From nobody Tue Jun 30 19:06:51 2026 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 F138EC433EF for ; Tue, 11 Jan 2022 05:53:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347823AbiAKFxo (ORCPT ); Tue, 11 Jan 2022 00:53:44 -0500 Received: from foss.arm.com ([217.140.110.172]:42064 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347510AbiAKFxk (ORCPT ); Tue, 11 Jan 2022 00:53:40 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D96181FB; Mon, 10 Jan 2022 21:53:39 -0800 (PST) Received: from p8cg001049571a15.arm.com (unknown [10.163.72.245]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C024A3F774; Mon, 10 Jan 2022 21:53:36 -0800 (PST) From: Anshuman Khandual To: linux-mm@kvack.org Cc: Anshuman Khandual , Jonathan Corbet , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm/debug_vm_pgtable: Update comments regarding migration swap entries Date: Tue, 11 Jan 2022 11:23:37 +0530 Message-Id: <1641880417-24848-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The commit 4dd845b5a3e5 ("mm/swapops: rework swap entry manipulation code") had changed migtation entry related helpers. Just update debug_vm_pgatble() synced documentation to reflect those changes. Cc: Jonathan Corbet Cc: Andrew Morton Cc: linux-doc@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- This applies on v5.16 Documentation/vm/arch_pgtable_helpers.rst | 14 +++++++------- mm/debug_vm_pgtable.c | 4 ++-- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/Documentation/vm/arch_pgtable_helpers.rst b/Documentation/vm/a= rch_pgtable_helpers.rst index 552567d863b8..b3166c33db39 100644 --- a/Documentation/vm/arch_pgtable_helpers.rst +++ b/Documentation/vm/arch_pgtable_helpers.rst @@ -247,12 +247,12 @@ SWAP Page Table Helpers | __swp_to_pmd_entry | Creates a mapped PMD from a swapped entry (a= rch) | +---------------------------+---------------------------------------------= -----+ | is_migration_entry | Tests a migration (read or write) swapped en= try | -+---------------------------+---------------------------------------------= -----+ -| is_write_migration_entry | Tests a write migration swapped entry = | -+---------------------------+---------------------------------------------= -----+ -| make_migration_entry_read | Converts into read migration swapped entry = | -+---------------------------+---------------------------------------------= -----+ -| make_migration_entry | Creates a migration swapped entry (read or w= rite)| -+---------------------------+---------------------------------------------= -----+ ++-------------------------------+-----------------------------------------= -----+ +| is_writable_migration_entry | Tests a write migration swapped entry = | ++-------------------------------+-----------------------------------------= -----+ +| make_readable_migration_entry | Creates a read migration swapped entry = | ++-------------------------------+-----------------------------------------= -----+ +| make_writable_migration_entry | Creates a write migration swapped entry = | ++-------------------------------+-----------------------------------------= -----+ =20 [1] https://lore.kernel.org/linux-mm/20181017020930.GN30832@redhat.com/ diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index 228e3954b90c..2a2b24e87877 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -888,8 +888,8 @@ static void __init swap_migration_tests(struct pgtable_= debug_args *args) pr_debug("Validating swap migration\n"); =20 /* - * make_migration_entry() expects given page to be - * locked, otherwise it stumbles upon a BUG_ON(). + * make_[readable|writable]_migration_entry() expects given page to + * be locked, otherwise it stumbles upon a BUG_ON(). */ __SetPageLocked(page); swp =3D make_writable_migration_entry(page_to_pfn(page)); --=20 2.20.1