1. NAME▲

get_request - get a free request

2. SYNOPSIS ▲

struct request * get_request(struct request_queue *  q , int  rw_flags , struct bio *  bio , gfp_t  gfp_mask );

3. ARGUMENTS ▲

q
    request_queue to allocate request from

rw_flags
    RW and SYNC flags

bio
    bio to allocate request for (can be NULL)

gfp_mask
    allocation mask

4. DESCRIPTION ▲

Get a free request from q. If __GFP_WAIT is set in gfp_mask, this function keeps retrying under memory pressure and fails iff 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*.

5. COPYRIGHT ▲