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 CBC2BE94125 for ; Fri, 6 Oct 2023 21:47:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233789AbjJFVro (ORCPT ); Fri, 6 Oct 2023 17:47:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233828AbjJFVrb (ORCPT ); Fri, 6 Oct 2023 17:47:31 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89F0212A for ; Fri, 6 Oct 2023 14:47:29 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9A7AC433C9; Fri, 6 Oct 2023 21:47:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1696628849; bh=4LE8FhYz1iH+O+gBRtI+/mRQQYyFTwT/TLWqq5w5eUk=; h=Date:To:From:Subject:From; b=vudoLC6apA9dEkSeMuZF/i5QClr7okXlbudYVsl+ijG5I6TohA70pat0PJfzeeSRY kOu0v4erQpOjfvcobvAX0yux7JH7e4SfzbMNEI8JJYVvugaBTlP0XR5YmnHmy/ma6j LVavPQDzDgGPRSmaoi4JUrjBjUkLDbXCKynlKj94= Date: Fri, 06 Oct 2023 14:47:26 -0700 To: mm-commits@vger.kernel.org, jgg@nvidia.com, apopple@nvidia.com, jannh@google.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-document-mmu_notifier_invalidate_range_start_nonblock.patch removed from -mm tree Message-Id: <20231006214728.C9A7AC433C9@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: mm: document mmu_notifier_invalidate_range_start_nonblock() has been removed from the -mm tree. Its filename was mm-document-mmu_notifier_invalidate_range_start_nonblock.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Jann Horn Subject: mm: document mmu_notifier_invalidate_range_start_nonblock() Date: Mon, 18 Sep 2023 22:18:32 +0200 Document what mmu_notifier_invalidate_range_start_nonblock() is for. Also add a __must_check annotation to signal that callers must bail out if a notifier vetoes the operation. Link: https://lkml.kernel.org/r/20230918201832.265108-1-jannh@google.com Signed-off-by: Jann Horn Reviewed-by: Jason Gunthorpe Reviewed-by: Alistair Popple Signed-off-by: Andrew Morton --- include/linux/mmu_notifier.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) --- a/include/linux/mmu_notifier.h~mm-document-mmu_notifier_invalidate_range_start_nonblock +++ a/include/linux/mmu_notifier.h @@ -459,7 +459,14 @@ mmu_notifier_invalidate_range_start(stru lock_map_release(&__mmu_notifier_invalidate_range_start_map); } -static inline int +/* + * This version of mmu_notifier_invalidate_range_start() avoids blocking, but it + * can return an error if a notifier can't proceed without blocking, in which + * case you're not allowed to modify PTEs in the specified range. + * + * This is mainly intended for OOM handling. + */ +static inline int __must_check mmu_notifier_invalidate_range_start_nonblock(struct mmu_notifier_range *range) { int ret = 0; _ Patches currently in -mm which might be from jannh@google.com are