bio_copy_user

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

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.