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

6       blkdev_get_by_dev - open a block device by device number
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SYNOPSIS

9       struct block_device * blkdev_get_by_dev(dev_t dev, fmode_t mode,
10                                               void * holder);
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ARGUMENTS

13       dev
14           device number of 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 the blockdevice described by device number dev.  mode and holder
24       are identical to blkdev_get.
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26       Use it ONLY if you really do not have anything better - i.e. when you
27       are behind a truly sucky interface and all you are given is a device
28       number. _Never_ to be used for internal purposes. If you ever need it -
29       reconsider your API.
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31       On success, the returned block_device has reference count of one.
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CONTEXT

34       Might sleep.
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RETURNS

37       Pointer to block_device on success, ERR_PTR(-errno) on failure.
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40Kernel Hackers Manual 3.10         June 2019              BLKDEV_GET_BY_DEV(9)
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