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=-8.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 7D998C433DF for ; Mon, 29 Jun 2020 19:08:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2944C206E2 for ; Mon, 29 Jun 2020 19:08:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ij4PBgcS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2944C206E2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 6B0316B00A3; Mon, 29 Jun 2020 15:08:27 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 661A66B00A4; Mon, 29 Jun 2020 15:08:27 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 529256B00A5; Mon, 29 Jun 2020 15:08:27 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0057.hostedemail.com [216.40.44.57]) by kanga.kvack.org (Postfix) with ESMTP id 395616B00A3 for ; Mon, 29 Jun 2020 15:08:27 -0400 (EDT) Received: from smtpin05.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id D877E181AC9C6 for ; Mon, 29 Jun 2020 19:08:26 +0000 (UTC) X-FDA: 76983185412.05.self05_2b102f626e71 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin05.hostedemail.com (Postfix) with ESMTP id A830518001745 for ; Mon, 29 Jun 2020 19:08:26 +0000 (UTC) X-HE-Tag: self05_2b102f626e71 X-Filterd-Recvd-Size: 3432 Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Mon, 29 Jun 2020 19:08:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593457705; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=n2qVe7QVtMWlsu3tW293XYJBZ3r5SYGfqQyhGd9NB2s=; b=Ij4PBgcSg3Ntims8eYjhczQG0ARN8QglfAWrodFofst2aw7QaYiOcET3Hw72LrnenPGKes 0ZCiaX6ecA50df/o7VpoyZjad6QJlmHXU+17fcI0hsUFPZwB5BlSZ2ZdhtPaMs9X8O2wfb +3QqEPmzBVN82VzSlgZ8g/Pwe4cSavg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-240-L3fpmOSlM7CetVm3iyl5YQ-1; Mon, 29 Jun 2020 15:08:13 -0400 X-MC-Unique: L3fpmOSlM7CetVm3iyl5YQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B3B1210059A3; Mon, 29 Jun 2020 19:08:11 +0000 (UTC) Received: from [IPv6:::1] (ovpn04.gateway.prod.ext.phx2.redhat.com [10.5.9.4]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 074F960BF3; Mon, 29 Jun 2020 19:08:10 +0000 (UTC) From: Eric Sandeen To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jonathan Corbet Cc: cgroups@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs Subject: [PATCH] doc: cgroup: add f2fs and xfs to supported list for writeback Message-ID: Date: Mon, 29 Jun 2020 14:08:09 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Rspamd-Queue-Id: A830518001745 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: f2fs and xfs have both added support for cgroup writeback: 578c647 f2fs: implement cgroup writeback support adfb5fb xfs: implement cgroup aware writeback so add them to the supported list in the docs. Signed-off-by: Eric Sandeen --- TBH I wonder about the wisdom of having this detail in the doc, as it apparently gets missed quite often ... diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index ce3e05e..4f82afa 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -1684,9 +1684,9 @@ per-cgroup dirty memory states are examined and the more restrictive of the two is enforced. cgroup writeback requires explicit support from the underlying -filesystem. Currently, cgroup writeback is implemented on ext2, ext4 -and btrfs. On other filesystems, all writeback IOs are attributed to -the root cgroup. +filesystem. Currently, cgroup writeback is implemented on ext2, ext4, +btrfs, f2fs, and xfs. On other filesystems, all writeback IOs are +attributed to the root cgroup. There are inherent differences in memory and writeback management which affects how cgroup ownership is tracked. Memory is tracked per