1BLK_RQ_MAP_KERN(9)               Block Devices              BLK_RQ_MAP_KERN(9)
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NAME

6       blk_rq_map_kern - map kernel data to a request, for REQ_TYPE_BLOCK_PC
7       usage
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SYNOPSIS

10       int blk_rq_map_kern(struct request_queue * q, struct request * rq,
11                           void * kbuf, unsigned int len, gfp_t gfp_mask);
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ARGUMENTS

14       q
15           request queue where request should be inserted
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17       rq
18           request to fill
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20       kbuf
21           the kernel buffer
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23       len
24           length of user data
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26       gfp_mask
27           memory allocation flags
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DESCRIPTION

30       Data will be mapped directly if possible. Otherwise a bounce buffer is
31       used. Can be called multple times to append multple buffers.
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34Kernel Hackers Manual 3.10         June 2019                BLK_RQ_MAP_KERN(9)
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