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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 37B43C4320A for ; Thu, 19 Aug 2021 03:20:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2083561107 for ; Thu, 19 Aug 2021 03:20:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236350AbhHSDUw (ORCPT ); Wed, 18 Aug 2021 23:20:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236203AbhHSDUn (ORCPT ); Wed, 18 Aug 2021 23:20:43 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BD9EC06179A for ; Wed, 18 Aug 2021 20:20:08 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id t42so1610955pfg.12 for ; Wed, 18 Aug 2021 20:20:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nbYzfQrconcsR+4RpHS7arH5FSzBDfWHN7dK/RaMaFw=; b=YOM/CjZFQYUfZyT2Fc4Nn6IQVqf1WWt7EkHXDVMuyNb9SvyKWGL4qXbtcpAg4Sg89e oKOQEQQ11KPcU9hGocbQx/bTVUA0qlaM2sgIc0MH6y/Vd2e6ytt6c8FPfDjSIrOwWG3X rOogyzQzLB/Sbb4E1vsRCSOf0MYhhEHsy+0u9P2z7HeBDcvETioDnM01k+OJ9DwHEb1a zEmY73foZoQLq/cmt4/+CftyhY4k06xm1Ymfa9qbY94zjbReMLua3J0NFbWd9xgOHZ5g he3vwICKNs+p1+Nd98SAa9UrwjxADENYVRUtjWlPf5DDby19E/Q1iXTFOMoPgooL28O2 lr1A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nbYzfQrconcsR+4RpHS7arH5FSzBDfWHN7dK/RaMaFw=; b=S/8+QrGCTzO79aYzv4KIktd3MjzZE0Blm4FGZRKo8JxpJIdxQoaRSViJh4mF9YWLPc VdZ/6xAp/38zaDgvspn0n3w9we2wC/VMbEqjXSd1RODuRHOHeF8N9LPi6/Q+p5QYuGu9 VHx7xhWRHsOuxAmQbt2dIs4ilq70GJaeCQWzWrwd2IbuUPZw1LU3UQxnPT9RAqpEa4+c RReMxinQwzCjILwG20GmAaN1huqt5TxcSRNqa2uCcK2xR0VhkVYr4tb1AjDzCvvCmca/ 7PE0FyEAuhhlLtk2rtK75/bxp5zLvDSSbg/4UYdbRa/zH8viaLMzm2/zSGXPZyqq1bhW WdbQ== X-Gm-Message-State: AOAM532Tx+705qU/Rf1Fa7fUM4SEXMDzMNDjL2ikgEIz9yilXT7VevEs dSlS4LZxnE9byD2Nu72JiOA3gQ== X-Google-Smtp-Source: ABdhPJycFOiVUzzFfHyRJZNon6CB7juNZC+TEA1Mqbc1P3fyFSV4ULUnK2OqTYn5F+dvtiLDyjMJ4A== X-Received: by 2002:a65:6107:: with SMTP id z7mr11924617pgu.43.1629343207673; Wed, 18 Aug 2021 20:20:07 -0700 (PDT) Received: from localhost.localdomain ([139.177.225.255]) by smtp.gmail.com with ESMTPSA id k3sm1261276pfc.16.2021.08.18.20.20.03 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Aug 2021 20:20:07 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, tglx@linutronix.de, hannes@cmpxchg.org, mhocko@kernel.org, vdavydov.dev@gmail.com, kirill.shutemov@linux.intel.com, mika.penttila@nextfour.com, david@redhat.com Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, songmuchun@bytedance.com, Qi Zheng Subject: [PATCH v2 3/9] mm: rework the parameter of lock_page_or_retry() Date: Thu, 19 Aug 2021 11:18:52 +0800 Message-Id: <20210819031858.98043-4-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20210819031858.98043-1-zhengqi.arch@bytedance.com> References: <20210819031858.98043-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org we need the vmf in lock_page_or_retry() in the subsequent patch, so pass in it directly. Signed-off-by: Qi Zheng --- include/linux/pagemap.h | 8 +++----- mm/filemap.c | 6 ++++-- mm/memory.c | 4 ++-- 3 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index c36292181a21..dbb4dd6bb608 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -710,8 +710,7 @@ static inline bool wake_page_match(struct wait_page_queue *wait_page, void __folio_lock(struct folio *folio); int __folio_lock_killable(struct folio *folio); -bool __folio_lock_or_retry(struct folio *folio, struct mm_struct *mm, - unsigned int flags); +bool __folio_lock_or_retry(struct folio *folio, struct vm_fault *vmf); void unlock_page(struct page *page); void folio_unlock(struct folio *folio); @@ -773,14 +772,13 @@ static inline int lock_page_killable(struct page *page) * Return value and mmap_lock implications depend on flags; see * __folio_lock_or_retry(). */ -static inline bool lock_page_or_retry(struct page *page, struct mm_struct *mm, - unsigned int flags) +static inline bool lock_page_or_retry(struct page *page, struct vm_fault *vmf) { struct folio *folio; might_sleep(); folio = page_folio(page); - return folio_trylock(folio) || __folio_lock_or_retry(folio, mm, flags); + return folio_trylock(folio) || __folio_lock_or_retry(folio, vmf); } /* diff --git a/mm/filemap.c b/mm/filemap.c index 9f773059c6dc..eeac0e119cf5 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1688,9 +1688,11 @@ static int __folio_lock_async(struct folio *folio, struct wait_page_queue *wait) * If neither ALLOW_RETRY nor KILLABLE are set, will always return 1 * with the folio locked and the mmap_lock unperturbed. */ -bool __folio_lock_or_retry(struct folio *folio, struct mm_struct *mm, - unsigned int flags) +bool __folio_lock_or_retry(struct folio *folio, struct vm_fault *vmf) { + unsigned int flags = vmf->flags; + struct mm_struct *mm = vmf->vma->vm_mm; + if (fault_flag_allow_retry_first(flags)) { /* * CAUTION! In this case, mmap_lock is not released diff --git a/mm/memory.c b/mm/memory.c index 9c7534187454..d2aaa85b840c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3451,7 +3451,7 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; - if (!lock_page_or_retry(page, vma->vm_mm, vmf->flags)) + if (!lock_page_or_retry(page, vmf)) return VM_FAULT_RETRY; mmu_notifier_range_init_owner(&range, MMU_NOTIFY_EXCLUSIVE, 0, vma, vma->vm_mm, vmf->address & PAGE_MASK, @@ -3584,7 +3584,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf) goto out_release; } - locked = lock_page_or_retry(page, vma->vm_mm, vmf->flags); + locked = lock_page_or_retry(page, vmf); delayacct_clear_flag(current, DELAYACCT_PF_SWAPIN); if (!locked) { -- 2.11.0