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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0DAE4C433DF for ; Mon, 29 Jun 2020 15:20:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BC5BC246C1 for ; Mon, 29 Jun 2020 15:20:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="e7DH7+XY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC5BC246C1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 09F8E6B0055; Mon, 29 Jun 2020 11:20:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 02B8A6B005C; Mon, 29 Jun 2020 11:20:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DE16C6B005D; Mon, 29 Jun 2020 11:20:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0156.hostedemail.com [216.40.44.156]) by kanga.kvack.org (Postfix) with ESMTP id B8E946B0055 for ; Mon, 29 Jun 2020 11:20:10 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 7B7212DFA for ; Mon, 29 Jun 2020 15:20:10 +0000 (UTC) X-FDA: 76982610180.16.ghost21_521413f26e70 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin16.hostedemail.com (Postfix) with ESMTP id 3C1CD100E690B for ; Mon, 29 Jun 2020 15:20:10 +0000 (UTC) X-HE-Tag: ghost21_521413f26e70 X-Filterd-Recvd-Size: 2944 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Mon, 29 Jun 2020 15:20:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=ttGcAvOxnEG9VnrEf9OemS0lv4LPw6xb0Xhlc9yhXlI=; b=e7DH7+XYvnm256uXhaetvoi9BG WtCwgjk35pEDD8jAiGlfADSVwU6vsF4doBpW84LEI/nosr1otS3xCmImn9Z9zVS7x2ANLtXdoPBKI oESvfOmPzqgZzOjG8B0QCT3DAFYCbHFj1mPs7/ItICl8/52JuGL17Aj2/DZSf9a9MSWDVReENcyMK z8vFUCW1iBySwBuv6OVPA3TgjioK42BMzqQn4VUUNewCG5E4N7fk2R4yVI+WHWr01mdNE1E9m1I/T 2Wr8m7/7wFLSOr31GHyImQGlkgl2YSTtqFSGHHlxt7hSPQV3EB0s01x7wFX0s8hnzGXHaQ7PB3Ho9 wFYQoacw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jpvZo-0004CF-8Q; Mon, 29 Jun 2020 15:20:08 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH 3/7] mm: Add thp_order Date: Mon, 29 Jun 2020 16:19:55 +0100 Message-Id: <20200629151959.15779-4-willy@infradead.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200629151959.15779-1-willy@infradead.org> References: <20200629151959.15779-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 3C1CD100E690B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 Content-Transfer-Encoding: quoted-printable 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: This function returns the order of a transparent huge page. It compiles to 0 if CONFIG_TRANSPARENT_HUGEPAGE is disabled. Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/huge_mm.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 71f20776b06c..dd19720a8bc2 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -265,6 +265,19 @@ static inline spinlock_t *pud_trans_huge_lock(pud_t = *pud, else return NULL; } + +/** + * thp_order - Order of a transparent huge page. + * @page: Head page of a transparent huge page. + */ +static inline unsigned int thp_order(struct page *page) +{ + VM_BUG_ON_PGFLAGS(PageTail(page), page); + if (PageHead(page)) + return HPAGE_PMD_ORDER; + return 0; +} + static inline int hpage_nr_pages(struct page *page) { if (unlikely(PageTransHuge(page))) @@ -324,6 +337,12 @@ static inline struct list_head *page_deferred_list(s= truct page *page) #define HPAGE_PUD_MASK ({ BUILD_BUG(); 0; }) #define HPAGE_PUD_SIZE ({ BUILD_BUG(); 0; }) =20 +static inline unsigned int thp_order(struct page *page) +{ + VM_BUG_ON_PGFLAGS(PageTail(page), page); + return 0; +} + static inline int hpage_nr_pages(struct page *page) { VM_BUG_ON_PAGE(PageTail(page), page); --=20 2.27.0