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.