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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42DD9C433FE for ; Wed, 9 Nov 2022 01:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229517AbiKIB0l (ORCPT ); Tue, 8 Nov 2022 20:26:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229447AbiKIB0k (ORCPT ); Tue, 8 Nov 2022 20:26:40 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEEEC6034D for ; Tue, 8 Nov 2022 17:26:39 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 160BD61802 for ; Wed, 9 Nov 2022 01:26:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B41CC433D6; Wed, 9 Nov 2022 01:26:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1667957198; bh=eeL8RfLRnAEjc4BE2J71k8HU8F70gzh2OrB7l3pmj+k=; h=Date:To:From:Subject:From; b=sDOz5kXnMU1aT7/dR+pL47wcazVg9C0BJUiZR+IiWV6gVQuh0Uu6YvnNm0tEhTRLt NWH2vnFVMQAA+sgnECRKYCX1n4sf/L34rEfnULy7X3u1vgVggtK2iauL2EOjMeLwRv aGsx7W0VsLkiaIvK6yFkAXicwQivh9U4v5zhF95A= Date: Tue, 08 Nov 2022 17:26:37 -0800 To: mm-commits@vger.kernel.org, songmuchun@bytedance.com, naoya.horiguchi@linux.dev, mpe@ellerman.id.au, david@redhat.com, christophe.leroy@csgroup.eu, baolin.wang@linux.alibaba.com, aneesh.kumar@linux.ibm.com, mike.kravetz@oracle.com, akpm@linux-foundation.org From: Andrew Morton Subject: [folded-merged] hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v4.patch removed from -mm tree Message-Id: <20221109012638.6B41CC433D6@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v4 has been removed from the -mm tree. Its filename was hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v4.patch This patch was dropped because it was folded into hugetlb-simplify-hugetlb-handling-in-follow_page_mask.patch ------------------------------------------------------ From: Mike Kravetz Subject: hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v4 Date: Fri, 28 Oct 2022 11:11:08 -0700 remove vma (pmd sharing) locking as this can be called with FOLL_NOWAIT, per Peter Link: https://lkml.kernel.org/r/20221028181108.119432-1-mike.kravetz@oracle.com Signed-off-by: Mike Kravetz Suggested-by: David Hildenbrand Cc: Aneesh Kumar K.V Cc: Baolin Wang Cc: Christophe Leroy Cc: Michael Ellerman Cc: Muchun Song Cc: Naoya Horiguchi Signed-off-by: Andrew Morton --- mm/hugetlb.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) --- a/mm/hugetlb.c~hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v4 +++ a/mm/hugetlb.c @@ -6240,17 +6240,9 @@ struct page *hugetlb_follow_page_mask(st return NULL; retry: - /* - * vma lock prevents racing with another thread doing a pmd unshare. - * This keeps pte as returned by huge_pte_offset valid. - */ - hugetlb_vma_lock_read(vma); - pte = huge_pte_offset(mm, haddr, huge_page_size(h)); - if (!pte) { - hugetlb_vma_unlock_read(vma); + if (!pte) return NULL; - } ptl = huge_pte_lock(h, mm, pte); entry = huge_ptep_get(pte); @@ -6284,7 +6276,6 @@ retry: } out: spin_unlock(ptl); - hugetlb_vma_unlock_read(vma); return page; } _ Patches currently in -mm which might be from mike.kravetz@oracle.com are hugetlb-dont-delete-vma_lock-in-hugetlb-madv_dontneed-processing.patch hugetlb-simplify-hugetlb-handling-in-follow_page_mask.patch hugetlb-simplify-hugetlb-handling-in-follow_page_mask-v5.patch selftests-vm-update-hugetlb-madvise.patch