bio_copy_kern(9) copy kernel address into bio

SYNOPSIS

struct bio * bio_copy_kern(struct request_queue * q, void * data, unsigned int len, gfp_t gfp_mask, int reading);

ARGUMENTS

q

the struct request_queue for the bio

data

pointer to buffer to copy

len

length in bytes

gfp_mask

allocation flags for bio and page allocation

reading

data direction is READ

DESCRIPTION

copy the kernel address into a bio suitable for io to a block device. Returns an error pointer in case of error.

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