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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F500C433F5 for ; Tue, 16 Nov 2021 03:29:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5FDCB61B66 for ; Tue, 16 Nov 2021 03:29:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5FDCB61B66 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id B781D6B00A1; Mon, 15 Nov 2021 22:29:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B27B46B00A6; Mon, 15 Nov 2021 22:29:51 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A15F26B00A7; Mon, 15 Nov 2021 22:29:51 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0098.hostedemail.com [216.40.44.98]) by kanga.kvack.org (Postfix) with ESMTP id 92FA16B00A1 for ; Mon, 15 Nov 2021 22:29:51 -0500 (EST) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 4FD4C82FE8 for ; Tue, 16 Nov 2021 03:29:51 +0000 (UTC) X-FDA: 78813364182.15.13D3D0C Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf23.hostedemail.com (Postfix) with ESMTP id 00D8C90000B6 for ; Tue, 16 Nov 2021 03:29:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=c8TaYYX1zKy7i28b/mSLAzG8phHLkyan0csYuEpNJ5I=; b=LskO0SarMS4mrwrBP1UbwKNj3m JljHVvow4H2WyVhlEBH+Gbgu/pcis3a78BgOUygrhGyZI0khPAMW55pPVRvFmQh1Ksgnl6SZtDy0L +O16MvL70j6spBSqLn2Sfx79pJXxlPei9W618gtw/deWxHtGqzZJAABXXZeBdkvcA2AUQyN1ruQio 95INbyhDl4R4sivN+sLfiFDizLIWhZLZ2/vayt45mZVavtk7Kj9o6MGNjMUOIVIoosaVJQaSP6ZHM zuG8xJ2ssl+k8fkSJGvagwPwIsz1xaPoaBeoYd9qfJwIwcFlVCte++qLPdZro39hsiEiNsHkHELNu 0eeoYo4g==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mmp9v-006RCM-DE; Tue, 16 Nov 2021 03:29:23 +0000 Date: Tue, 16 Nov 2021 03:29:23 +0000 From: Matthew Wilcox To: NeilBrown Cc: Trond Myklebust , Anna Schumaker , Chuck Lever , Andrew Morton , Mel Gorman , linux-nfs@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 00/13] Repair SWAP-over-NFS Message-ID: References: <163702956672.25805.16457749992977493579.stgit@noble.brown> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <163702956672.25805.16457749992977493579.stgit@noble.brown> X-Stat-Signature: sby7gfgpcbqth9rc5ktum9t6kcqc5c8r Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=LskO0Sar; spf=none (imf23.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 00D8C90000B6 X-HE-Tag: 1637033357-389638 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: On Tue, Nov 16, 2021 at 01:44:04PM +1100, NeilBrown wrote: > swap-over-NFS currently has a variety of problems. > > Due to a newish test in generic_write_checks(), all writes to swap > currently fail. And by "currently", you mean "for over two years" (August 2019). Does swap-over-NFS (or any other network filesystem) actually have any users, and should we fix it or rip it out?