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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 764FEC433E1 for ; Sat, 15 Aug 2020 00:30:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3729022BF3 for ; Sat, 15 Aug 2020 00:30:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="VO5/8TSH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3729022BF3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id DB3DE6B0002; Fri, 14 Aug 2020 20:30:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D63626B002C; Fri, 14 Aug 2020 20:30:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C53816B002D; Fri, 14 Aug 2020 20:30:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0061.hostedemail.com [216.40.44.61]) by kanga.kvack.org (Postfix) with ESMTP id AEBD16B0002 for ; Fri, 14 Aug 2020 20:30:45 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 7E960127B for ; Sat, 15 Aug 2020 00:30:45 +0000 (UTC) X-FDA: 77150922450.29.tin22_590183427001 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id 55A2C18042E1D for ; Sat, 15 Aug 2020 00:30:45 +0000 (UTC) X-HE-Tag: tin22_590183427001 X-Filterd-Recvd-Size: 2667 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf20.hostedemail.com (Postfix) with ESMTP for ; Sat, 15 Aug 2020 00:30:44 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D7DD622B4B; Sat, 15 Aug 2020 00:30:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597451444; bh=++vL9+ojwEXDICxj/fe7a4hZzf7XNJzmA7W3ygUedH8=; h=Date:From:To:Subject:In-Reply-To:From; b=VO5/8TSH2Dxp5SXA992juoQM28EkKSzAiMeWKUlGQf3qzG53hBLLfK0rjogcqg/In jdWPVOEQ+NqixJS8V+y8oZpDMYo0xJ52F9CRdInj9Zc53IKdTNhCOS8R+sMdu1T0rl u6Xdp24dsIlD6A2mTbNCuuEDijoEz+yL4tLNlHsM= Date: Fri, 14 Aug 2020 17:30:43 -0700 From: Andrew Morton To: akpm@linux-foundation.org, david@redhat.com, kirill.shutemov@linux.intel.com, linux-mm@kvack.org, mike.kravetz@oracle.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, william.kucharski@oracle.com, willy@infradead.org, ziy@nvidia.com Subject: [patch 13/39] mm: introduce offset_in_thp Message-ID: <20200815003043.SkWT1tEoI%akpm@linux-foundation.org> In-Reply-To: <20200814172939.55d6d80b6e21e4241f1ee1f3@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 55A2C18042E1D X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 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: From: "Matthew Wilcox (Oracle)" Subject: mm: introduce offset_in_thp Mirroring offset_in_page(), this gives you the offset within this particular page, no matter what size page it is. It optimises down to offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set. Link: http://lkml.kernel.org/r/20200629151959.15779-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: David Hildenbrand Reviewed-by: William Kucharski Reviewed-by: Zi Yan Cc: Mike Kravetz Cc: "Kirill A. Shutemov" Signed-off-by: Andrew Morton --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) --- a/include/linux/mm.h~mm-introduce-offset_in_thp +++ a/include/linux/mm.h @@ -1594,6 +1594,7 @@ static inline void clear_page_pfmemalloc extern void pagefault_out_of_memory(void); #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) +#define offset_in_thp(page, p) ((unsigned long)(p) & (thp_size(page) - 1)) /* * Flags passed to show_mem() and show_free_areas() to suppress output in _