From patchwork Mon Jan 10 04:23:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12708192 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 B714BC433F5 for ; Mon, 10 Jan 2022 04:25:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 406DD6B00B2; Sun, 9 Jan 2022 23:24:49 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2DCB86B00B5; Sun, 9 Jan 2022 23:24:49 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AA2696B00B6; Sun, 9 Jan 2022 23:24:48 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0251.hostedemail.com [216.40.44.251]) by kanga.kvack.org (Postfix) with ESMTP id 1A7586B00B3 for ; Sun, 9 Jan 2022 23:24:48 -0500 (EST) Received: from smtpin31.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id D22D980894 for ; Mon, 10 Jan 2022 04:24:47 +0000 (UTC) X-FDA: 79013086614.31.27D9B89 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf25.hostedemail.com (Postfix) with ESMTP id 77285A0006 for ; Mon, 10 Jan 2022 04:24:47 +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=w+88rodVOkiUqMds1CDDO2rnbx+ZzvbF6EDnhZLZjHk=; b=MHde1Qleuqe7Nk4xqACcAx7HEl D8kJGZeV3c227mQCZyDaXVLZZyyzsX283wSRbmVtVux8gfh65uIkUe9PKbmG7LiN8Av1rGrz0b64n wzKrvVfSE8faTN1k0nH9mOXqLhoC2As+LH2ynMSk2GovVwLBt8PhprrxJGMwurHMoQN0j2e5UdE3d matAxpEXJXnrEz0GvItCgqQ/YSIzOpNc1FmFeBXxfCgj1n7Krq20kEMmHbbFFHodTHPqMzuBEJkbu +GVmJzrwFRfYm5SfWSxrlFJy1tI2FcZk9l8FDXj+mYCMLNpfQV739wpVskuIZrwIK6yfdqEQ/AdN7 fNaNMXMw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1n6mE8-0025wq-SO; Mon, 10 Jan 2022 04:24:12 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , John Hubbard , Christoph Hellwig , William Kucharski , linux-kernel@vger.kernel.org, Jason Gunthorpe Subject: [PATCH v2 13/28] mm: Add folio_pincount_ptr() Date: Mon, 10 Jan 2022 04:23:51 +0000 Message-Id: <20220110042406.499429-14-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220110042406.499429-1-willy@infradead.org> References: <20220110042406.499429-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 77285A0006 X-Stat-Signature: tzp5zozj7rj9t8aijcah6razxcfmigrf Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=MHde1Qle; spf=none (imf25.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-HE-Tag: 1641788687-474667 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 is the folio equivalent of compound_pincount_ptr(). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Reviewed-by: John Hubbard --- include/linux/mm_types.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 60e4595eaf63..34c7114ea9e9 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -312,6 +312,12 @@ static inline atomic_t *compound_mapcount_ptr(struct page *page) return &page[1].compound_mapcount; } +static inline atomic_t *folio_pincount_ptr(struct folio *folio) +{ + struct page *tail = &folio->page + 1; + return &tail->compound_pincount; +} + static inline atomic_t *compound_pincount_ptr(struct page *page) { return &page[1].compound_pincount;