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Tue, 4 Jul 2023 14:22:24 +0200 (CEST) From: Jan Kara To: Date: Tue, 4 Jul 2023 14:21:38 +0200 Message-Id: <20230704122224.16257-11-jack@suse.cz> In-Reply-To: <20230629165206.383-1-jack@suse.cz> References: <20230629165206.383-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2807; i=jack@suse.cz; h=from:subject; bh=XeDjEIT1p9+MdDtB0DyCNgxyoNTaPF7DUrlNzaXtSIM=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBkpA7UHFKsSVynaLOp/FheWju2iEmpkghUNeLrh2gQ MFkgdDKJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZKQO1AAKCRCcnaoHP2RA2ST4CA C9agmaJLWVzqIJPzboONp8Xr/aw4rXGvMeHGLqgMuoAr3T0E26qyrSfkGrdgPfs2tHAzNJFXHMc/wa XgV1DUzYSYWD/s/n9w2wbRF16GvqWxbvL8PGYce+A1xyK8QbbnhmoREk0dOOZc/Mja+mASR8d/T9L/ d0LtJfeK7tdMWr9fu51au5tj5ie6tS1O8eka/XhXuEpG39sVgP34wd6WSnCLxxfEqiKokKVfFextol YAlMeYvfbTIFsp90fa15NkTR8QJd8gq6IQnbop8RKTL7XkZRsudtLs4b6iPtH4kS4hMqayRl3icuOY cHj1ndGNo2WYi+0RkDM70LbDgZ00/z X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Subject: [dm-devel] [PATCH 11/32] dm: Convert to blkdev_get_handle_by_dev() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jens Axboe , Jan Kara , Mike Snitzer , Christoph Hellwig , dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, Alasdair Kergon Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: suse.cz Convert device mapper to use blkdev_get_handle_by_dev() and pass the handle around. CC: Alasdair Kergon CC: Mike Snitzer CC: dm-devel@redhat.com Signed-off-by: Jan Kara --- drivers/md/dm.c | 20 +++++++++++--------- include/linux/device-mapper.h | 1 + 2 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f0f118ab20fa..d73905149bef 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -742,7 +742,7 @@ static struct table_device *open_table_device(struct mapped_device *md, dev_t dev, blk_mode_t mode) { struct table_device *td; - struct block_device *bdev; + struct bdev_handle *bdev_handle; u64 part_off; int r; @@ -751,9 +751,9 @@ static struct table_device *open_table_device(struct mapped_device *md, return ERR_PTR(-ENOMEM); refcount_set(&td->count, 1); - bdev = blkdev_get_by_dev(dev, mode, _dm_claim_ptr, NULL); - if (IS_ERR(bdev)) { - r = PTR_ERR(bdev); + bdev_handle = blkdev_get_handle_by_dev(dev, mode, _dm_claim_ptr, NULL); + if (IS_ERR(bdev_handle)) { + r = PTR_ERR(bdev_handle); goto out_free_td; } @@ -763,20 +763,22 @@ static struct table_device *open_table_device(struct mapped_device *md, * called. */ if (md->disk->slave_dir) { - r = bd_link_disk_holder(bdev, md->disk); + r = bd_link_disk_holder(bdev_handle->bdev, md->disk); if (r) goto out_blkdev_put; } td->dm_dev.mode = mode; - td->dm_dev.bdev = bdev; - td->dm_dev.dax_dev = fs_dax_get_by_bdev(bdev, &part_off, NULL, NULL); + td->dm_dev.bdev = bdev_handle->bdev; + td->dm_dev.bdev_handle = bdev_handle; + td->dm_dev.dax_dev = fs_dax_get_by_bdev(bdev_handle->bdev, &part_off, + NULL, NULL); format_dev_t(td->dm_dev.name, dev); list_add(&td->list, &md->table_devices); return td; out_blkdev_put: - blkdev_put(bdev, _dm_claim_ptr); + blkdev_handle_put(bdev_handle); out_free_td: kfree(td); return ERR_PTR(r); @@ -789,7 +791,7 @@ static void close_table_device(struct table_device *td, struct mapped_device *md { if (md->disk->slave_dir) bd_unlink_disk_holder(td->dm_dev.bdev, md->disk); - blkdev_put(td->dm_dev.bdev, _dm_claim_ptr); + blkdev_handle_put(td->dm_dev.bdev_handle); put_dax(td->dm_dev.dax_dev); list_del(&td->list); kfree(td); diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 69d0435c7ebb..772ab4d74d94 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -165,6 +165,7 @@ void dm_error(const char *message); struct dm_dev { struct block_device *bdev; + struct bdev_handle *bdev_handle; struct dax_device *dax_dev; blk_mode_t mode; char name[16];