From patchwork Wed Aug 23 10:48:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 13362089 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2317EC3DA6F for ; Wed, 23 Aug 2023 10:50:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234231AbjHWKu0 (ORCPT ); Wed, 23 Aug 2023 06:50:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234174AbjHWKtg (ORCPT ); Wed, 23 Aug 2023 06:49:36 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72C95E51; Wed, 23 Aug 2023 03:49:25 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 5EFF421EFE; Wed, 23 Aug 2023 10:48:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1692787738; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ta1LCjic01AbdL80q5ntMXxRBs4CGtenSiuCJ0/ca5s=; b=3AG6qpqRXE8rAmd/ZGJEULjavvIbhhEB5R5NwFX6v3CgCvTESUeUqZVdyOCDfv2lbXitw3 5tmBzUFlMgq+JV01OhXpJXsLupb6Zp4qI75ib2OydERvHvvpRoee2VtTdXO5OylCwZZszd vGn8CdTb2VzYbNxmd7O8eP+JwRabDF0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1692787738; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ta1LCjic01AbdL80q5ntMXxRBs4CGtenSiuCJ0/ca5s=; b=Wm+AD4Wu6zrAIfMuK17QfMJiDODz7SqQY+OZMzpXKCUrU3q5YGMgLf7nh4R8SGHiYGIkHZ 7/qi5wrHGmRyeWDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 50AF113A1B; Wed, 23 Aug 2023 10:48:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id zKexExrk5WQ8IAAAMHmgww (envelope-from ); Wed, 23 Aug 2023 10:48:58 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 33AA6A0780; Wed, 23 Aug 2023 12:48:57 +0200 (CEST) From: Jan Kara To: Christian Brauner Cc: Jens Axboe , , , Christoph Hellwig , Jan Kara , xen-devel@lists.xenproject.org, Christoph Hellwig Subject: [PATCH 07/29] xen/blkback: Convert to bdev_open_by_dev() Date: Wed, 23 Aug 2023 12:48:18 +0200 Message-Id: <20230823104857.11437-7-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230818123232.2269-1-jack@suse.cz> References: <20230818123232.2269-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6194; i=jack@suse.cz; h=from:subject; bh=PSJt+0LeX7itk49X6SZenWswOkp8VIMO9RZLQ+K7HEM=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBk5eP0iJi8sPdnhhBzwfHC0vgE18xL/D7JO93InPBQ u9DQxzKJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZOXj9AAKCRCcnaoHP2RA2cdKB/ 97UaRgj6kXgB06Gm1GJpwV/iVNnpoDEAwXR7shYLyepmiR4g4eU2ihiWc1MoHBxDD4+xutoHdV9OOs bW7Z0PVDaJtC+1WRzSZ5/5SdwbsjzyBq4I7rcFDwb95WmYEqlmiTPgrZwUNS7pZICYAfm5ENCb4zkO MlIGjchM3rVyUgHB+czcMJBPulqZmgj1ZFCI7wcWOM4hAB758W5EMrFid3n4XEWKPvJts1BSOo7pXZ ucWt3M713mxKHpo4ge48OmchJPkKBkY7plrGWXVKp+RtzGsuHeQvXOAAQTyntF61M2RjP/YLdtMSIY upkYkK9jUWUBPRW+ySdYSf3fLU6KO/ X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert xen/blkback to use bdev_open_by_dev() and pass the handle around. CC: xen-devel@lists.xenproject.org Acked-by: Christoph Hellwig Signed-off-by: Jan Kara Acked-by: Christian Brauner --- drivers/block/xen-blkback/blkback.c | 4 +-- drivers/block/xen-blkback/common.h | 4 +-- drivers/block/xen-blkback/xenbus.c | 40 +++++++++++++++-------------- 3 files changed, 25 insertions(+), 23 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index c362f4ad80ab..4defd7f387c7 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -465,7 +465,7 @@ static int xen_vbd_translate(struct phys_req *req, struct xen_blkif *blkif, } req->dev = vbd->pdevice; - req->bdev = vbd->bdev; + req->bdev = vbd->bdev_handle->bdev; rc = 0; out: @@ -969,7 +969,7 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring, int err = 0; int status = BLKIF_RSP_OKAY; struct xen_blkif *blkif = ring->blkif; - struct block_device *bdev = blkif->vbd.bdev; + struct block_device *bdev = blkif->vbd.bdev_handle->bdev; struct phys_req preq; xen_blkif_get(blkif); diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index 40f67bfc052d..5ff50e76cee5 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -221,7 +221,7 @@ struct xen_vbd { unsigned char type; /* phys device that this vbd maps to. */ u32 pdevice; - struct block_device *bdev; + struct bdev_handle *bdev_handle; /* Cached size parameter. */ sector_t size; unsigned int flush_support:1; @@ -360,7 +360,7 @@ struct pending_req { }; -#define vbd_sz(_v) bdev_nr_sectors((_v)->bdev) +#define vbd_sz(_v) bdev_nr_sectors((_v)->bdev_handle->bdev) #define xen_blkif_get(_b) (atomic_inc(&(_b)->refcnt)) #define xen_blkif_put(_b) \ diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index bb66178c432b..e34219ea2b05 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -81,7 +81,7 @@ static void xen_update_blkif_status(struct xen_blkif *blkif) int i; /* Not ready to connect? */ - if (!blkif->rings || !blkif->rings[0].irq || !blkif->vbd.bdev) + if (!blkif->rings || !blkif->rings[0].irq || !blkif->vbd.bdev_handle) return; /* Already connected? */ @@ -99,12 +99,13 @@ static void xen_update_blkif_status(struct xen_blkif *blkif) return; } - err = sync_blockdev(blkif->vbd.bdev); + err = sync_blockdev(blkif->vbd.bdev_handle->bdev); if (err) { xenbus_dev_error(blkif->be->dev, err, "block flush"); return; } - invalidate_inode_pages2(blkif->vbd.bdev->bd_inode->i_mapping); + invalidate_inode_pages2( + blkif->vbd.bdev_handle->bdev->bd_inode->i_mapping); for (i = 0; i < blkif->nr_rings; i++) { ring = &blkif->rings[i]; @@ -472,9 +473,9 @@ static void xenvbd_sysfs_delif(struct xenbus_device *dev) static void xen_vbd_free(struct xen_vbd *vbd) { - if (vbd->bdev) - blkdev_put(vbd->bdev, NULL); - vbd->bdev = NULL; + if (vbd->bdev_handle) + bdev_release(vbd->bdev_handle); + vbd->bdev_handle = NULL; } static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, @@ -482,7 +483,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, int cdrom) { struct xen_vbd *vbd; - struct block_device *bdev; + struct bdev_handle *bdev_handle; vbd = &blkif->vbd; vbd->handle = handle; @@ -491,17 +492,17 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, vbd->pdevice = MKDEV(major, minor); - bdev = blkdev_get_by_dev(vbd->pdevice, vbd->readonly ? + bdev_handle = bdev_open_by_dev(vbd->pdevice, vbd->readonly ? BLK_OPEN_READ : BLK_OPEN_WRITE, NULL, NULL); - if (IS_ERR(bdev)) { + if (IS_ERR(bdev_handle)) { pr_warn("xen_vbd_create: device %08x could not be opened\n", vbd->pdevice); return -ENOENT; } - vbd->bdev = bdev; - if (vbd->bdev->bd_disk == NULL) { + vbd->bdev_handle = bdev_handle; + if (vbd->bdev_handle->bdev->bd_disk == NULL) { pr_warn("xen_vbd_create: device %08x doesn't exist\n", vbd->pdevice); xen_vbd_free(vbd); @@ -509,14 +510,14 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, } vbd->size = vbd_sz(vbd); - if (cdrom || disk_to_cdi(vbd->bdev->bd_disk)) + if (cdrom || disk_to_cdi(vbd->bdev_handle->bdev->bd_disk)) vbd->type |= VDISK_CDROM; - if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE) + if (vbd->bdev_handle->bdev->bd_disk->flags & GENHD_FL_REMOVABLE) vbd->type |= VDISK_REMOVABLE; - if (bdev_write_cache(bdev)) + if (bdev_write_cache(bdev_handle->bdev)) vbd->flush_support = true; - if (bdev_max_secure_erase_sectors(bdev)) + if (bdev_max_secure_erase_sectors(bdev_handle->bdev)) vbd->discard_secure = true; pr_debug("Successful creation of handle=%04x (dom=%u)\n", @@ -569,7 +570,7 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info struct xen_blkif *blkif = be->blkif; int err; int state = 0; - struct block_device *bdev = be->blkif->vbd.bdev; + struct block_device *bdev = be->blkif->vbd.bdev_handle->bdev; if (!xenbus_read_unsigned(dev->nodename, "discard-enable", 1)) return; @@ -930,15 +931,16 @@ static void connect(struct backend_info *be) goto abort; } err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu", - (unsigned long) - bdev_logical_block_size(be->blkif->vbd.bdev)); + (unsigned long)bdev_logical_block_size( + be->blkif->vbd.bdev_handle->bdev)); if (err) { xenbus_dev_fatal(dev, err, "writing %s/sector-size", dev->nodename); goto abort; } err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u", - bdev_physical_block_size(be->blkif->vbd.bdev)); + bdev_physical_block_size( + be->blkif->vbd.bdev_handle->bdev)); if (err) xenbus_dev_error(dev, err, "writing %s/physical-sector-size", dev->nodename);