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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 7DC22C55179 for ; Thu, 29 Oct 2020 10:45:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2988821D7D for ; Thu, 29 Oct 2020 10:45:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726977AbgJ2Kpr (ORCPT ); Thu, 29 Oct 2020 06:45:47 -0400 Received: from out30-57.freemail.mail.aliyun.com ([115.124.30.57]:34313 "EHLO out30-57.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726777AbgJ2Kpi (ORCPT ); Thu, 29 Oct 2020 06:45:38 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R191e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=21;SR=0;TI=SMTPD_---0UDXwDyN_1603968328; Received: from aliy80.localdomain(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0UDXwDyN_1603968328) by smtp.aliyun-inc.com(127.0.0.1); Thu, 29 Oct 2020 18:45:33 +0800 From: Alex Shi To: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, kirill@shutemov.name, alexander.duyck@gmail.com, rong.a.chen@intel.com, mhocko@suse.com, vdavydov.dev@gmail.com, shy828301@gmail.com Subject: [PATCH v20 10/20] mm/swap.c: fold vm event PGROTATED into pagevec_move_tail_fn Date: Thu, 29 Oct 2020 18:44:55 +0800 Message-Id: <1603968305-8026-11-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1603968305-8026-1-git-send-email-alex.shi@linux.alibaba.com> References: <1603968305-8026-1-git-send-email-alex.shi@linux.alibaba.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fold the PGROTATED event collection into pagevec_move_tail_fn call back func like other funcs does in pagevec_lru_move_fn. Thus we could save func call pagevec_move_tail(). Now all usage of pagevec_lru_move_fn are same and no needs of its 3rd parameter. It's just simply the calling. No functional change. [lkp@intel.com: found a build issue in the original patch, thanks] Signed-off-by: Alex Shi Acked-by: Hugh Dickins Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- mm/swap.c | 65 ++++++++++++++++++++++----------------------------------------- 1 file changed, 23 insertions(+), 42 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index 05bc9ff6d8c0..31fc3ebc1079 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -204,8 +204,7 @@ int get_kernel_page(unsigned long start, int write, struct page **pages) EXPORT_SYMBOL_GPL(get_kernel_page); static void pagevec_lru_move_fn(struct pagevec *pvec, - void (*move_fn)(struct page *page, struct lruvec *lruvec, void *arg), - void *arg) + void (*move_fn)(struct page *page, struct lruvec *lruvec)) { int i; struct pglist_data *pgdat = NULL; @@ -224,7 +223,7 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, } lruvec = mem_cgroup_page_lruvec(page, pgdat); - (*move_fn)(page, lruvec, arg); + (*move_fn)(page, lruvec); } if (pgdat) spin_unlock_irqrestore(&pgdat->lru_lock, flags); @@ -232,35 +231,22 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, pagevec_reinit(pvec); } -static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec, - void *arg) +static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec) { - int *pgmoved = arg; - if (PageLRU(page) && !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)); - (*pgmoved) += thp_nr_pages(page); + __count_vm_events(PGROTATED, thp_nr_pages(page)); } } /* - * pagevec_move_tail() must be called with IRQ disabled. - * Otherwise this may cause nasty races. - */ -static void pagevec_move_tail(struct pagevec *pvec) -{ - int pgmoved = 0; - - pagevec_lru_move_fn(pvec, pagevec_move_tail_fn, &pgmoved); - __count_vm_events(PGROTATED, pgmoved); -} - -/* * Writeback is about to end against a page which has been marked for immediate * reclaim. If it still appears to be reclaimable, move it to the tail of the * inactive list. + * + * rotate_reclaimable_page() must disable IRQs, to prevent nasty races. */ void rotate_reclaimable_page(struct page *page) { @@ -273,7 +259,7 @@ void rotate_reclaimable_page(struct page *page) local_lock_irqsave(&lru_rotate.lock, flags); pvec = this_cpu_ptr(&lru_rotate.pvec); if (!pagevec_add(pvec, page) || PageCompound(page)) - pagevec_move_tail(pvec); + pagevec_lru_move_fn(pvec, pagevec_move_tail_fn); local_unlock_irqrestore(&lru_rotate.lock, flags); } } @@ -315,8 +301,7 @@ void lru_note_cost_page(struct page *page) page_is_file_lru(page), thp_nr_pages(page)); } -static void __activate_page(struct page *page, struct lruvec *lruvec, - void *arg) +static void __activate_page(struct page *page, struct lruvec *lruvec) { if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) { int lru = page_lru_base_type(page); @@ -340,7 +325,7 @@ static void activate_page_drain(int cpu) struct pagevec *pvec = &per_cpu(lru_pvecs.activate_page, cpu); if (pagevec_count(pvec)) - pagevec_lru_move_fn(pvec, __activate_page, NULL); + pagevec_lru_move_fn(pvec, __activate_page); } static bool need_activate_page_drain(int cpu) @@ -358,7 +343,7 @@ static void activate_page(struct page *page) pvec = this_cpu_ptr(&lru_pvecs.activate_page); get_page(page); if (!pagevec_add(pvec, page) || PageCompound(page)) - pagevec_lru_move_fn(pvec, __activate_page, NULL); + pagevec_lru_move_fn(pvec, __activate_page); local_unlock(&lru_pvecs.lock); } } @@ -374,7 +359,7 @@ static void activate_page(struct page *page) page = compound_head(page); spin_lock_irq(&pgdat->lru_lock); - __activate_page(page, mem_cgroup_page_lruvec(page, pgdat), NULL); + __activate_page(page, mem_cgroup_page_lruvec(page, pgdat)); spin_unlock_irq(&pgdat->lru_lock); } #endif @@ -525,8 +510,7 @@ void lru_cache_add_inactive_or_unevictable(struct page *page, * be write it out by flusher threads as this is much more effective * than the single-page writeout from reclaim. */ -static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec, - void *arg) +static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec) { int lru; bool active; @@ -573,8 +557,7 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec, } } -static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec, - void *arg) +static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec) { if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) { int lru = page_lru_base_type(page); @@ -591,8 +574,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec, } } -static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec, - void *arg) +static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec) { if (PageLRU(page) && PageAnon(page) && PageSwapBacked(page) && !PageSwapCache(page) && !PageUnevictable(page)) { @@ -636,21 +618,21 @@ void lru_add_drain_cpu(int cpu) /* No harm done if a racing interrupt already did this */ local_lock_irqsave(&lru_rotate.lock, flags); - pagevec_move_tail(pvec); + pagevec_lru_move_fn(pvec, pagevec_move_tail_fn); local_unlock_irqrestore(&lru_rotate.lock, flags); } pvec = &per_cpu(lru_pvecs.lru_deactivate_file, cpu); if (pagevec_count(pvec)) - pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL); + pagevec_lru_move_fn(pvec, lru_deactivate_file_fn); pvec = &per_cpu(lru_pvecs.lru_deactivate, cpu); if (pagevec_count(pvec)) - pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL); + pagevec_lru_move_fn(pvec, lru_deactivate_fn); pvec = &per_cpu(lru_pvecs.lru_lazyfree, cpu); if (pagevec_count(pvec)) - pagevec_lru_move_fn(pvec, lru_lazyfree_fn, NULL); + pagevec_lru_move_fn(pvec, lru_lazyfree_fn); activate_page_drain(cpu); } @@ -679,7 +661,7 @@ void deactivate_file_page(struct page *page) pvec = this_cpu_ptr(&lru_pvecs.lru_deactivate_file); if (!pagevec_add(pvec, page) || PageCompound(page)) - pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL); + pagevec_lru_move_fn(pvec, lru_deactivate_file_fn); local_unlock(&lru_pvecs.lock); } } @@ -701,7 +683,7 @@ void deactivate_page(struct page *page) pvec = this_cpu_ptr(&lru_pvecs.lru_deactivate); get_page(page); if (!pagevec_add(pvec, page) || PageCompound(page)) - pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL); + pagevec_lru_move_fn(pvec, lru_deactivate_fn); local_unlock(&lru_pvecs.lock); } } @@ -723,7 +705,7 @@ void mark_page_lazyfree(struct page *page) pvec = this_cpu_ptr(&lru_pvecs.lru_lazyfree); get_page(page); if (!pagevec_add(pvec, page) || PageCompound(page)) - pagevec_lru_move_fn(pvec, lru_lazyfree_fn, NULL); + pagevec_lru_move_fn(pvec, lru_lazyfree_fn); local_unlock(&lru_pvecs.lock); } } @@ -974,8 +956,7 @@ void __pagevec_release(struct pagevec *pvec) } EXPORT_SYMBOL(__pagevec_release); -static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec, - void *arg) +static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec) { enum lru_list lru; int was_unevictable = TestClearPageUnevictable(page); @@ -1034,7 +1015,7 @@ static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec, */ void __pagevec_lru_add(struct pagevec *pvec) { - pagevec_lru_move_fn(pvec, __pagevec_lru_add_fn, NULL); + pagevec_lru_move_fn(pvec, __pagevec_lru_add_fn); } /** -- 1.8.3.1