From patchwork Wed Mar 29 01:17:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 668423 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 887D8C77B6D for ; Wed, 29 Mar 2023 01:17:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229703AbjC2BRi (ORCPT ); Tue, 28 Mar 2023 21:17:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229489AbjC2BRg (ORCPT ); Tue, 28 Mar 2023 21:17:36 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01C4712E; Tue, 28 Mar 2023 18:17:35 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 5837D5C00DD; Tue, 28 Mar 2023 21:17:35 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Tue, 28 Mar 2023 21:17:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:reply-to:sender:subject:subject:to:to; s=fm2; t= 1680052655; x=1680139055; bh=Yr+uFjBJL/0qCDkJMJuMYA8+4U49oyS8kQR IZ4QnQ48=; b=c2vliS6JhQxy5/eS0afSs1yoR0oEYtCAkHHfJ2NY2HoMe7XHOOO CpMt1njwoyf3knkBXLIr/09frjWyWNQ6HWyDMuDMqDAsjwx4bN64V4Z1J5laPlco Q+70dNV/AvOttP16sojJ1qlpXAxPTYlsQ0mC1fdyenzk4Zcf7sRdZ/gKgFDqw6Si +6e6b+PpALSBM7Dc5XfhMCKS8eIeNEY/v1JZvJM9wjf+mxXnQbldnkPhHeZx6IYq wepPh+YKS1q6698TPsrzZRfUE9eF1inQwUrBZT6wI+fT84QDqizyidBrXPiNaeqN VLi8wAzUPIOSdjrZ9ZYc0RPUjkhHqg2J6Iw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1680052655; x=1680139055; bh=Yr+uFjBJL/0qCDkJMJuMYA8+4U49oyS8kQR IZ4QnQ48=; b=mKrpjOke7X6OEH7MkeQZ+uLgHdMAhITBjBpB7pRv9Ae+UiAhZ8X bOlmsLDdOJtdChgpQ7DlpAZoC0KEfS45ibzrvGH3CCbA2Hq3Bs7hBFwcAKuKOoh5 y1hy12LARUXJ8yaaWC2CsIo79wufNnEBnWtYlLU5n3t87xuexEQ0JBGdWQWAo3EE V74ZQPgyulK1CJ8ZreNYH+SXNPkH9vccUk7fIoGTfN9YJruBbJLUGP1qRbbM7Tek U0YPeaz6CfQDmeAi/6BiXzHV9FYbJHa2bHHju+IWJ8h7lLbAPfe1QacehYnuL6EE q6S3li6xjFrlFPgAhZM1YtRNhgS6YUoyWtQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdehhedggeeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhhrggfgsedtqhertdertddtnecuhfhrohhmpegkihcu jggrnhcuoeiiihdrhigrnhesshgvnhhtrdgtohhmqeenucggtffrrghtthgvrhhnpeegge ehudfgudduvdelheehteegledtteeiveeuhfffveekhfevueefieeijeegvdenucevlhhu shhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpeiiihdrhigrnhessh gvnhhtrdgtohhm X-ME-Proxy: Feedback-ID: iccd040f4:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 28 Mar 2023 21:17:34 -0400 (EDT) From: Zi Yan To: "Matthew Wilcox (Oracle)" , Yang Shi , Yu Zhao , linux-mm@kvack.org Cc: Zi Yan , "Kirill A . Shutemov" , Ryan Roberts , =?utf-8?q?Michal_Koutn=C3=BD?= , Roman Gushchin , "Zach O'Keefe" , Andrew Morton , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 1/7] mm/memcg: use order instead of nr in split_page_memcg() Date: Tue, 28 Mar 2023 21:17:06 -0400 Message-Id: <20230329011712.3242298-2-zi.yan@sent.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230329011712.3242298-1-zi.yan@sent.com> References: <20230329011712.3242298-1-zi.yan@sent.com> Reply-To: Zi Yan MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Zi Yan We do not have non power of two pages, using nr is error prone if nr is not power-of-two. Use page order instead. Signed-off-by: Zi Yan --- include/linux/memcontrol.h | 4 ++-- mm/huge_memory.c | 3 ++- mm/memcontrol.c | 3 ++- mm/page_alloc.c | 4 ++-- 4 files changed, 8 insertions(+), 6 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index aa69ea98e2d8..e06a61ea4fc1 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1151,7 +1151,7 @@ static inline void memcg_memory_event_mm(struct mm_struct *mm, rcu_read_unlock(); } -void split_page_memcg(struct page *head, unsigned int nr); +void split_page_memcg(struct page *head, int order); unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, gfp_t gfp_mask, @@ -1588,7 +1588,7 @@ void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) { } -static inline void split_page_memcg(struct page *head, unsigned int nr) +static inline void split_page_memcg(struct page *head, int order) { } diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 81a5689806af..3bb003eb80a3 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2512,10 +2512,11 @@ static void __split_huge_page(struct page *page, struct list_head *list, struct address_space *swap_cache = NULL; unsigned long offset = 0; unsigned int nr = thp_nr_pages(head); + int order = folio_order(folio); int i; /* complete memcg works before add pages to LRU */ - split_page_memcg(head, nr); + split_page_memcg(head, order); if (PageAnon(head) && PageSwapCache(head)) { swp_entry_t entry = { .val = page_private(head) }; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 681e7528a714..cab2828e188d 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3414,11 +3414,12 @@ void obj_cgroup_uncharge(struct obj_cgroup *objcg, size_t size) /* * Because page_memcg(head) is not set on tails, set it now. */ -void split_page_memcg(struct page *head, unsigned int nr) +void split_page_memcg(struct page *head, int order) { struct folio *folio = page_folio(head); struct mem_cgroup *memcg = folio_memcg(folio); int i; + unsigned int nr = 1 << order; if (mem_cgroup_disabled() || !memcg) return; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0767dd6bc5ba..d84b121d1e03 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2781,7 +2781,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); split_page_owner(page, 1 << order); - split_page_memcg(page, 1 << order); + split_page_memcg(page, order); } EXPORT_SYMBOL_GPL(split_page); @@ -4997,7 +4997,7 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order, struct page *last = page + nr; split_page_owner(page, 1 << order); - split_page_memcg(page, 1 << order); + split_page_memcg(page, order); while (page < --last) set_page_refcounted(last);