blk_update_request

Langue: en

Autres versions - même langue

Version: May 2009 (fedora - 06/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

blk_update_request - Special helper function for request stacking drivers

SYNOPSIS

void blk_update_request(struct request * rq, int error, unsigned int nr_bytes);

ARGUMENTS

rq

the request being processed

error


0 for success, < 0 for error

nr_bytes

number of bytes to complete rq

DESCRIPTION

Ends I/O on a number of bytes attached to rq, but doesn't complete the request structure even if rq doesn't have leftover. If rq has leftover, sets it up for the next range of segments.

This special helper function is only for request stacking drivers (e.g. request-based dm) so that they can handle partial completion. Actual device drivers should use blk_end_request instead.