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=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 41FB2C47082 for ; Tue, 8 Jun 2021 14:58:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D5CC61285 for ; Tue, 8 Jun 2021 14:58:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233288AbhFHPAn (ORCPT ); Tue, 8 Jun 2021 11:00:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:36840 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233475AbhFHPAn (ORCPT ); Tue, 8 Jun 2021 11:00:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C490461183; Tue, 8 Jun 2021 14:58:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623164330; bh=Rko9zOLDsqdYcZOkT0K37pGxicqfRWlz7uPLuW9AA2A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tin/F90kD/NQtf9KaZhzUTAsVzozy0sIBTVcTs/6RHER0X6yjWqXKkf0Cja8spYrQ J5OKk7gBFMZCQ1h3UCZIkqXk0itxK5PmylIHWUeykTz94Zts3MtYRQtP3q1aN13I0i 0Ms7a5zjBDBrkL02FO1A9ciiHamDYSCt8Nj6YFzk= Date: Tue, 8 Jun 2021 16:58:47 +0200 From: Greg KH To: "Matthew Wilcox (Oracle)" Cc: stable@vger.kernel.org Subject: Re: [5.4 PATCH 0/4] Fix a CONFIG_READ_ONLY_THP_FOR_FS bug Message-ID: References: <20210607200845.3860579-1-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210607200845.3860579-1-willy@infradead.org> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Mon, Jun 07, 2021 at 09:08:41PM +0100, Matthew Wilcox (Oracle) wrote: > This experimental feature has had a few bugs, but it has enough of > a performance effect that customers are actually asking for it to be > enabled. So we should apply this upstream bugfix that needs a little > massaging to backport. The first three patches enable the fix in the > fourth patch. I've run the XArray test-suite after applying these > patches, and it continues to pass. > > Matthew Wilcox (Oracle) (4): > mm: add thp_order > XArray: add xa_get_order > XArray: add xas_split > mm/filemap: fix storing to a THP shadow entry > > Documentation/core-api/xarray.rst | 16 ++- > include/linux/huge_mm.h | 19 +++ > include/linux/xarray.h | 22 ++++ > lib/test_xarray.c | 65 ++++++++++ > lib/xarray.c | 208 ++++++++++++++++++++++++++++-- > mm/filemap.c | 37 ++++-- > 6 files changed, 342 insertions(+), 25 deletions(-) > > -- > 2.30.2 > Now queued up, thanks. greg k-h