From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8CE9B3EF64F; Thu, 18 Jun 2026 10:27:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781778474; cv=none; b=XBrRJtXZMDyD7XOXDIKv/bYucUAAFN8U79pX8jBVj3+Zqfuy7PLXy2Xpq5MtnkJuxhNgWGdRLGT6puWF0chAHVqSgVIGdaiS6aKSxCiQM3xaFbJxcn5Qq7GARc2SSxn3KCmh7bHOa32utyUD1s63rpcK1HbYjhuCO5oc8Z8wvtI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781778474; c=relaxed/simple; bh=opaVuOSnnnT8IZNoJ3aT7c7J4fMuIyEHLrzEEbEMdRE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=EOolTiOGVeR9zMtDI/vuSddQHO5B7QRKi+QKBqKEFeK3XM2yXe7TMufCRZpgGnFI8NBd9IzoKSMzs9CGJd8eEhrkYhOU8KQ3IYQluOwiceeflgoz26Reui0crH9ddSrCVIhS2H3OSMuXpBCbIrnQKCVaDIZj3nT+Jke7e3H3w80= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=bPHXN7C+; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="bPHXN7C+" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=MqBGkk6wcSdrc1kSrODb8jDMwhC8Pa/nfcjc2VhB0y4=; b=bPHXN7C+YXigi+F6P6JvV90i+r XOjKWBv/hissgNpqsqcfL76SFwxKQnft2HYEGoIFWlc0gi6AwEbUV6R61M87exV40xAKJUfOhwFgx yxAy9GsE8NJLaXMK8tbm7zkOC0lnbQQTlAc+w+lphGp9fUCTRlYSHsVLlvc5UoaBs8SwFC42xL8J3 VV+p9ihxB5I9FiZt1W04ZJZgybkwLAncAzprmG9MXP1D2lbntdt4o6TQIK/bWEgsXUJJtUEsgXCfb OR9FmG0HdKH6Pj6oTrGDrQa9I7QNaqmwJq1pv5o1Hpwuyif/zWkzGzuIhV8N7dKUJJpSTGXVmZ+Lr +wNatRuQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.99.1 #2 (Red Hat Linux)) id 1wa9yL-000000016Nj-3qaH; Thu, 18 Jun 2026 10:27:45 +0000 Date: Thu, 18 Jun 2026 03:27:45 -0700 From: Christoph Hellwig To: Gao Xiang Cc: Christoph Hellwig , "zhaoyifan (H)" , linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, yekelu1@huawei.com, jingrui@huawei.com, zhukeqian1@huawei.com, Ritesh Harjani , "Darrick J. Wong" , linux-xfs@vger.kernel.org, Joanne Koong Subject: Re: don't merge bios over iomap boundaries, was: Re: [PATCH] erofs: prevent buffered read bio merges across device chunks Message-ID: References: <20260612033244.993507-1-zhaoyifan28@huawei.com> <58bef9af-0926-4948-b917-e38c3793f596@linux.alibaba.com> <7a38b823-59f3-419e-9070-cbc848f6f1fe@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7a38b823-59f3-419e-9070-cbc848f6f1fe@linux.alibaba.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Thu, Jun 18, 2026 at 06:14:03PM +0800, Gao Xiang wrote: > I think this patch can go alone seperately because the > correctness is okay and cross-subsystem git merge is > a bit of churn. > > I've pushed an chunk merging patch individually to -next > for this cycle too, and it should fix too many bios issue, > but even without that patch it won't impact the correctness > (just less performant.) I assume both patches will upstream > in the near future. Thanks. I'll get this patch dusted up for a formal submission in a bit and will send it out.