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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 0C881C433ED for ; Mon, 5 Apr 2021 15:29:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D79FC6127A for ; Mon, 5 Apr 2021 15:29:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238155AbhDEP3U (ORCPT ); Mon, 5 Apr 2021 11:29:20 -0400 Received: from jabberwock.ucw.cz ([46.255.230.98]:43580 "EHLO jabberwock.ucw.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232714AbhDEP3S (ORCPT ); Mon, 5 Apr 2021 11:29:18 -0400 Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id 1F06D1C0B81; Mon, 5 Apr 2021 17:29:09 +0200 (CEST) Date: Mon, 5 Apr 2021 17:29:08 +0200 From: Pavel Machek To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Eric Whitney , Theodore Tso , Sasha Levin Subject: Re: [PATCH 5.10 004/126] ext4: shrink race window in ext4_should_retry_alloc() Message-ID: <20210405152908.GA32232@amd> References: <20210405085031.040238881@linuxfoundation.org> <20210405085031.189492366@linuxfoundation.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="vkogqOf2sHV7VnPd" Content-Disposition: inline In-Reply-To: <20210405085031.189492366@linuxfoundation.org> User-Agent: Mutt/1.5.23 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vkogqOf2sHV7VnPd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > From: Eric Whitney > A per filesystem percpu counter exported via sysfs is added to allow > users or developers to track the number of times the retry limit is > exceeded without resorting to debugging methods. This should provide > some insight into worst case retry behavior. This adds new counter exported via sysfs, but no documentation of that counter... Best regards, Pavel > @@ -257,6 +259,7 @@ static struct attribute *ext4_attrs[] =3D { > ATTR_LIST(session_write_kbytes), > ATTR_LIST(lifetime_write_kbytes), > ATTR_LIST(reserved_clusters), > + ATTR_LIST(sra_exceeded_retry_limit), > ATTR_LIST(inode_readahead_blks), > ATTR_LIST(inode_goal), > ATTR_LIST(mb_stats), --=20 http://www.livejournal.com/~pavelmachek --vkogqOf2sHV7VnPd Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAmBrLMQACgkQMOfwapXb+vKcZQCfeKMu/0dzWL9OYyGgoiXHOWP0 OqsAn271Mi6QBmSukEo/oVgWp8apPipj =a/GM -----END PGP SIGNATURE----- --vkogqOf2sHV7VnPd--