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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 839BEC433DB for ; Wed, 24 Feb 2021 20:08:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 17C5064F19 for ; Wed, 24 Feb 2021 20:08:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 17C5064F19 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9B9298D0034; Wed, 24 Feb 2021 15:08:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 9906F8D001E; Wed, 24 Feb 2021 15:08:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 87FF18D0034; Wed, 24 Feb 2021 15:08:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0232.hostedemail.com [216.40.44.232]) by kanga.kvack.org (Postfix) with ESMTP id 6E8208D001E for ; Wed, 24 Feb 2021 15:08:20 -0500 (EST) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 38BFF18014C9F for ; Wed, 24 Feb 2021 20:08:20 +0000 (UTC) X-FDA: 77854248360.19.EB267F8 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf11.hostedemail.com (Postfix) with ESMTP id 1F7782000391 for ; Wed, 24 Feb 2021 20:08:09 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 0D93964F0D; Wed, 24 Feb 2021 20:08:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197298; bh=9H1S/DN99tmFca0yESGx7ECCkIXsZWFLc1b1JEIkSRw=; h=Date:From:To:Subject:In-Reply-To:From; b=NGtfF1Cd9XmXQ9//NGt7KZMvdAT2n3G8Wi9wojo8v19jkpDgf9/pQ0L9pS3drjphq D1b96Maa2SKPFrszcW540HlzmYezgUIoAc1v62OhCD7qH/GCfHT/+2UsGEKG9HoylE 34jU0oiELmgs6VYBDGeiwu8ioZ8R4NNygwQPSzfo= Date: Wed, 24 Feb 2021 12:08:17 -0800 From: Andrew Morton To: akpm@linux-foundation.org, alex.shi@linux.alibaba.com, guro@fb.com, hannes@cmpxchg.org, hughd@google.com, linux-mm@kvack.org, mhocko@kernel.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, vbabka@suse.cz, vdavydov.dev@gmail.com, willy@infradead.org, yuzhao@google.com Subject: [patch 137/173] mm: don't pass "enum lru_list" to lru list addition functions Message-ID: <20210224200817.3EXVRnUYe%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 1F7782000391 X-Stat-Signature: hqrygpzq8bzeo7iqpirgxi7ff3pj1tc9 Received-SPF: none (linux-foundation.org>: No applicable sender policy available) receiver=imf11; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614197289-739648 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: From: Yu Zhao Subject: mm: don't pass "enum lru_list" to lru list addition functions The "enum lru_list" parameter to add_page_to_lru_list() and add_page_to_lru_list_tail() is redundant in the sense that it can be extracted from the "struct page" parameter by page_lru(). A caveat is that we need to make sure PageActive() or PageUnevictable() is correctly set or cleared before calling these two functions. And they are indeed. Link: https://lore.kernel.org/linux-mm/20201207220949.830352-4-yuzhao@google.com/ Link: https://lkml.kernel.org/r/20210122220600.906146-4-yuzhao@google.com Signed-off-by: Yu Zhao Cc: Alex Shi Cc: Hugh Dickins Cc: Johannes Weiner Cc: Matthew Wilcox Cc: Michal Hocko Cc: Roman Gushchin Cc: Vladimir Davydov Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- include/linux/mm_inline.h | 8 ++++++-- mm/swap.c | 15 +++++++-------- mm/vmscan.c | 6 ++---- 3 files changed, 15 insertions(+), 14 deletions(-) --- a/include/linux/mm_inline.h~mm-dont-pass-enum-lru_list-to-lru-list-addition-functions +++ a/include/linux/mm_inline.h @@ -106,15 +106,19 @@ static __always_inline enum lru_list pag } static __always_inline void add_page_to_lru_list(struct page *page, - struct lruvec *lruvec, enum lru_list lru) + struct lruvec *lruvec) { + enum lru_list lru = page_lru(page); + update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page)); list_add(&page->lru, &lruvec->lists[lru]); } static __always_inline void add_page_to_lru_list_tail(struct page *page, - struct lruvec *lruvec, enum lru_list lru) + struct lruvec *lruvec) { + enum lru_list lru = page_lru(page); + update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page)); list_add_tail(&page->lru, &lruvec->lists[lru]); } --- a/mm/swap.c~mm-dont-pass-enum-lru_list-to-lru-list-addition-functions +++ a/mm/swap.c @@ -231,7 +231,7 @@ static void pagevec_move_tail_fn(struct if (!PageUnevictable(page)) { del_page_from_lru_list(page, lruvec, page_lru(page)); ClearPageActive(page); - add_page_to_lru_list_tail(page, lruvec, page_lru(page)); + add_page_to_lru_list_tail(page, lruvec); __count_vm_events(PGROTATED, thp_nr_pages(page)); } } @@ -313,8 +313,7 @@ static void __activate_page(struct page del_page_from_lru_list(page, lruvec, lru); SetPageActive(page); - lru += LRU_ACTIVE; - add_page_to_lru_list(page, lruvec, lru); + add_page_to_lru_list(page, lruvec); trace_mm_lru_activate(page); __count_vm_events(PGACTIVATE, nr_pages); @@ -543,14 +542,14 @@ static void lru_deactivate_file_fn(struc * It can make readahead confusing. But race window * is _really_ small and it's non-critical problem. */ - add_page_to_lru_list(page, lruvec, lru); + add_page_to_lru_list(page, lruvec); SetPageReclaim(page); } else { /* * The page's writeback ends up during pagevec * We moves tha page into tail of inactive. */ - add_page_to_lru_list_tail(page, lruvec, lru); + add_page_to_lru_list_tail(page, lruvec); __count_vm_events(PGROTATED, nr_pages); } @@ -570,7 +569,7 @@ static void lru_deactivate_fn(struct pag del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE); ClearPageActive(page); ClearPageReferenced(page); - add_page_to_lru_list(page, lruvec, lru); + add_page_to_lru_list(page, lruvec); __count_vm_events(PGDEACTIVATE, nr_pages); __count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, @@ -595,7 +594,7 @@ static void lru_lazyfree_fn(struct page * anonymous pages */ ClearPageSwapBacked(page); - add_page_to_lru_list(page, lruvec, LRU_INACTIVE_FILE); + add_page_to_lru_list(page, lruvec); __count_vm_events(PGLAZYFREE, nr_pages); __count_memcg_events(lruvec_memcg(lruvec), PGLAZYFREE, @@ -1005,7 +1004,7 @@ static void __pagevec_lru_add_fn(struct __count_vm_events(UNEVICTABLE_PGCULLED, nr_pages); } - add_page_to_lru_list(page, lruvec, lru); + add_page_to_lru_list(page, lruvec); trace_mm_lru_insertion(page, lru); } --- a/mm/vmscan.c~mm-dont-pass-enum-lru_list-to-lru-list-addition-functions +++ a/mm/vmscan.c @@ -1867,7 +1867,7 @@ static unsigned noinline_for_stack move_ * inhibits memcg migration). */ VM_BUG_ON_PAGE(!lruvec_holds_page_lru_lock(page, lruvec), page); - add_page_to_lru_list(page, lruvec, page_lru(page)); + add_page_to_lru_list(page, lruvec); nr_pages = thp_nr_pages(page); nr_moved += nr_pages; if (PageActive(page)) @@ -4282,12 +4282,10 @@ void check_move_unevictable_pages(struct lruvec = relock_page_lruvec_irq(page, lruvec); if (page_evictable(page) && PageUnevictable(page)) { - enum lru_list lru = page_lru_base_type(page); - VM_BUG_ON_PAGE(PageActive(page), page); ClearPageUnevictable(page); del_page_from_lru_list(page, lruvec, LRU_UNEVICTABLE); - add_page_to_lru_list(page, lruvec, lru); + add_page_to_lru_list(page, lruvec); pgrescued += nr_pages; } SetPageLRU(page); _