BLKDEV_GET(9) The Linux VFS BLKDEV_GET(9)
NAME
blkdev_get - open a block device
SYNOPSIS
int blkdev_get(struct block_device * bdev, fmode_t mode, void * holder);
ARGUMENTS
bdev
block_device to open
mode
FMODE_* mask
holder
exclusive holder identifier
DESCRIPTION
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.
CONTEXT
Might sleep.
RETURNS
0 on success, -errno on failure.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 BLKDEV_GET(9)
