blkdev_get (9)

int blkdev_get(struct block_device * bdev, fmode_t mode, void * holder);

bdev

block_device to open

mode

FMODE_* mask

holder

exclusive holder identifier

Open bdev with mode. If mode includes FMODE_EXCL, bdev is open with exclusive access. Specifying FMODE_EXCL with NULLholder is invalid. Exclusive opens may nest for the same holder.

On success, the reference count of bdev is unchanged. On failure, bdev is put.

Might sleep.

0 on success, -errno on failure.