__GET_REQUEST(9) Block Devices __GET_REQUEST(9)NAME__get_request - get a free request
SYNOPSIS
struct request * __get_request(struct request_list * rl, int rw_flags,
struct bio * bio, gfp_t gfp_mask);
ARGUMENTS
rl
request list to allocate from
rw_flags
RW and SYNC flags
bio
bio to allocate request for (can be NULL)
gfp_mask
allocation mask
DESCRIPTION
Get a free request from q. This function may fail under memory pressure
or if q is dead.
Must be callled with q->queue_lock held and, Returns NULL on failure,
with q->queue_lock held. Returns !NULL on success, with q->queue_lock
*not held*.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 __GET_REQUEST(9)