyxGrtV8kBBtZ1MSZyKRxk+YCwqYGdOyf580wHjeqTNFzFQ== X-Received: by 2002:ac8:1e10:: with SMTP id n16mr24325914qtl.86.1634061717671; Tue, 12 Oct 2021 11:01:57 -0700 (PDT) Received: from localhost (cpe-98-15-154-102.hvc.res.rr.com. [98.15.154.102]) by smtp.gmail.com with ESMTPSA id 6sm3417977qko.88.2021.10.12.11.01.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Oct 2021 11:01:57 -0700 (PDT) From: Johannes Weiner To: linux-mm@kvack.org Cc: Matthew Wilcox , Kent Overstreet , "Kirill A. Shutemov" , Vlastimil Babka , Michal Hocko , Roman Gushchin , linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: [PATCH 06/11] PageSlab: eliminate unnecessary compound_head() call in mm/nommu Date: Tue, 12 Oct 2021 14:01:43 -0400 Message-Id: <20211012180148.1669685-7-hannes@cmpxchg.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211012180148.1669685-1-hannes@cmpxchg.org> References: <20211012180148.1669685-1-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The page comes from virt_to_head_page(). Signed-off-by: Johannes Weiner --- mm/nommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/nommu.c b/mm/nommu.c index c233126dd476..02d2427b8f9e 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -87,7 +87,7 @@ unsigned int kobjsize(const void *objp) * If the allocator sets PageSlab, we know the pointer came from * kmalloc(). */ - if (PageSlab(compound_head(page))) + if (PageSlab(page)) return ksize(objp); /* -- 2.32.0