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bio_copy_user
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
bio_copy_user - copy user data to bioSYNOPSIS
- 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.
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