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 CFD26C7EE2E for ; Mon, 12 Jun 2023 21:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230095AbjFLV2M (ORCPT ); Mon, 12 Jun 2023 17:28:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231437AbjFLV1g (ORCPT ); Mon, 12 Jun 2023 17:27:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C5F212A for ; Mon, 12 Jun 2023 14:27:20 -0700 (PDT) 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 0A6BF621D6 for ; Mon, 12 Jun 2023 21:27:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5874EC433EF; Mon, 12 Jun 2023 21:27:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1686605239; bh=HnE7U7yjxvMZghwfdYYX6z9ONE0t12YUTsBbhm9tI3k=; h=Date:To:From:Subject:From; b=zcswocXFawNdxmdx4tc+yRc2NZ5aTIJZTpCxg7EW302ykg8CCKIUJemUZ30f7l1Q6 d+ZtkqwKwgOecyjPmZGoaMFg8//NlDVDEM5rc0Ey2fQS7iuyMLa8Uw/xacSzn20w6+ cRBdBN4LE6oF5GVjWxoihqIcOa37d0YB0GWboxos= Date: Mon, 12 Jun 2023 14:27:18 -0700 To: mm-commits@vger.kernel.org, zhangpeng.00@bytedance.com, Liam.Howlett@oracle.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-remove-prev-check-from-do_vmi_align_munmap.patch added to mm-unstable branch Message-Id: <20230612212719.5874EC433EF@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm: remove prev check from do_vmi_align_munmap() has been added to the -mm mm-unstable branch. Its filename is mm-remove-prev-check-from-do_vmi_align_munmap.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-prev-check-from-do_vmi_align_munmap.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: "Liam R. Howlett" Subject: mm: remove prev check from do_vmi_align_munmap() Date: Mon, 12 Jun 2023 16:39:42 -0400 If the prev does not exist, the vma iterator will be set to MAS_NONE, which will be treated as a MAS_START when the mas_next or mas_find is used. In this case, the next caller will be the vma iterator, which uses mas_find() under the hood and will now do what the user expects. Link: https://lkml.kernel.org/r/20230612203953.2093911-6-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Cc: Peng Zhang Signed-off-by: Andrew Morton --- mm/mmap.c | 2 -- 1 file changed, 2 deletions(-) --- a/mm/mmap.c~mm-remove-prev-check-from-do_vmi_align_munmap +++ a/mm/mmap.c @@ -2399,8 +2399,6 @@ do_vmi_align_munmap(struct vma_iterator } prev = vma_prev(vmi); - if (unlikely((!prev))) - vma_iter_set(vmi, start); /* * Detach a range of VMAs from the mm. Using next as a temp variable as _ Patches currently in -mm which might be from Liam.Howlett@oracle.com are mm-mprotect-fix-do_mprotect_pkey-limit-check.patch maple_tree-add-benchmarking-for-mas_for_each.patch maple_tree-add-benchmarking-for-mas_prev.patch mm-move-unmap_vmas-declaration-to-internal-header.patch mm-change-do_vmi_align_munmap-side-tree-index.patch mm-remove-prev-check-from-do_vmi_align_munmap.patch maple_tree-introduce-__mas_set_range.patch mm-remove-re-walk-from-mmap_region.patch maple_tree-adjust-node-allocation-on-mas_rebalance.patch maple_tree-re-introduce-entry-to-mas_preallocate-arguments.patch mm-use-vma_iter_clear_gfp-in-nommu.patch mm-set-up-vma-iterator-for-vma_iter_prealloc-calls.patch maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null.patch maple_tree-update-mas_preallocate-testing.patch maple_tree-refine-mas_preallocate-node-calculations.patch maple_tree-reduce-resets-during-store-setup.patch mm-mmap-change-vma-iteration-order-in-do_vmi_align_munmap.patch userfaultfd-fix-regression-in-userfaultfd_unmap_prep.patch