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 called with q->queue_lock held and,
Returns ERR_PTR on failure, with q->queue_lock held.
Returns request pointer on success, with q->queue_lock *not held*.