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 5D17AC04A94 for ; Thu, 3 Aug 2023 14:19:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235790AbjHCOTr (ORCPT ); Thu, 3 Aug 2023 10:19:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235694AbjHCOTp (ORCPT ); Thu, 3 Aug 2023 10:19:45 -0400 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 113ADF7 for ; Thu, 3 Aug 2023 07:19:44 -0700 (PDT) Received: from cwcc.thunk.org (pool-173-48-112-100.bstnma.fios.verizon.net [173.48.112.100]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 373EJZiX032677 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 3 Aug 2023 10:19:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1691072378; bh=u4qHYJE09OQX4SslI8PJB7iPS5V/V9gm5lYUAJt9N6k=; h=Date:From:Subject:Message-ID:MIME-Version:Content-Type; b=OXFtXbrHOTCjpsVqNAYiU9LyaKF4ubW5qdOU7GRoW1XJVquHUB1bKIsxg+ev5q2Ou rAik2WQdcYVV6Kn7orlC4J9zlaVvHoe/yBDf2h77+WIpjE8+GKrrJ3lSUrxjLyfkUP oR9HAUL65ah6/LLTloEU+446u5hc3SHAwxiKGX+PTbhmQcijFCizj+gFk7fkFHybB2 W8GYQIhH1p465sJdule/PJpNSBVwTYSE0/NcR1MeeIMBjwIkHkjDr6CNK0SmHnJyPI ZYbOhKWfgUzNJGe205v6vdDZUhIIUrCexIbpPyri+kVBr+vh4VLu3/PBjkMX/Hgm5I +ehBz1L7G5RWQ== Received: by cwcc.thunk.org (Postfix, from userid 15806) id A4F6815C04F1; Thu, 3 Aug 2023 10:19:35 -0400 (EDT) Date: Thu, 3 Aug 2023 10:19:35 -0400 From: "Theodore Ts'o" To: Jeff Layton Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org Subject: Re: [PATCH v6 6/7] ext4: switch to multigrain timestamps Message-ID: <20230803141935.GA1054657@mit.edu> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> <20230725-mgctime-v6-6-a794c2b7abca@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230725-mgctime-v6-6-a794c2b7abca@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Jul 25, 2023 at 10:58:19AM -0400, Jeff Layton wrote: > Enable multigrain timestamps, which should ensure that there is an > apparent change to the timestamp whenever it has been written after > being actively observed via getattr. > > For ext4, we only need to enable the FS_MGTIME flag. > > Signed-off-by: Jeff Layton Acked-by: Theodore Ts'o