get_request man page on Scientific

get_request man page on Scientific

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GET_REQUEST(9)			 Block Devices			GET_REQUEST(9)

NAME
       get_request - get a free request

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

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

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*.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013			GET_REQUEST(9)

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