bio_copy_user(9)
NAME
bio_copy_user - copy user data to bio
SYNOPSIS
struct bio * bio_copy_user(struct request_queue * q,
unsigned long uaddr, unsigned int len,
int write_to_vm);
ARGUMENTS
- q
- destination block queue
- uaddr
- start of user address
- len
- length in bytes
- write_to_vm
- bool indicating writing to pages or not
DESCRIPTION
Prepares and returns a bio for indirect user io, bouncing data to/from
kernel pages as necessary. Must be paired with call bio_uncopy_user on
io completion.