diff options
Diffstat (limited to 'drivers/staging/hv/blkvsc_drv.c')
-rw-r--r-- | drivers/staging/hv/blkvsc_drv.c | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c index 46daade7a9e..3612574ca52 100644 --- a/drivers/staging/hv/blkvsc_drv.c +++ b/drivers/staging/hv/blkvsc_drv.c @@ -518,22 +518,18 @@ static int blkvsc_remove(struct hv_device *dev) blkvsc_do_operation(blkdev, DO_FLUSH); - blk_cleanup_queue(blkdev->gd->queue); + if (blkdev->users == 0) { + del_gendisk(blkdev->gd); + put_disk(blkdev->gd); + blk_cleanup_queue(blkdev->gd->queue); - /* - * Call to the vsc driver to let it know that the device is being - * removed - */ - storvsc_dev_remove(dev); - - del_gendisk(blkdev->gd); + storvsc_dev_remove(blkdev->device_ctx); - kmem_cache_destroy(blkdev->request_pool); - - kfree(blkdev); + kmem_cache_destroy(blkdev->request_pool); + kfree(blkdev); + } return 0; - } static void blkvsc_shutdown(struct hv_device *dev) @@ -568,13 +564,23 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode) struct block_device_context *blkdev = disk->private_data; unsigned long flags; - if (blkdev->users == 1) { + spin_lock_irqsave(&blkdev->lock, flags); + + if ((--blkdev->users == 0) && (blkdev->shutting_down)) { + blk_stop_queue(blkdev->gd->queue); + spin_unlock_irqrestore(&blkdev->lock, flags); + blkvsc_do_operation(blkdev, DO_FLUSH); - } + del_gendisk(blkdev->gd); + put_disk(blkdev->gd); + blk_cleanup_queue(blkdev->gd->queue); - spin_lock_irqsave(&blkdev->lock, flags); - blkdev->users--; - spin_unlock_irqrestore(&blkdev->lock, flags); + storvsc_dev_remove(blkdev->device_ctx); + + kmem_cache_destroy(blkdev->request_pool); + kfree(blkdev); + } else + spin_unlock_irqrestore(&blkdev->lock, flags); return 0; } @@ -824,7 +830,6 @@ static int blkvsc_drv_init(void) BUILD_BUG_ON(sizeof(sector_t) != 8); memcpy(&drv->dev_type, &dev_type, sizeof(struct hv_guid)); - drv->name = drv_name; drv->driver.name = drv_name; /* The driver belongs to vmbus */ @@ -921,7 +926,6 @@ static int blkvsc_probe(struct hv_device *dev) else blkdev->gd->first_minor = 0; blkdev->gd->fops = &block_ops; - blkdev->gd->events = DISK_EVENT_MEDIA_CHANGE; blkdev->gd->private_data = blkdev; blkdev->gd->driverfs_dev = &(blkdev->device_ctx->device); sprintf(blkdev->gd->disk_name, "hd%c", 'a' + major_info.index); |