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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 68CCF1088E73 for ; Thu, 19 Mar 2026 03:24:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6263C6B03C9; Wed, 18 Mar 2026 23:24:31 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 401636B03C8; Wed, 18 Mar 2026 23:24:31 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 253B16B03C9; Wed, 18 Mar 2026 23:24:31 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 03CCD6B03C6 for ; Wed, 18 Mar 2026 23:24:31 -0400 (EDT) Received: from smtpin29.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id B0E09140347 for ; Thu, 19 Mar 2026 03:24:30 +0000 (UTC) X-FDA: 84561369900.29.D05AEAB Received: from out30-113.freemail.mail.aliyun.com (out30-113.freemail.mail.aliyun.com [115.124.30.113]) by imf14.hostedemail.com (Postfix) with ESMTP id 7A0D210000B for ; Thu, 19 Mar 2026 03:24:28 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=linux.alibaba.com header.s=default header.b="RReSa4/D"; spf=pass (imf14.hostedemail.com: domain of baolin.wang@linux.alibaba.com designates 115.124.30.113 as permitted sender) smtp.mailfrom=baolin.wang@linux.alibaba.com; dmarc=pass (policy=none) header.from=linux.alibaba.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1773890668; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=wZ0qad0Pm6XxHYmd2R3Uz8rTNICSFBFKR16MZOCoaNo=; b=5h33OqbSWFvQv0MORcOJg06IQrpQRQGwQ3fdjz/xikgcWRO/cXYbuG6Vg5FnzmfEucN9GI ziV+Fx3mMsYhdiFzB/PaGSPVe/VHRU1yKJmvSDSvghkp8ODBUXnw8WMrODkxaMj1xsbika 6pdv+tGF+Cl+mggPfYMCNmPbKfY9pVo= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=linux.alibaba.com header.s=default header.b="RReSa4/D"; spf=pass (imf14.hostedemail.com: domain of baolin.wang@linux.alibaba.com designates 115.124.30.113 as permitted sender) smtp.mailfrom=baolin.wang@linux.alibaba.com; dmarc=pass (policy=none) header.from=linux.alibaba.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773890668; a=rsa-sha256; cv=none; b=LVSM4Oi3/PqzHKJoGCLqRPOQP/GsldvRKIxQAHXLHKW9cGkEaLJaI6eFSDyIgTuKMmYf52 S85BmnGKHmHYafdMfEMpi8ucisJnaHvYXxffYc1ZLC9+AL4MbvhAsx456LEeWoTklidUts uoKcaIVsZD6q3xGB5gZpIzsBOgHlBhs= DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1773890663; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=wZ0qad0Pm6XxHYmd2R3Uz8rTNICSFBFKR16MZOCoaNo=; b=RReSa4/D4qAiZLUALt4pgzPc1AW+fu/yDbF6zaeoD5dxv8YfbWgLj76TLNnIFgRIXXMM1hohNRMQjh5J+KRIlntl3pRHnNvcHSgoqdI72yn+At3wRnrw/ApxnFO+5q66kf0DXEvI748nAg5C4gkT0Ro8twSQBTA//CElk7ACFao= X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033032089153;MF=baolin.wang@linux.alibaba.com;NM=1;PH=DS;RN=18;SR=0;TI=SMTPD_---0X.Gt-CL_1773890660; Received: from localhost(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0X.Gt-CL_1773890660 cluster:ay36) by smtp.aliyun-inc.com; Thu, 19 Mar 2026 11:24:21 +0800 From: Baolin Wang To: akpm@linux-foundation.org, david@kernel.org Cc: ljs@kernel.org, Liam.Howlett@oracle.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, baolin.wang@linux.alibaba.com, linux-arm-kernel@lists.infradead.org, x86@kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org (open), linux-kernel@vger.kernel.org Subject: [PATCH 3/6] mm: change to return bool for pmdp_test_and_clear_young() Date: Thu, 19 Mar 2026 11:24:02 +0800 Message-ID: <8025b898d0841a4bcbd766998959b4e2ae4d4abc.1773890510.git.baolin.wang@linux.alibaba.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 7A0D210000B X-Rspamd-Server: rspam07 X-Stat-Signature: 5auwe8b13w7c1ocz4m9i74qdyb3ygzg5 X-Rspam-User: X-HE-Tag: 1773890668-946478 X-HE-Meta: U2FsdGVkX1+b+zfuZ2SLRCcUSZ9kz3vEu5YYarXHbbGsaVtpNPfHecYRrQ8oFq/aQEAf2aFynRjgy/RrRf/UcSpBIdnPDicR5JX5XJC37MG8R2A7S9BHWk7etu8HAmuE6b98SnmPSjwLym3fcHfHN1yWtZuWEphd6Ybkn4LEW6lMCn5E4N02L06pQZ6UuuPilWyNIRRu7ChhdgENqnZS/ren9f6ujLLR74tQ4qgwmLUyXImAW0duMiZPwaUZ28eJK5R9pg+zcoh45EVI5Gq01Xmz4DxQoTqD6DfCG9W2c16LStlqFkjxZ2mTuC6q6Yv0nAHz5iAk8NMUqwhdGgQDzyj5zxATgr3wmYTaCCGMpgh+/lsxq2IqhdvUiBuI4BSNYSLJb/1KRkNipMEGO+HeJhAehKJiAtkQSGjKpGW7+JUixnB6/Usm8q7duC57ltLGSx5cIoszA/YmHLubHCe/uDWC+h8G27nsy3Ckker+yUJmBb65wveRWDisXoEx6pkyKt3orfNWD32YOFuDa2fiC7aRu2BZWpBgFUCXLGxb2vrVKbz5BD2Pb9LPm2XPqcxJTVAKRd8KOsi/sYKivsARm4jPA0TGaksqHwKhp+FFabo7qhFhq1a9Ulyh7zfMTTxF0HY++RT9hHHkO2BWzAOVggqFS5u6/gYq3QboMhxKMNlZ2UXsbQHsZSu45icm0JHwhpN/2UwdAfyJxmmgpP9XUjBp/yLu8dsBPygG3UjyLlQLiuNLvotWw5TiM2V5rRizM52CFx956cEjuUNshO2UUzIbWtf/j4itDQfpPe42fBvxE1OkxI2sieWtznFon62CslefJoqFvAvS6BE+/cS3DtmGRRl+yP1r1aG1J0WRGQtPfpZS7m3cTDdBrbrj8w3BFMRh/PLa6ODTBVr3aMO24aPgGW78PDUc2nU1JaBnYywZsWEoT+QqjjNXdzRLmsGg+nXCUmJmtvGqJkP/fIw u0Pk3jr3 +EkBjvmYkL24klV5r13ZsPR/EzVIw3mmBNcWymD1ph7suQ0r0HeU33SKLAB3U3ZAqtUVMWU1UDu/QSMV3gLvM85MsvZliy5MQc+1ybU3ga21z1GuvO91Hwy0eHec7jn3OtGK0capm85m9qRyD3QOM+0ja6amcOikrXsPmXyNZzfjGrKptucyqdE5FqLyfuI6xRwTpRhdbA0tt+XcrqaiaheWEHVn4ZNnD+74W5pTZIsGkGOwKymHX+/gDQn7ly4r1YtHqJb5p2pNAmh3/KgcmNQr+K7dOvjhyrMbJTYl15dlN0WHrZoNoe6j56x6ZInt+Em3ks7PRskgm04HWffkPdG0NAQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Callers use pmdp_test_and_clear_young() to clear the young flag and check whether it was set for this PMD entry. Change the return type to bool to make the intention clearer. Signed-off-by: Baolin Wang --- arch/arm64/include/asm/pgtable.h | 6 +++--- arch/powerpc/include/asm/book3s/64/pgtable.h | 10 +++++----- arch/powerpc/mm/book3s64/pgtable.c | 4 ++-- arch/riscv/include/asm/pgtable.h | 2 +- arch/s390/include/asm/pgtable.h | 4 ++-- arch/x86/include/asm/pgtable.h | 4 ++-- arch/x86/mm/pgtable.c | 6 +++--- include/linux/pgtable.h | 19 +++++++++---------- 8 files changed, 27 insertions(+), 28 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 393a9d1873f6..7ea16f6ad564 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1321,9 +1321,9 @@ static inline bool __ptep_clear_flush_young(struct vm_area_struct *vma, #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG) #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG -static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, - pmd_t *pmdp) +static inline bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, + pmd_t *pmdp) { /* Operation applies to PMD table entry only if FEAT_HAFT is enabled */ VM_WARN_ON(pmd_table(READ_ONCE(*pmdp)) && !system_supports_haft()); diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 25e3a86943e2..0f34011665a6 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -1161,13 +1161,13 @@ pud_hugepage_update(struct mm_struct *mm, unsigned long addr, pud_t *pudp, * For radix we should always find H_PAGE_HASHPTE zero. Hence * the below will work for radix too */ -static inline int __pmdp_test_and_clear_young(struct mm_struct *mm, - unsigned long addr, pmd_t *pmdp) +static inline bool __pmdp_test_and_clear_young(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp) { unsigned long old; if ((pmd_raw(*pmdp) & cpu_to_be64(_PAGE_ACCESSED | H_PAGE_HASHPTE)) == 0) - return 0; + return false; old = pmd_hugepage_update(mm, addr, pmdp, _PAGE_ACCESSED, 0); return ((old & _PAGE_ACCESSED) != 0); } @@ -1300,8 +1300,8 @@ extern int pudp_set_access_flags(struct vm_area_struct *vma, pud_t entry, int dirty); #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG -extern int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp); +extern bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); #define __HAVE_ARCH_PUDP_TEST_AND_CLEAR_YOUNG extern int pudp_test_and_clear_young(struct vm_area_struct *vma, unsigned long address, pud_t *pudp); diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c index 4b09c04654a8..aed39bba891e 100644 --- a/arch/powerpc/mm/book3s64/pgtable.c +++ b/arch/powerpc/mm/book3s64/pgtable.c @@ -98,8 +98,8 @@ int pudp_set_access_flags(struct vm_area_struct *vma, unsigned long address, } -int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp) +bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) { return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp); } diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 11f57ccf6dc9..bac559d29036 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -1015,7 +1015,7 @@ static inline int pmdp_set_access_flags(struct vm_area_struct *vma, } #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG -static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, +static inline bool pmdp_test_and_clear_young(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { return ptep_test_and_clear_young(vma, address, (pte_t *)pmdp); diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index c9ab81caaf75..1f5efb7be71d 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1683,8 +1683,8 @@ static inline int pmdp_set_access_flags(struct vm_area_struct *vma, } #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG -static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long addr, pmd_t *pmdp) +static inline bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmdp) { pmd_t pmd = *pmdp; diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 554dea93eb99..bd02ee730a23 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1295,8 +1295,8 @@ extern int pudp_set_access_flags(struct vm_area_struct *vma, pud_t entry, int dirty); #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG -extern int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long addr, pmd_t *pmdp); +extern bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmdp); extern int pudp_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pud_t *pudp); diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 0007dc3d739e..10a5e0b2be36 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -456,10 +456,10 @@ bool ptep_test_and_clear_young(struct vm_area_struct *vma, } #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG) -int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long addr, pmd_t *pmdp) +bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long addr, pmd_t *pmdp) { - int ret = 0; + bool ret = false; if (pmd_young(*pmdp)) ret = test_and_clear_bit(_PAGE_BIT_ACCESSED, diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 1198e216fde3..e53220b0a9a3 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -507,25 +507,24 @@ static inline bool ptep_test_and_clear_young(struct vm_area_struct *vma, #ifndef __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG) -static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, - pmd_t *pmdp) +static inline bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) { pmd_t pmd = *pmdp; - int r = 1; + bool young = true; + if (!pmd_young(pmd)) - r = 0; + young = false; else set_pmd_at(vma->vm_mm, address, pmdp, pmd_mkold(pmd)); - return r; + return young; } #else -static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, - pmd_t *pmdp) +static inline bool pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) { BUILD_BUG(); - return 0; + return false; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG */ #endif -- 2.47.3