__GET_REQUEST(9)

NAME
__get_request - get a free request

SYNOPSIS

struct request * __get_request(struct request_list * rl, unsigned int op, struct bio * bio, gfp_t gfp_mask);

ARGUMENTS

rl
    request list to allocate from

op
    operation and 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*.

COPYRIGHT