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=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 4F2E0C4360C for ; Thu, 10 Oct 2019 06:49:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2617221920 for ; Thu, 10 Oct 2019 06:49:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="JiG/Li5b" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727296AbfJJGtg (ORCPT ); Thu, 10 Oct 2019 02:49:36 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:46234 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727207AbfJJGtg (ORCPT ); Thu, 10 Oct 2019 02:49:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=xKWuIym4JxqmokYQU5+3M41thCo8iJpJuuKy/e5KtI8=; b=JiG/Li5bQE1C7qwZbS2uxb5W4 adT4DJQ4WtEv8nRM/KHCpnDfM1WsA//UoQjxD8w72pwmtFQLqYbULHt4Pqp1T5QI69gqard2EzVHg u8oE+m2iHBtlztMenfF9oqBuVN/ofsNhGZCdGIz3QwSKz75WHYfJbePv5YfvHOm3gCIwqnLdJqgFc tYHQ04P3hiRInMThSoFDyLKVE2lXanloZ0ZKlxH/AWcd8NBIz49E9pBEqCD5w4i9G+VcxOmkcMsyZ 6uQ2GPA0TtubdTro8edr5Xe8Hzf7MX2p5G/xJgTu8LMO3FeZyQ5DL0mnZokr9IfMByRYQkCzXINHy MQtsZosxg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.2 #3 (Red Hat Linux)) id 1iISGV-0007xq-Tt; Thu, 10 Oct 2019 06:49:35 +0000 Date: Wed, 9 Oct 2019 23:49:35 -0700 From: Christoph Hellwig To: "Darrick J. Wong" Cc: Eryu Guan , Christoph Hellwig , fstests Subject: Re: [PATCH] generic: check reflink multiple mmap write Message-ID: <20191010064935.GA28292@infradead.org> References: <20191010041440.GH13097@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191010041440.GH13097@magnolia> User-Agent: Mutt/1.12.1 (2019-06-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: fstests-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org On Wed, Oct 09, 2019 at 09:14:40PM -0700, Darrick J. Wong wrote: > From: Darrick J. Wong > > Add a test to make sure that we can handle multiple memory mappings to a > physical storage extent shared by multiple files, and that we can handle > the copy on write operation without error. > > Signed-off-by: Darrick J. Wong Thanks, this looks good: Reviewed-by: Christoph Hellwig To further try fund DAX corner cases we should also try different offsets for the different files, or different offsets in the same file referring to the same blocks. I can take a stab at that once I find some time.