rq_ioc(9) centos man page | unix.com

RQ_IOC(9)							   Block Devices							 RQ_IOC(9)

NAME
       rq_ioc - determine io_context for request allocation

SYNOPSIS
       struct io_context * rq_ioc(struct bio * bio);

ARGUMENTS
       bio
	   request being allocated is for this bio (can be NULL)

DESCRIPTION
       Determine io_context to use for request allocation for bio. May return NULL if current->io_context doesn't exist.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014								 RQ_IOC(9)