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=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 EE0F6C4727E for ; Mon, 28 Sep 2020 18:02:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A87DE20BED for ; Mon, 28 Sep 2020 18:02:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sent.com header.i=@sent.com header.b="aGKrAuFE"; dkim=temperror (0-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="Rmjfm5wt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727030AbgI1SCY (ORCPT ); Mon, 28 Sep 2020 14:02:24 -0400 Received: from wnew3-smtp.messagingengine.com ([64.147.123.17]:37469 "EHLO wnew3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726817AbgI1SBT (ORCPT ); Mon, 28 Sep 2020 14:01:19 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.west.internal (Postfix) with ESMTP id 5B2A9E3B; Mon, 28 Sep 2020 13:55:22 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Mon, 28 Sep 2020 13:55:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=from :to:cc:subject:date:message-id:in-reply-to:references:reply-to :mime-version:content-transfer-encoding; s=fm1; bh=yT8BqugvTfzX9 L+ABEmA5mKWIFrSrhshFc+djKx/V3o=; b=aGKrAuFETfvFo4s3uBM7F78Ud8X7/ xkgCTUDMcd/tBhOn3y4M2odiBIVc+w0gnHamHUE7/pmQCVRkxwQx0xrVBRtaZFSd SYRu78pFlEIy59DpizHiI/ivIx3zR3piW2nuHavWVXcoYOVIdmQgK/Fmh9VVVmbW 3MN3fZoFbfvsr5Nh0T9nbx4IXc1gG2tOqBE1gVDZ1uUPZfpjKaZ5/1ulENnYq1Eh gREN3MAcLIOcUF12c0W4q2AV3JlCAp2GOFR6jnZ93A1ySOmn3TwNqu8YYReHLl81 MGdfCTyDMdZZbXPvbaxiIsfWkU8cEdU5NOePBq35hzjKsTq7vp8JoIj+w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:reply-to:subject :to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=yT8BqugvTfzX9L+ABEmA5mKWIFrSrhshFc+djKx/V3o=; b=Rmjfm5wt kVGtJQ24G9TjUoQR/Oq6OBke3QE1yzYEVXda6XuNBCCNyrwr1Z/QesQKOVxm7rtA w7N4pMnJ4YrYKof4L2avf4X5X98uJvIwC/s/3Fcp3+G9VsLBqchhS34/yOTSSnD0 L4sh0vaaX6xtYxfygSZLi3eAt9ic1OSPm61gTGYFWiAS41OrvgZ5jvL5qaLeX7Y7 NWB7sKeYl2yQy0Rn3oc0KiQ077MKSQ7dkYF7taEkgXidwU3Gz8pxMMissx/1nfKo AhyiUFAckTiYQER28ehsjj87Z9i4OtqcsEFPE1eYaotoVe44AWBd34ttZS6qKAtN rtbFpVqoHU9tgw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrvdeigdeliecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhhrggfgsedtkeertdertddtnecuhfhrohhmpegkihcujggr nhcuoeiiihdrhigrnhesshgvnhhtrdgtohhmqeenucggtffrrghtthgvrhhnpeduhfffve ektdduhfdutdfgtdekkedvhfetuedufedtgffgvdevleehheevjefgtdenucfkphepuddv rdegiedruddtiedrudeigeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmh grihhlfhhrohhmpeiiihdrhigrnhesshgvnhhtrdgtohhm X-ME-Proxy: Received: from nvrsysarch6.NVidia.COM (unknown [12.46.106.164]) by mail.messagingengine.com (Postfix) with ESMTPA id 763C8306468B; Mon, 28 Sep 2020 13:55:21 -0400 (EDT) From: Zi Yan To: linux-mm@kvack.org Cc: "Kirill A . Shutemov" , Roman Gushchin , Rik van Riel , Matthew Wilcox , Shakeel Butt , Yang Shi , Jason Gunthorpe , Mike Kravetz , Michal Hocko , David Hildenbrand , William Kucharski , Andrea Arcangeli , John Hubbard , David Nellans , linux-kernel@vger.kernel.org, Zi Yan Subject: [RFC PATCH v2 10/30] fs: proc: add PUD THP kpageflag. Date: Mon, 28 Sep 2020 13:54:08 -0400 Message-Id: <20200928175428.4110504-11-zi.yan@sent.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200928175428.4110504-1-zi.yan@sent.com> References: <20200928175428.4110504-1-zi.yan@sent.com> Reply-To: Zi Yan MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zi Yan Bit 27 is used to identify PUD THP. Signed-off-by: Zi Yan --- fs/proc/page.c | 2 ++ include/uapi/linux/kernel-page-flags.h | 1 + 2 files changed, 3 insertions(+) diff --git a/fs/proc/page.c b/fs/proc/page.c index f3b39a7d2bf3..e4e2ad3612c9 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -161,6 +161,8 @@ u64 stable_page_flags(struct page *page) u |= BIT_ULL(KPF_ZERO_PAGE); u |= BIT_ULL(KPF_THP); } + if (compound_order(head) == HPAGE_PUD_ORDER) + u |= 1 << KPF_PUD_THP; } else if (is_zero_pfn(page_to_pfn(page))) u |= BIT_ULL(KPF_ZERO_PAGE); diff --git a/include/uapi/linux/kernel-page-flags.h b/include/uapi/linux/kernel-page-flags.h index 6f2f2720f3ac..62c5fc70909b 100644 --- a/include/uapi/linux/kernel-page-flags.h +++ b/include/uapi/linux/kernel-page-flags.h @@ -36,5 +36,6 @@ #define KPF_ZERO_PAGE 24 #define KPF_IDLE 25 #define KPF_PGTABLE 26 +#define KPF_PUD_THP 27 #endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */ -- 2.28.0