From patchwork Tue Jun 11 05:19:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13692973 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 27455C27C7B for ; Tue, 11 Jun 2024 05:20:21 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.737603.1144028 (Exim 4.92) (envelope-from ) id 1sGtvV-0000PX-AK; Tue, 11 Jun 2024 05:20:09 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 737603.1144028; Tue, 11 Jun 2024 05:20:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sGtvV-0000PM-6d; Tue, 11 Jun 2024 05:20:09 +0000 Received: by outflank-mailman (input) for mailman id 737603; Tue, 11 Jun 2024 05:20:08 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sGtvU-0006Mb-6r for xen-devel@lists.xenproject.org; Tue, 11 Jun 2024 05:20:08 +0000 Received: from bombadil.infradead.org (bombadil.infradead.org [2607:7c80:54:3::133]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 437cbbf5-27b2-11ef-90a3-e314d9c70b13; Tue, 11 Jun 2024 07:20:07 +0200 (CEST) Received: from 2a02-8389-2341-5b80-cdb4-8e7d-405d-6b77.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:cdb4:8e7d:405d:6b77] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sGtvC-00000007QuL-20ql; Tue, 11 Jun 2024 05:19:51 +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: 437cbbf5-27b2-11ef-90a3-e314d9c70b13 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=ssio61bxvyjbVvX4GR2JkhWcuVQT+rCdDVvaw5rJLVc=; b=EJfeUdDKwEweKUiqH+eMopsdVZ x0gPUHB6qGWFYwZZXoBfv6LI+X2dpdCL1TKhBlBBGZmhekTG11CsY1Tp8gFm1z77BgnAggRFyPHtv /dS9x1QJgeNzRrx5rQgmApC3kW21NnhiRIEaqoJzqGn3bNpz/08IyT53p4q+cqbxaW2iE/+UsRzno ybACNAR9eGBjFjHk1OhTQhWhdG1r7xhSZGewPFQ+tjMcJUiDtfg4DFIXSmxBMyXPF8Somg+Z608jF modWNKz1rFqGQflCfEdrX2jtnU5vYnXih6AoW/RLdg3bhHrcGssn0BCXi6xxJfpGEC4cpZmmzl8lq /NJxmiHw==; 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 Subject: [PATCH 06/26] loop: also use the default block size from an underlying block device Date: Tue, 11 Jun 2024 07:19:06 +0200 Message-ID: <20240611051929.513387-7-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240611051929.513387-1-hch@lst.de> References: <20240611051929.513387-1-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 --- 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 4f6d8514d19bd6..d7cf6bbbfb1b86 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;