1BLKDEV_GET(9)                    The Linux VFS                   BLKDEV_GET(9)
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NAME

6       blkdev_get - open a block device
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SYNOPSIS

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

13       bdev
14           block_device to open
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16       mode
17           FMODE_* mask
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19       holder
20           exclusive holder identifier
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DESCRIPTION

23       Open bdev with mode. If mode includes FMODE_EXCL, bdev is open with
24       exclusive access. Specifying FMODE_EXCL with NULLholder is invalid.
25       Exclusive opens may nest for the same holder.
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27       On success, the reference count of bdev is unchanged. On failure, bdev
28       is put.
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CONTEXT

31       Might sleep.
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RETURNS

34       0 on success, -errno on failure.
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37Kernel Hackers Manual 3.10         June 2019                     BLKDEV_GET(9)
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