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 X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 216EDC433E2 for ; Tue, 21 Jul 2020 21:06:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7C2A20720 for ; Tue, 21 Jul 2020 21:06:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595365617; bh=V4eKBJgJBYr3r6zjnNu/Wx/1lFfSCmAIiXuIegghKaY=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=Jsbbm3ieBdHKFk4SyP95E+IV6UkMsXZi3iF0cSA3qm8KpBrdDTe3ybwR3SybPOGMq +BZ6Vce2YsVBHw8lXhz+y7F0G/Xrayw8NX4fv1LPrxSDt9WpWqUdmjgtTfAo5gFW1w aDXM6mVjgG+w/RXiNZdkAaT4lvOd8Kfdq3H8AuDs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731042AbgGUVG5 (ORCPT ); Tue, 21 Jul 2020 17:06:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:58510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726658AbgGUVG5 (ORCPT ); Tue, 21 Jul 2020 17:06:57 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D4C6F20729; Tue, 21 Jul 2020 21:06:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595365617; bh=V4eKBJgJBYr3r6zjnNu/Wx/1lFfSCmAIiXuIegghKaY=; h=Date:From:To:Subject:In-Reply-To:From; b=se0h3x9Qudpoc2MZXE8OAKxEd5sK6UW9NrFh9ts6newbCDjtqx0AZvuGduKAwiHoH xusZe8qHEzGzTxyyIId02BhnpORdz4VMk+P0p3v832z4EbnfAfvDYi07kJdZHho4Vc 2UGrrVuMtud4KIb388kHrtePA4I9Z3vQdi+0LAnk= Date: Tue, 21 Jul 2020 14:06:56 -0700 From: Andrew Morton To: akpm@linux-foundation.org, mm-commits@vger.kernel.org, peterz@infradead.org Subject: + mm-fix-kthread_use_mm-vs-tlb-invalidate-fix.patch added to -mm tree Message-ID: <20200721210656.jAE6TQnxP%akpm@linux-foundation.org> In-Reply-To: <20200703151445.b6a0cfee402c7c5c4651f1b1@linux-foundation.org> User-Agent: s-nail v14.8.16 Sender: mm-commits-owner@vger.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-fix-kthread_use_mm-vs-tlb-invalidate-fix has been added to the -mm tree. Its filename is mm-fix-kthread_use_mm-vs-tlb-invalidate-fix.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-fix-kthread_use_mm-vs-tlb-invalidate-fix.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-fix-kthread_use_mm-vs-tlb-invalidate-fix.patch 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 and is updated there every 3-4 working days ------------------------------------------------------ From: Andrew Morton Subject: mm-fix-kthread_use_mm-vs-tlb-invalidate-fix add comment Cc: Peter Zijlstra (Intel) Signed-off-by: Andrew Morton --- kernel/kthread.c | 1 + 1 file changed, 1 insertion(+) --- a/kernel/kthread.c~mm-fix-kthread_use_mm-vs-tlb-invalidate-fix +++ a/kernel/kthread.c @@ -1239,6 +1239,7 @@ void kthread_use_mm(struct mm_struct *mm WARN_ON_ONCE(tsk->mm); task_lock(tsk); + /* Hold off tlb flush IPIs while switching mm's */ local_irq_disable(); active_mm = tsk->active_mm; if (active_mm != mm) { _ Patches currently in -mm which might be from akpm@linux-foundation.org are mm-close-race-between-munmap-and-expand_upwards-downwards-fix.patch mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix.patch io-mapping-indicate-mapping-failure-fix.patch mm-fix-kthread_use_mm-vs-tlb-invalidate-fix.patch mm.patch mm-handle-page-mapping-better-in-dump_page-fix.patch mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix.patch mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix-fix.patch mm-thp-replace-http-links-with-https-ones-fix.patch mm-vmstat-add-events-for-thp-migration-without-split-fix.patch mmhwpoison-rework-soft-offline-for-in-use-pages-fix.patch mm-vmstat-fix-proc-sys-vm-stat_refresh-generating-false-warnings-fix-2.patch linux-next-rejects.patch mm-migrate-clear-__gfp_reclaim-to-make-the-migration-callback-consistent-with-regular-thp-allocations-fix.patch mm-madvise-introduce-process_madvise-syscall-an-external-memory-hinting-api-fix.patch mm-madvise-introduce-process_madvise-syscall-an-external-memory-hinting-api-fix-2.patch kernel-forkc-export-kernel_thread-to-modules.patch