From patchwork Thu Dec 9 23:04:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 1566130 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=sent.com header.i=@sent.com header.a=rsa-sha256 header.s=fm2 header.b=yrJquY5V; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm1 header.b=AQVq+JfE; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4J98m9320Lz9sCD for ; Fri, 10 Dec 2021 10:06:17 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J98m91RKWz3cST for ; Fri, 10 Dec 2021 10:06:17 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=sent.com header.i=@sent.com header.a=rsa-sha256 header.s=fm2 header.b=yrJquY5V; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm1 header.b=AQVq+JfE; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sent.com (client-ip=66.111.4.221; helo=new1-smtp.messagingengine.com; envelope-from=zi.yan@sent.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=sent.com header.i=@sent.com header.a=rsa-sha256 header.s=fm2 header.b=yrJquY5V; dkim=pass (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm1 header.b=AQVq+JfE; dkim-atps=neutral Received: from new1-smtp.messagingengine.com (new1-smtp.messagingengine.com [66.111.4.221]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4J98kM4LF9z300S for ; Fri, 10 Dec 2021 10:04:42 +1100 (AEDT) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailnew.nyi.internal (Postfix) with ESMTP id A15E258025B; Thu, 9 Dec 2021 18:04:39 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Thu, 09 Dec 2021 18:04:39 -0500 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=fm2; bh=uSnT9wX9f4RMq YBTDyi5K0c2MPG9GRSJQ2BdfgYLu1Y=; b=yrJquY5Vxp9aHnRf1yxk/mrjinrMk puUT86QJ3m3xejhByD6AGOCAMlWkM4ic+/fTJsjGrrOlrGgw+A5D8LaeKXrgQs5K XyW9WKm3mTXS7i27T8wFG+DgqoPVTrmGsWSFISPxdXkmsGRVN00OIGqTecWzeVtj JyOw1zdKO6tBcX7/CEazWnk4ZPnIEbYhy//29o88prEDHcSN5qSP9EPVigm2Srh/ vOa84XBnLXIMVs/hU/df53IlEn08xNSacedy2WSCALroQ0NROQkPd4l0SUT4aNN6 gRZPtBQt+VBrfOncH0bDf/73yxhHM6qJwSS4DDOaJjx3R158ZPTX2RnKQ== 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= fm1; bh=uSnT9wX9f4RMqYBTDyi5K0c2MPG9GRSJQ2BdfgYLu1Y=; b=AQVq+JfE lFDq+6QUOYTBvKLjaTXK0jnW0c9jpLBUM1WhMe8NY5jNBBfgSQYDKtDratHPUlQp sTEGcUYldmZ3hm4TllzwO3DjdaT0tAQMSJlWDOvtwNFzimFTi5cCZDnc1QpY/2gI O9SyXfzO4SjmT51Ujnstws3Jtl7Kc4JBTOMhhlYWtkuT7NNLNiUw1JYvJvRQ9/gB T7h/Th+4MX/sfEi2vcnLzQN6WaSopOvf5U3sp8dd6TgnUiUAAOC8XKXVj3seJLXN 0DUIZ1TnJcWCcs4yumsuCl15ys/edoz4MnEUoCbNRUxJhlQn/OHJvrjOpTwtt9wX vR6qrSjGWm+ZGg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrkedugddtgecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhhrggfgsedtqhertdertddtnecuhfhrohhmpegkihcujggr nhcuoeiiihdrhigrnhesshgvnhhtrdgtohhmqeenucggtffrrghtthgvrhhnpeeijeeuvd euudeuhfeghfehieeuvdetvdeugfeigeevteeuieeuhedtgeduheefleenucevlhhushht vghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpeiiihdrhigrnhesshgvnh htrdgtohhm X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 9 Dec 2021 18:04:38 -0500 (EST) From: Zi Yan To: David Hildenbrand , linux-mm@kvack.org Subject: [RFC PATCH v2 3/7] mm: migrate: allocate the right size of non hugetlb or THP compound pages. Date: Thu, 9 Dec 2021 18:04:10 -0500 Message-Id: <20211209230414.2766515-4-zi.yan@sent.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211209230414.2766515-1-zi.yan@sent.com> References: <20211209230414.2766515-1-zi.yan@sent.com> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Zi Yan Cc: Mel Gorman , Zi Yan , Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Eric Ren , virtualization@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, Christoph Hellwig , Vlastimil Babka , Marek Szyprowski Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Zi Yan alloc_migration_target() is used by alloc_contig_range() and non-LRU movable compound pages can be migrated. Current code does not allocate the right page size for such pages. Check THP precisely using is_transparent_huge() and add allocation support for non-LRU compound pages. Signed-off-by: Zi Yan --- mm/migrate.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index d487a399253b..2ce3c771b1de 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1563,7 +1563,7 @@ struct page *alloc_migration_target(struct page *page, unsigned long private) return alloc_huge_page_nodemask(h, nid, mtc->nmask, gfp_mask); } - if (PageTransHuge(page)) { + if (is_transparent_hugepage(page)) { /* * clear __GFP_RECLAIM to make the migration callback * consistent with regular THP allocations. @@ -1572,13 +1572,17 @@ struct page *alloc_migration_target(struct page *page, unsigned long private) gfp_mask |= GFP_TRANSHUGE; order = HPAGE_PMD_ORDER; } + if (PageCompound(page)) { + gfp_mask |= __GFP_COMP; + order = compound_order(page); + } zidx = zone_idx(page_zone(page)); if (is_highmem_idx(zidx) || zidx == ZONE_MOVABLE) gfp_mask |= __GFP_HIGHMEM; new_page = __alloc_pages(gfp_mask, order, nid, mtc->nmask); - if (new_page && PageTransHuge(new_page)) + if (new_page && is_transparent_hugepage(page)) prep_transhuge_page(new_page); return new_page;