From patchwork Tue Sep 1 15:57:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748911 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D76AC618 for ; Tue, 1 Sep 2020 15:58:11 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B5480206FA for ; Tue, 1 Sep 2020 15:58:11 +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="BHj68uZe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5480206FA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 7AC0D1396FBF9; Tue, 1 Sep 2020 08:58:11 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 59E2B125E5506 for ; Tue, 1 Sep 2020 08:58:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=K5eIje+dXHxfLWtnzeoqBqIaTntBT6FnczHUHcmj9NM=; b=BHj68uZerC2AED+VGnjrkLa0Jh nsJRW5vm091mrlQN4jasrWRgCM1ySYUPiKOPMQFvHehK/MlKtnHTq4wA553107TmfoWBqjYusFfYX hdHxpzv+daxEQOnuXf6LklRx/LX2GKJBoWUUuYJ/y29nMBNvIIiiJqjuYtLUkOMxx5BP8xZfY/Z4A CFzRy/RgRKCcS7Au+4o2s+j98ZQ2HjaNhxqv/ZtdIfcmckO7GlAMLvRgJLn00q/4ttYSbN93Dmike 0zdupPRWnfslW66yg0S9XJuGo14FgsCVoZ5MV+EfsKdkYr2KNA9ctgbrNlF6+GHh2s9ZqbM0SlrKW GAfzhSYQ==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fP-0004OY-KR; Tue, 01 Sep 2020 15:57:51 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 1/9] Documentation/filesystems/locking.rst: remove an incorrect sentence Date: Tue, 1 Sep 2020 17:57:40 +0200 Message-Id: <20200901155748.2884-2-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: PV6KUPN4GTRECMVGCI5DUIQ47ZI62K57 X-Message-ID-Hash: PV6KUPN4GTRECMVGCI5DUIQ47ZI62K57 X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: unlock_native_capacity is never called from check_disk_change(), and while revalidate_disk can be called from it, it can also be called from two other places at the moment. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- Documentation/filesystems/locking.rst | 3 --- 1 file changed, 3 deletions(-) diff --git a/Documentation/filesystems/locking.rst b/Documentation/filesystems/locking.rst index 64f94a18d97e75..c0f2c7586531b0 100644 --- a/Documentation/filesystems/locking.rst +++ b/Documentation/filesystems/locking.rst @@ -488,9 +488,6 @@ getgeo: no swap_slot_free_notify: no (see below) ======================= =================== -unlock_native_capacity and revalidate_disk are called only from -check_disk_change(). - swap_slot_free_notify is called with swap_lock and sometimes the page lock held. From patchwork Tue Sep 1 15:57:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748917 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D0490618 for ; Tue, 1 Sep 2020 15:58:16 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AB74020767 for ; Tue, 1 Sep 2020 15:58:16 +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="TsLN4Ki5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB74020767 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id E1BC91396FC04; Tue, 1 Sep 2020 08:58:12 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id A53241396FBF3 for ; Tue, 1 Sep 2020 08:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=JssZ/9cfFlKY9nXiXN1eWHNYfq2IqPkVO48PJ0G1HVM=; b=TsLN4Ki5H6wDqMT7EkDDmICR5s 2ikY9tR6e67GKJEqjuS9L66bSUIo+pu5PYEAc9ljO3uyf6oMcNiepE5rzwUxhjE+/vnTmCPgENmda C0OeAfERJgyA7K8KeFysVlBHyF0BPeIG7el80V9O61CNCYuSKhfujxSQgjXJOjMOSEy03HwmPQuPh RJCdiSoEUrRAJIJ7z0BaLS8JSw/BmFlWFm/qiMtciExAsNyJHCr7Vvb8RIEQV1UW0Wnk6ZMFBndz3 +EuD/g9pjFt/AGKn2OUIwLAq2rE5vGf6lWordEqx3jg+9VI6y7EPXjBeepMY6Nus8DQ6cZOSE4OGn R3KU2Xqg==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fR-0004Op-3n; Tue, 01 Sep 2020 15:57:53 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 2/9] block: don't clear bd_invalidated in check_disk_size_change Date: Tue, 1 Sep 2020 17:57:41 +0200 Message-Id: <20200901155748.2884-3-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: T27CCGVHEHT5NG4TZINFCYORN4J5KAOL X-Message-ID-Hash: T27CCGVHEHT5NG4TZINFCYORN4J5KAOL X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: bd_invalidated is set by check_disk_change or in add_disk to initiate a partition scan. Move it from check_disk_size_change which is called from both revalidate_disk() and bdev_disk_changed() to only the latter, as that is what is called from the block device open code (and nbd) to deal with the bd_invalidated event. revalidate_disk() on the other hand is mostly used to propagate a size update from the gendisk to the block device, which is entirely unrelated. Signed-off-by: Christoph Hellwig --- fs/block_dev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/block_dev.c b/fs/block_dev.c index 08158bb2e76c85..2760292045c082 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1302,7 +1302,6 @@ static void check_disk_size_change(struct gendisk *disk, } i_size_write(bdev->bd_inode, disk_size); } - bdev->bd_invalidated = 0; spin_unlock(&bdev->bd_size_lock); if (bdev_size > disk_size) { @@ -1391,6 +1390,8 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate) lockdep_assert_held(&bdev->bd_mutex); + bdev->bd_invalidated = 0; + rescan: ret = blk_drop_partitions(bdev); if (ret) From patchwork Tue Sep 1 15:57:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748913 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B0F5214E5 for ; Tue, 1 Sep 2020 15:58:13 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8FA4D206EF for ; Tue, 1 Sep 2020 15:58:13 +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="LG/NOf2v" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8FA4D206EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 9594A1396FBFF; Tue, 1 Sep 2020 08:58:12 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 49A80125E5506 for ; Tue, 1 Sep 2020 08:58:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=LCcuCSBOWzTZR3L36Z4teH3hguC0YRk5e9B06CtwpM4=; b=LG/NOf2vrc6lYei/L+Z1eIthrC Za7US4iSKJ/WbIV7qWmAJ4Zu1f8kKzD4dm8IzfowUCXLWl2I6CnTcjAYKNXubYJJWog9OQzVKNgQU JKQDJU8aOtSTbsbcLVBwrAsrpV6hzAKa7q6dA/KOwR9PS0JPpwrDP1f7JfI4olB8rlAhi95L7rcKs 8CZnpd3idN3ZzmwJXd2ljKFmNBf+bkl4mvPHkeXR9GUdRubRYSpy4bItm3vyPzEv5RUdxXiTabkno fQzNt+/AYYrnyHlQd3b9AyQHRPscfouXB92OUylsk0dDYPodZbsybBY2fYyHseMPXSzaZnVYZu8k2 Ht1LyIFQ==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fS-0004Ov-PT; Tue, 01 Sep 2020 15:57:55 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 3/9] block: rename bd_invalidated Date: Tue, 1 Sep 2020 17:57:42 +0200 Message-Id: <20200901155748.2884-4-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: LM5AKLGPTY6GJZFGXOA5ET233POXW2ZV X-Message-ID-Hash: LM5AKLGPTY6GJZFGXOA5ET233POXW2ZV X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Replace bd_invalidate with a new BDEV_NEED_PART_SCAN flag in a bd_flags variable to better describe the condition. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/genhd.c | 2 +- drivers/block/nbd.c | 8 ++++---- fs/block_dev.c | 10 +++++----- include/linux/blk_types.h | 4 +++- 4 files changed, 13 insertions(+), 11 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 99c64641c3148c..a2c0ec694918e5 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -734,7 +734,7 @@ static void register_disk(struct device *parent, struct gendisk *disk, if (!bdev) goto exit; - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); err = blkdev_get(bdev, FMODE_READ, NULL); if (err < 0) goto exit; diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index a54f2d155a31a5..15eed210feeff4 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -315,7 +315,7 @@ static void nbd_size_update(struct nbd_device *nbd) bd_set_nr_sectors(bdev, nr_sectors); set_blocksize(bdev, config->blksize); } else - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); bdput(bdev); } kobject_uevent(&nbd_to_dev(nbd)->kobj, KOBJ_CHANGE); @@ -1322,7 +1322,7 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b return ret; if (max_part) - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); mutex_unlock(&nbd->config_lock); ret = wait_event_interruptible(config->recv_wq, atomic_read(&config->recv_threads) == 0); @@ -1500,9 +1500,9 @@ static int nbd_open(struct block_device *bdev, fmode_t mode) refcount_set(&nbd->config_refs, 1); refcount_inc(&nbd->refs); mutex_unlock(&nbd->config_lock); - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); } else if (nbd_disconnected(nbd->config)) { - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); } out: mutex_unlock(&nbd_index_mutex); diff --git a/fs/block_dev.c b/fs/block_dev.c index 2760292045c082..0207623769715d 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -881,7 +881,7 @@ struct block_device *bdget(dev_t dev) bdev->bd_super = NULL; bdev->bd_inode = inode; bdev->bd_part_count = 0; - bdev->bd_invalidated = 0; + bdev->bd_flags = 0; inode->i_mode = S_IFBLK; inode->i_rdev = dev; inode->i_bdev = bdev; @@ -1365,7 +1365,7 @@ int check_disk_change(struct block_device *bdev) if (__invalidate_device(bdev, true)) pr_warn("VFS: busy inodes on changed media %s\n", disk->disk_name); - bdev->bd_invalidated = 1; + set_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); if (bdops->revalidate_disk) bdops->revalidate_disk(bdev->bd_disk); return 1; @@ -1390,7 +1390,7 @@ int bdev_disk_changed(struct block_device *bdev, bool invalidate) lockdep_assert_held(&bdev->bd_mutex); - bdev->bd_invalidated = 0; + clear_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags); rescan: ret = blk_drop_partitions(bdev); @@ -1528,7 +1528,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, * The latter is necessary to prevent ghost * partitions on a removed medium. */ - if (bdev->bd_invalidated && + if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) && (!ret || ret == -ENOMEDIUM)) bdev_disk_changed(bdev, ret == -ENOMEDIUM); @@ -1558,7 +1558,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, if (bdev->bd_disk->fops->open) ret = bdev->bd_disk->fops->open(bdev, mode); /* the same as first opener case, read comment there */ - if (bdev->bd_invalidated && + if (test_bit(BDEV_NEED_PART_SCAN, &bdev->bd_flags) && (!ret || ret == -ENOMEDIUM)) bdev_disk_changed(bdev, ret == -ENOMEDIUM); if (ret) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 63a39e47fc6047..c21eff7efda237 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -19,6 +19,8 @@ struct cgroup_subsys_state; typedef void (bio_end_io_t) (struct bio *); struct bio_crypt_ctx; +#define BDEV_NEED_PART_SCAN 0 + struct block_device { dev_t bd_dev; /* not a kdev_t - it's a search key */ int bd_openers; @@ -37,7 +39,7 @@ struct block_device { struct hd_struct * bd_part; /* number of times partitions within this device have been opened. */ unsigned bd_part_count; - int bd_invalidated; + unsigned long bd_flags; spinlock_t bd_size_lock; /* for bd_inode->i_size updates */ struct gendisk * bd_disk; struct backing_dev_info *bd_bdi; From patchwork Tue Sep 1 15:57:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748915 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1ECCB14E5 for ; Tue, 1 Sep 2020 15:58:15 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F1E1C206FA for ; Tue, 1 Sep 2020 15:58:14 +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="b9sm9foZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F1E1C206FA Authentication-Results: mail.kernel.org; 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See http://www.infradead.org/rpr.html Message-ID-Hash: AI22XV37Y4MPTD66XQYQYVPQK2BM5ZIA X-Message-ID-Hash: AI22XV37Y4MPTD66XQYQYVPQK2BM5ZIA X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: revalidate_disk is a relative awkward helper for driver use, as it first calls an optional driver method and then updates the block device size, while most callers either don't need the method call at all, or want to keep state between the caller and the called method. Add a revalidate_disk_size helper that just performs the update of the block device size from the gendisk one, and switch all drivers that do not implement ->revalidate_disk to use the new helper instead of revalidate_disk() Signed-off-by: Christoph Hellwig Acked-by: Song Liu Reviewed-by: Johannes Thumshirn --- drivers/block/rbd.c | 2 +- drivers/block/rnbd/rnbd-clt.c | 10 ++------- drivers/block/virtio_blk.c | 2 +- drivers/block/zram/zram_drv.c | 4 ++-- drivers/md/dm-raid.c | 2 +- drivers/md/md-cluster.c | 6 ++--- drivers/md/md-linear.c | 2 +- drivers/md/md.c | 10 ++++----- fs/block_dev.c | 42 ++++++++++++++++++++++++----------- include/linux/genhd.h | 1 + 10 files changed, 46 insertions(+), 35 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 01153903969321..5d3923c0997ce0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4921,7 +4921,7 @@ static void rbd_dev_update_size(struct rbd_device *rbd_dev) size = (sector_t)rbd_dev->mapping.size / SECTOR_SIZE; dout("setting size to %llu sectors", (unsigned long long)size); set_capacity(rbd_dev->disk, size); - revalidate_disk(rbd_dev->disk); + revalidate_disk_size(rbd_dev->disk, true); } } diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index cc6a4e2587aec2..157538fc8be515 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -102,18 +102,12 @@ static int rnbd_clt_set_dev_attr(struct rnbd_clt_dev *dev, static int rnbd_clt_change_capacity(struct rnbd_clt_dev *dev, size_t new_nsectors) { - int err = 0; - rnbd_clt_info(dev, "Device size changed from %zu to %zu sectors\n", dev->nsectors, new_nsectors); dev->nsectors = new_nsectors; set_capacity(dev->gd, dev->nsectors); - err = revalidate_disk(dev->gd); - if (err) - rnbd_clt_err(dev, - "Failed to change device size from %zu to %zu, err: %d\n", - dev->nsectors, new_nsectors, err); - return err; + revalidate_disk_size(dev->gd, true); + return 0; } static int process_msg_open_rsp(struct rnbd_clt_dev *dev, diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index ca63a41059d68e..a314b9382442b6 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -598,7 +598,7 @@ static void virtblk_update_cache_mode(struct virtio_device *vdev) struct virtio_blk *vblk = vdev->priv; blk_queue_write_cache(vblk->disk->queue, writeback, false); - revalidate_disk(vblk->disk); + revalidate_disk_size(vblk->disk, true); } static const char *const virtblk_cache_types[] = { diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 9100ac36670afc..a356275605b104 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1739,7 +1739,7 @@ static ssize_t disksize_store(struct device *dev, zram->disksize = disksize; set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT); - revalidate_disk(zram->disk); + revalidate_disk_size(zram->disk, true); up_write(&zram->init_lock); return len; @@ -1786,7 +1786,7 @@ static ssize_t reset_store(struct device *dev, /* Make sure all the pending I/O are finished */ fsync_bdev(bdev); zram_reset_device(zram); - revalidate_disk(zram->disk); + revalidate_disk_size(zram->disk, true); bdput(bdev); mutex_lock(&bdev->bd_mutex); diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 8d2b835d7a108c..56b723d012ac15 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -701,7 +701,7 @@ static void rs_set_capacity(struct raid_set *rs) struct gendisk *gendisk = dm_disk(dm_table_get_md(rs->ti->table)); set_capacity(gendisk, rs->md.array_sectors); - revalidate_disk(gendisk); + revalidate_disk_size(gendisk, true); } /* diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index d50737ec403946..0580b51a156a1c 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -582,7 +582,7 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg) break; case CHANGE_CAPACITY: set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); break; case RESYNCING: set_bit(MD_RESYNCING_REMOTE, &mddev->recovery); @@ -1296,12 +1296,12 @@ static void update_size(struct mddev *mddev, sector_t old_dev_sectors) pr_err("%s:%d: failed to send CHANGE_CAPACITY msg\n", __func__, __LINE__); set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); } else { /* revert to previous sectors */ ret = mddev->pers->resize(mddev, old_dev_sectors); if (!ret) - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); ret = __sendmsg(cinfo, &cmsg); if (ret) pr_err("%s:%d: failed to send METADATA_UPDATED msg\n", diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c index c2ae9125c4c381..5ab22069b5be9c 100644 --- a/drivers/md/md-linear.c +++ b/drivers/md/md-linear.c @@ -202,7 +202,7 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev) md_set_array_sectors(mddev, linear_size(mddev, 0, 0)); set_capacity(mddev->gendisk, mddev->array_sectors); mddev_resume(mddev); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); kfree_rcu(oldconf, rcu); return 0; } diff --git a/drivers/md/md.c b/drivers/md/md.c index 60727820702300..9562ef598ae1f4 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5358,7 +5358,7 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len) mddev->array_sectors = sectors; if (mddev->pers) { set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); } } mddev_unlock(mddev); @@ -6109,7 +6109,7 @@ int do_md_run(struct mddev *mddev) md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */ set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); clear_bit(MD_NOT_READY, &mddev->flags); mddev->changed = 1; kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE); @@ -6427,7 +6427,7 @@ static int do_md_stop(struct mddev *mddev, int mode, set_capacity(disk, 0); mutex_unlock(&mddev->open_mutex); mddev->changed = 1; - revalidate_disk(disk); + revalidate_disk_size(disk, true); if (mddev->ro) mddev->ro = 0; @@ -7259,7 +7259,7 @@ static int update_size(struct mddev *mddev, sector_t num_sectors) md_cluster_ops->update_size(mddev, old_dev_sectors); else if (mddev->queue) { set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); } } return rv; @@ -9018,7 +9018,7 @@ void md_do_sync(struct md_thread *thread) mddev_unlock(mddev); if (!mddev_is_clustered(mddev)) { set_capacity(mddev->gendisk, mddev->array_sectors); - revalidate_disk(mddev->gendisk); + revalidate_disk_size(mddev->gendisk, true); } } diff --git a/fs/block_dev.c b/fs/block_dev.c index 0207623769715d..85f013315d48b3 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1311,6 +1311,34 @@ static void check_disk_size_change(struct gendisk *disk, } } +/** + * revalidate_disk_size - checks for disk size change and adjusts bdev size. + * @disk: struct gendisk to check + * @verbose: if %true log a message about a size change if there is any + * + * This routine checks to see if the bdev size does not match the disk size + * and adjusts it if it differs. When shrinking the bdev size, its all caches + * are freed. + */ +void revalidate_disk_size(struct gendisk *disk, bool verbose) +{ + struct block_device *bdev; + + /* + * Hidden disks don't have associated bdev so there's no point in + * revalidating them. + */ + if (disk->flags & GENHD_FL_HIDDEN) + return; + + bdev = bdget_disk(disk, 0); + if (bdev) { + check_disk_size_change(disk, bdev, verbose); + bdput(bdev); + } +} +EXPORT_SYMBOL(revalidate_disk_size); + /** * revalidate_disk - wrapper for lower-level driver's revalidate_disk call-back * @disk: struct gendisk to be revalidated @@ -1325,19 +1353,7 @@ int revalidate_disk(struct gendisk *disk) if (disk->fops->revalidate_disk) ret = disk->fops->revalidate_disk(disk); - - /* - * Hidden disks don't have associated bdev so there's no point in - * revalidating it. - */ - if (!(disk->flags & GENHD_FL_HIDDEN)) { - struct block_device *bdev = bdget_disk(disk, 0); - - if (bdev) { - check_disk_size_change(disk, bdev, ret == 0); - bdput(bdev); - } - } + revalidate_disk_size(disk, ret == 0); return ret; } EXPORT_SYMBOL(revalidate_disk); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 39025dc0397c04..8e9c9d3a493fae 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -373,6 +373,7 @@ int register_blkdev(unsigned int major, const char *name); void unregister_blkdev(unsigned int major, const char *name); int revalidate_disk(struct gendisk *disk); +void revalidate_disk_size(struct gendisk *disk, bool verbose); int check_disk_change(struct block_device *bdev); int __invalidate_device(struct block_device *bdev, bool kill_dirty); void bd_set_nr_sectors(struct block_device *bdev, sector_t sectors); From patchwork Tue Sep 1 15:57:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748923 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7629E618 for ; Tue, 1 Sep 2020 15:58:20 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5526820767 for ; Tue, 1 Sep 2020 15:58:20 +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="a3R6hLNA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5526820767 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 3344D1396FC08; Tue, 1 Sep 2020 08:58:17 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id B79CB1396FBF8 for ; Tue, 1 Sep 2020 08:58:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=X/wfONNMX9AkocUJrvkgvfoHlYcJ3otMPBdPBvDFSjg=; b=a3R6hLNAfPXw6R8QRXbGznXJl/ XYw3Qcp5GUZVdLvYz3g7yZTdhLBPVHDMlSfggoOPLUZWWTlpi4VSyTLAeSxeaGxz4415i0HuxYlHn Rrzp4jXd9c1wB6Wl3fp75EZkwMR2pMOu0V4GqphS42Sy5cwGMmFOYSTu0f0WbNwh1AsqMoTho9gFC RdhXzlE/7Zkah6VP7mUGqtnJKwpPFotBogYpnKN+bSpdkd42Pcgek9fWuBUDFm0apHm4YOMPi1N2y tFJ5Kmb07jMbKgTkS/gXIrjXeu0LFRibRlegC43oSpS4bZjr/7ucSGkobwgV+XWFLT35JhGnmQ+r9 HsMdIZtA==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fX-0004QE-CS; Tue, 01 Sep 2020 15:57:59 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 5/9] block: use revalidate_disk_size in set_capacity_revalidate_and_notify Date: Tue, 1 Sep 2020 17:57:44 +0200 Message-Id: <20200901155748.2884-6-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: GCD2ESIXUSI5U52LVMYNW5HPZVFVPMRQ X-Message-ID-Hash: GCD2ESIXUSI5U52LVMYNW5HPZVFVPMRQ X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Only virtio_blk and xen-blkfront set the revalidate argument to true, and both do not implement the ->revalidate_disk method. So switch to the helper that just updates the size instead. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/genhd.c | 7 +++---- include/linux/genhd.h | 4 ++-- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index a2c0ec694918e5..431d4081b50ec7 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -50,14 +50,13 @@ static void disk_release_events(struct gendisk *disk); * zero and will not be set to zero */ void set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size, - bool revalidate) + bool update_bdev) { sector_t capacity = get_capacity(disk); set_capacity(disk, size); - - if (revalidate) - revalidate_disk(disk); + if (update_bdev) + revalidate_disk_size(disk, true); if (capacity != size && capacity != 0 && size != 0) { char *envp[] = { "RESIZE=1", NULL }; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 8e9c9d3a493fae..c340b392452ce6 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -315,8 +315,8 @@ static inline int get_disk_ro(struct gendisk *disk) extern void disk_block_events(struct gendisk *disk); extern void disk_unblock_events(struct gendisk *disk); extern void disk_flush_events(struct gendisk *disk, unsigned int mask); -extern void set_capacity_revalidate_and_notify(struct gendisk *disk, - sector_t size, bool revalidate); +void set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size, + bool update_bdev); extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); /* drivers/char/random.c */ From patchwork Tue Sep 1 15:57:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748921 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 01BF91575 for ; Tue, 1 Sep 2020 15:58:19 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D3E2A206EB for ; Tue, 1 Sep 2020 15:58:18 +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="Gd9YLKEU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3E2A206EB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 1BE1E1396FC07; Tue, 1 Sep 2020 08:58:15 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 21BC01396FBFB for ; Tue, 1 Sep 2020 08:58:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=YMlFrJEyBw+GGxYkmnybpKhHqx0sfDNv5s7PaPhHxwU=; b=Gd9YLKEUh+L4SFkaUhbHG3M8dD CML4P2q8lRLBgi2V/zqNZbsMdET9SOcLwrXiQhlC89FsEOhv4JJUVlczC5tz1NVFJGPZUGNw0mpN5 qzMVcmbfdKTrImeYfVqLp70KKyuHY1d2ubXJy5DbmFDTX/vqy+og9g1EbJ/6WSVHl1eU8SSA2z/HI ytc8BoebmRFkeg1tryurIuFiGvIV6ETH0Mg6xVt+XrjRDBbOJe+pEs56+koko8zHmKVzoDwGo8HoE qpYFiFPkZtW/ERm5Tm+y4EKezU04PHf7JUWHAb6eJCibEvzWG7ZWLoJFdHCtl/sk7HYfM9oltIJYO AW3zTaqw==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fZ-0004Qh-74; Tue, 01 Sep 2020 15:58:01 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 6/9] nvme: opencode revalidate_disk in nvme_validate_ns Date: Tue, 1 Sep 2020 17:57:45 +0200 Message-Id: <20200901155748.2884-7-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: FPCN4OZ4JSZZ34TWZYBDK6V7CL4NCRND X-Message-ID-Hash: FPCN4OZ4JSZZ34TWZYBDK6V7CL4NCRND X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Keep control in the NVMe driver instead of going through an indirect call back into ->revalidate_disk. Also reorder the function a bit to be easier to follow with the additional code. And now that we have removed all callers of revalidate_disk() in the nvme code, ->revalidate_disk is only called from the open code when first opening the device. Which is of course totally pointless as we have a valid size since the initial scan, and will get an updated view through the asynchronous notifiation everytime the size changes. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- drivers/nvme/host/core.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index bc18523774b4be..9428e7deb68b09 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2323,7 +2323,6 @@ static const struct block_device_operations nvme_fops = { .open = nvme_open, .release = nvme_release, .getgeo = nvme_getgeo, - .revalidate_disk= nvme_revalidate_disk, .report_zones = nvme_report_zones, .pr_ops = &nvme_pr_ops, }; @@ -4020,14 +4019,19 @@ static void nvme_ns_remove_by_nsid(struct nvme_ctrl *ctrl, u32 nsid) static void nvme_validate_ns(struct nvme_ctrl *ctrl, unsigned nsid) { struct nvme_ns *ns; + int ret; ns = nvme_find_get_ns(ctrl, nsid); - if (ns) { - if (revalidate_disk(ns->disk)) - nvme_ns_remove(ns); - nvme_put_ns(ns); - } else + if (!ns) { nvme_alloc_ns(ctrl, nsid); + return; + } + + ret = nvme_revalidate_disk(ns->disk); + revalidate_disk_size(ns->disk, ret == 0); + if (ret) + nvme_ns_remove(ns); + nvme_put_ns(ns); } static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl, From patchwork Tue Sep 1 15:57:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748925 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E16F8618 for ; Tue, 1 Sep 2020 15:58:21 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C10E7206EF for ; Tue, 1 Sep 2020 15:58:21 +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="k2qZddWw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C10E7206EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 502251396FC10; Tue, 1 Sep 2020 08:58:18 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 546F21396FC06 for ; Tue, 1 Sep 2020 08:58:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=nRA6JK+4aMp60Yu0KbqG4/pNdu09ibxhHSJ5/A99bDI=; b=k2qZddWw1U3EZJUTGVu0rHSLJs W5NgwgDkMU4Tctn8sp6QDS8uXrMAVU8TzWoAL6ToIpC7KJoKBS+hR10VJaRx7HUlCrn23sdr2GXXV PivvROx3tTElb1yMRSSSuseDaTpRWJpVWM5KD/wTw/IT+YTPLspEFsL9wpeIKfruOS68OSavOcO3b eKoyZN9jt6fhjHPyiO1n+Ltd23usEmrStZ0nhKSCgpp0vMkbLWmtuxBHj1SB6Hdbonp7qcS/5sHw1 h6xT9GKSHXVkxt4Y/hHRE/O0vpV4ONoMUaFGKU12gPJqvqq6SOLh88NGCQe1kbJ3s68Vas9hCHfw2 AZ8ApNWw==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fa-0004R3-Ip; Tue, 01 Sep 2020 15:58:02 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 7/9] sd: open code revalidate_disk Date: Tue, 1 Sep 2020 17:57:46 +0200 Message-Id: <20200901155748.2884-8-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: IPLDS6UYYQAZHCDGQHBZKPAUWX3HB7EC X-Message-ID-Hash: IPLDS6UYYQAZHCDGQHBZKPAUWX3HB7EC X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Instead of calling revalidate_disk just do the work directly by calling sd_revalidate_disk, and revalidate_disk_size where needed. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- drivers/scsi/sd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 95018e650f2d0c..2bec8cd526164d 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -217,7 +217,7 @@ cache_type_store(struct device *dev, struct device_attribute *attr, sd_print_sense_hdr(sdkp, &sshdr); return -EINVAL; } - revalidate_disk(sdkp->disk); + sd_revalidate_disk(sdkp->disk); return count; } @@ -1706,8 +1706,10 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) static void sd_rescan(struct device *dev) { struct scsi_disk *sdkp = dev_get_drvdata(dev); + int ret; - revalidate_disk(sdkp->disk); + ret = sd_revalidate_disk(sdkp->disk); + revalidate_disk_size(sdkp->disk, ret == 0); } static int sd_ioctl(struct block_device *bdev, fmode_t mode, From patchwork Tue Sep 1 15:57:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748929 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 644921575 for ; Tue, 1 Sep 2020 15:58:23 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4366E20767 for ; Tue, 1 Sep 2020 15:58:23 +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="HYmAhoZ6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4366E20767 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 6F3231396FC13; Tue, 1 Sep 2020 08:58:18 -0700 (PDT) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org; receiver= Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 148AB1396FBF7 for ; Tue, 1 Sep 2020 08:58:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=EF13r0+0d9O9nMlCm01+oM4tKYciqyKnGXIGW3kVD84=; b=HYmAhoZ63YSCjnl8OuIdMgC24+ OLAuE5Qyl8+SSIbmk3g4PfdSIPkzBGGetTuDOxX+Qs71QQjZWAzLKzMrACN8ulp7QR2iOUqE4ZVNK 06RJaa6wr36QFWrQPzM/l+J7VvHyUnAfWlNLm19OPiozI/Qs9/Fc/6hqOVJv0n5/Jq2e9uyN/MvTB Erk1SKzkRxjElLUaV/1kuC3vG+fazzPUHr4TI0+fOEtxoYuO96ZKZJCwD4DZy25U4usxk60CTBX5g JMOaZAOsbMVbuPX09gGZ17T4KknRMsn/fTvw5ptusMsDfDiH90pDKkOVpM+A202zJTr0td5QYxw9u KPNZLITw==; Received: from [2001:4bb8:18c:45ba:2f95:e5:ca6b:9b4a] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD8fc-0004RL-8h; Tue, 01 Sep 2020 15:58:04 +0000 From: Christoph Hellwig To: Jens Axboe Subject: [PATCH 8/9] nvdimm: simplify revalidate_disk handling Date: Tue, 1 Sep 2020 17:57:47 +0200 Message-Id: <20200901155748.2884-9-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901155748.2884-1-hch@lst.de> References: <20200901155748.2884-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: 25ZQW4YBXJHWVM5SYA4VXAR4SA5RAMHY X-Message-ID-Hash: 25ZQW4YBXJHWVM5SYA4VXAR4SA5RAMHY X-MailFrom: BATV+00d723da4443b0556009+6218+infradead.org+hch@casper.srs.infradead.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Josef Bacik , dm-devel@redhat.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: The nvdimm block driver abuse revalidate_disk in a strange way, and totally unrelated to what other drivers do. Simplify this by just calling nvdimm_revalidate_disk (which seems rather misnamed) from the probe routines, as the additional bdev size revalidation is pointless at this point, and remove the revalidate_disk methods given that it can only be triggered from add_disk, which is right before the manual calls. Signed-off-by: Christoph Hellwig --- drivers/nvdimm/blk.c | 3 +-- drivers/nvdimm/btt.c | 3 +-- drivers/nvdimm/bus.c | 9 +++------ drivers/nvdimm/nd.h | 2 +- drivers/nvdimm/pmem.c | 3 +-- 5 files changed, 7 insertions(+), 13 deletions(-) diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 1f718381a04553..22e5617b2cea14 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -226,7 +226,6 @@ static int nsblk_rw_bytes(struct nd_namespace_common *ndns, static const struct block_device_operations nd_blk_fops = { .owner = THIS_MODULE, .submit_bio = nd_blk_submit_bio, - .revalidate_disk = nvdimm_revalidate_disk, }; static void nd_blk_release_queue(void *q) @@ -284,7 +283,7 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) set_capacity(disk, available_disk_size >> SECTOR_SHIFT); device_add_disk(dev, disk, NULL); - revalidate_disk(disk); + nvdimm_check_and_set_ro(disk); return 0; } diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 0ff610e728ff6f..0d710140bf93be 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1513,7 +1513,6 @@ static const struct block_device_operations btt_fops = { .submit_bio = btt_submit_bio, .rw_page = btt_rw_page, .getgeo = btt_getgeo, - .revalidate_disk = nvdimm_revalidate_disk, }; static int btt_blk_init(struct btt *btt) @@ -1558,7 +1557,7 @@ static int btt_blk_init(struct btt *btt) set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9); device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL); btt->nd_btt->size = btt->nlba * (u64)btt->sector_size; - revalidate_disk(btt->btt_disk); + nvdimm_check_and_set_ro(btt->btt_disk); return 0; } diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 955265656b96c7..2304c6183822e9 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -628,7 +628,7 @@ int __nd_driver_register(struct nd_device_driver *nd_drv, struct module *owner, } EXPORT_SYMBOL(__nd_driver_register); -int nvdimm_revalidate_disk(struct gendisk *disk) +void nvdimm_check_and_set_ro(struct gendisk *disk) { struct device *dev = disk_to_dev(disk)->parent; struct nd_region *nd_region = to_nd_region(dev->parent); @@ -639,16 +639,13 @@ int nvdimm_revalidate_disk(struct gendisk *disk) * read-only if the disk is already read-only. */ if (disk_ro || nd_region->ro == disk_ro) - return 0; + return; dev_info(dev, "%s read-only, marking %s read-only\n", dev_name(&nd_region->dev), disk->disk_name); set_disk_ro(disk, 1); - - return 0; - } -EXPORT_SYMBOL(nvdimm_revalidate_disk); +EXPORT_SYMBOL(nvdimm_check_and_set_ro); static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 85c1ae813ea318..72740108ba4206 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -361,7 +361,7 @@ u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region); void nvdimm_bus_lock(struct device *dev); void nvdimm_bus_unlock(struct device *dev); bool is_nvdimm_bus_locked(struct device *dev); -int nvdimm_revalidate_disk(struct gendisk *disk); +void nvdimm_check_and_set_ro(struct gendisk *disk); void nvdimm_drvdata_release(struct kref *kref); void put_ndd(struct nvdimm_drvdata *ndd); int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index fab29b514372d0..140cf3b9000c60 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -281,7 +281,6 @@ static const struct block_device_operations pmem_fops = { .owner = THIS_MODULE, .submit_bio = pmem_submit_bio, .rw_page = pmem_rw_page, - .revalidate_disk = nvdimm_revalidate_disk, }; static int pmem_dax_zero_page_range(struct dax_device *dax_dev, pgoff_t pgoff, @@ -501,7 +500,7 @@ static int pmem_attach_disk(struct device *dev, if (devm_add_action_or_reset(dev, pmem_release_disk, pmem)) return -ENOMEM; - revalidate_disk(disk); + nvdimm_check_and_set_ro(disk); pmem->bb_state = sysfs_get_dirent(disk_to_dev(disk)->kobj.sd, "badblocks"); From patchwork Tue Sep 1 15:57:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11748933 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 33C341575 for ; Tue, 1 Sep 2020 15:58:25 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 12C49206EB for ; Tue, 1 Sep 2020 15:58:24 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Signed-off-by: Christoph Hellwig Acked-by: Song Liu Reviewed-by: Johannes Thumshirn --- drivers/md/md.h | 2 +- fs/block_dev.c | 19 ------------------- include/linux/genhd.h | 1 - 3 files changed, 1 insertion(+), 21 deletions(-) diff --git a/drivers/md/md.h b/drivers/md/md.h index d9c4e6b7e9398d..f9e2ccdd22c478 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -397,7 +397,7 @@ struct mddev { * These locks are separate due to conflicting interactions * with bdev->bd_mutex. * Lock ordering is: - * reconfig_mutex -> bd_mutex : e.g. do_md_run -> revalidate_disk + * reconfig_mutex -> bd_mutex * bd_mutex -> open_mutex: e.g. __blkdev_get -> md_open */ struct mutex open_mutex; diff --git a/fs/block_dev.c b/fs/block_dev.c index 85f013315d48b3..0771836d0220bd 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1339,25 +1339,6 @@ void revalidate_disk_size(struct gendisk *disk, bool verbose) } EXPORT_SYMBOL(revalidate_disk_size); -/** - * revalidate_disk - wrapper for lower-level driver's revalidate_disk call-back - * @disk: struct gendisk to be revalidated - * - * This routine is a wrapper for lower-level driver's revalidate_disk - * call-backs. It is used to do common pre and post operations needed - * for all revalidate_disk operations. - */ -int revalidate_disk(struct gendisk *disk) -{ - int ret = 0; - - if (disk->fops->revalidate_disk) - ret = disk->fops->revalidate_disk(disk); - revalidate_disk_size(disk, ret == 0); - return ret; -} -EXPORT_SYMBOL(revalidate_disk); - /* * This routine checks whether a removable media has been changed, * and invalidates all buffer-cache-entries in that case. This diff --git a/include/linux/genhd.h b/include/linux/genhd.h index c340b392452ce6..2cdc41a3fb6a57 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -372,7 +372,6 @@ extern void blk_unregister_region(dev_t devt, unsigned long range); int register_blkdev(unsigned int major, const char *name); void unregister_blkdev(unsigned int major, const char *name); -int revalidate_disk(struct gendisk *disk); void revalidate_disk_size(struct gendisk *disk, bool verbose); int check_disk_change(struct block_device *bdev); int __invalidate_device(struct block_device *bdev, bool kill_dirty);