diff options
Diffstat (limited to 'block/bdev.c')
| -rw-r--r-- | block/bdev.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/block/bdev.c b/block/bdev.c index b1d087e5e205..8bf93a19041b 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -665,7 +665,7 @@ static void blkdev_flush_mapping(struct block_device *bdev) static int blkdev_get_whole(struct block_device *bdev, fmode_t mode) { struct gendisk *disk = bdev->bd_disk; - int ret = 0; + int ret; if (disk->fops->open) { ret = disk->fops->open(bdev, mode); @@ -750,14 +750,6 @@ struct block_device *blkdev_get_no_open(dev_t dev) if (!kobject_get_unless_zero(&bdev->bd_device.kobj)) bdev = NULL; iput(inode); - - if (!bdev) - return NULL; - if ((bdev->bd_disk->flags & GENHD_FL_HIDDEN)) { - put_device(&bdev->bd_device); - return NULL; - } - return bdev; } @@ -837,7 +829,7 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder) * used in blkdev_get/put(). */ if ((mode & FMODE_WRITE) && !bdev->bd_write_holder && - (disk->flags & GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE)) { + (disk->event_flags & DISK_EVENT_FLAG_BLOCK_ON_EXCL_WRITE)) { bdev->bd_write_holder = true; unblock_events = false; } @@ -963,15 +955,15 @@ void blkdev_put(struct block_device *bdev, fmode_t mode) EXPORT_SYMBOL(blkdev_put); /** - * lookup_bdev - lookup a struct block_device by name - * @pathname: special file representing the block device - * @dev: return value of the block device's dev_t + * lookup_bdev() - Look up a struct block_device by name. + * @pathname: Name of the block device in the filesystem. + * @dev: Pointer to the block device's dev_t, if found. * * Lookup the block device's dev_t at @pathname in the current - * namespace if possible and return it by @dev. + * namespace if possible and return it in @dev. * - * RETURNS: - * 0 if succeeded, errno otherwise. + * Context: May sleep. + * Return: 0 if succeeded, negative errno otherwise. */ int lookup_bdev(const char *pathname, dev_t *dev) { |