From patchwork Mon Jun 17 06:04:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13699988 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4B285C41513 for ; Mon, 17 Jun 2024 06:06:30 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.741612.1148278 (Exim 4.92) (envelope-from ) id 1sJ5VO-0003qn-TB; Mon, 17 Jun 2024 06:06:14 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 741612.1148278; Mon, 17 Jun 2024 06:06:14 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sJ5VO-0003qg-Pr; Mon, 17 Jun 2024 06:06:14 +0000 Received: by outflank-mailman (input) for mailman id 741612; Mon, 17 Jun 2024 06:06:13 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sJ5VM-0001PY-Vv for xen-devel@lists.xenproject.org; Mon, 17 Jun 2024 06:06:12 +0000 Received: from bombadil.infradead.org (bombadil.infradead.org [2607:7c80:54:3::133]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id b152ca2a-2c6f-11ef-b4bb-af5377834399; Mon, 17 Jun 2024 08:06:11 +0200 (CEST) Received: from [91.187.204.140] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sJ5V5-00000009IO0-2EQA; Mon, 17 Jun 2024 06:05:56 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: b152ca2a-2c6f-11ef-b4bb-af5377834399 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=Oo/vqAiMbhGGIUiVbZp/kGzW4LeWY27HMYwjVP6TG+4=; b=n9i+YZUfzxRGa/5geWOPJ7qmNM VGAksmvvlnyjAcGKbffm0w8YFWj/mx8ZeNfKbo6XukT1i4z/7qqCv7AqN6cGKNzTZRqs/Rlz98kse B60tDUVnvOqPTZ+j07UJh958Lv8xgGd4u21/L50kdMEfOjqnyL+uFLGe/y8Jv2z/tzRoXpfQiVdrY jeQ4b6Snlu8NDUy4NjmqAdaKi/3dfCdJChMAKWZrLWqfJnBAbbSVrAz3dOz942P3jNCFUIPZAuF0V lyFA/GeDUiQcFhHunnGHw4c5QrxgmJmSg34SATZmhO2AM5VBka2mQq5u28GalsDqRmL602GT6Qes+ Nt4+DKVg==; From: Christoph Hellwig To: Jens Axboe Cc: Geert Uytterhoeven , Richard Weinberger , Philipp Reisner , Lars Ellenberg , =?utf-8?q?Christoph_B=C3=B6hmwa?= =?utf-8?q?lder?= , Josef Bacik , Ming Lei , "Michael S. Tsirkin" , Jason Wang , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Song Liu , Yu Kuai , Vineeth Vijayan , "Martin K. Petersen" , linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Hannes Reinecke , Bart Van Assche Subject: [PATCH 07/26] loop: also use the default block size from an underlying block device Date: Mon, 17 Jun 2024 08:04:34 +0200 Message-ID: <20240617060532.127975-8-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240617060532.127975-1-hch@lst.de> References: <20240617060532.127975-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Fix the code in loop_reconfigure_limits to pick a default block size for O_DIRECT file descriptors to also work when the loop device sits on top of a block device and not just on a regular file on a block device based file system. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Damien Le Moal --- drivers/block/loop.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index eea3e4919e356e..6a4826708a3acf 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -988,10 +988,16 @@ static int loop_reconfigure_limits(struct loop_device *lo, unsigned short bsize) { struct file *file = lo->lo_backing_file; struct inode *inode = file->f_mapping->host; + struct block_device *backing_bdev = NULL; struct queue_limits lim; + if (S_ISBLK(inode->i_mode)) + backing_bdev = I_BDEV(inode); + else if (inode->i_sb->s_bdev) + backing_bdev = inode->i_sb->s_bdev; + if (!bsize) - bsize = loop_default_blocksize(lo, inode->i_sb->s_bdev); + bsize = loop_default_blocksize(lo, backing_bdev); lim = queue_limits_start_update(lo->lo_queue); lim.logical_block_size = bsize;