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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-24 15:26:44 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-24 15:26:44 -0400
commitb2e961eb2e7a54ffaae82f8e0198b26b54ade98e (patch)
tree33e5192a4c84e717d8c2f8235f268216b01053f7 /include/linux/blkdev.h
parentb8c1c5da1520977cb55a358f20fc09567d40cad9 (diff)
parent71f65e6bd7651610d2d6aeb3c12aab63667ace30 (diff)
Merge branch 'request-queue-t' of git://git.kernel.dk/linux-2.6-block
* 'request-queue-t' of git://git.kernel.dk/linux-2.6-block: [BLOCK] Add request_queue_t and mark it deprecated [BLOCK] Get rid of request_queue_t typedef
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h141
1 files changed, 71 insertions, 70 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 695e34964cb7..a1c96d9ee720 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -37,7 +37,7 @@
37struct scsi_ioctl_command; 37struct scsi_ioctl_command;
38 38
39struct request_queue; 39struct request_queue;
40typedef struct request_queue request_queue_t; 40typedef struct request_queue request_queue_t __deprecated;
41struct elevator_queue; 41struct elevator_queue;
42typedef struct elevator_queue elevator_t; 42typedef struct elevator_queue elevator_t;
43struct request_pm_state; 43struct request_pm_state;
@@ -233,7 +233,7 @@ struct request {
233 struct list_head queuelist; 233 struct list_head queuelist;
234 struct list_head donelist; 234 struct list_head donelist;
235 235
236 request_queue_t *q; 236 struct request_queue *q;
237 237
238 unsigned int cmd_flags; 238 unsigned int cmd_flags;
239 enum rq_cmd_type_bits cmd_type; 239 enum rq_cmd_type_bits cmd_type;
@@ -337,15 +337,15 @@ struct request_pm_state
337 337
338#include <linux/elevator.h> 338#include <linux/elevator.h>
339 339
340typedef void (request_fn_proc) (request_queue_t *q); 340typedef void (request_fn_proc) (struct request_queue *q);
341typedef int (make_request_fn) (request_queue_t *q, struct bio *bio); 341typedef int (make_request_fn) (struct request_queue *q, struct bio *bio);
342typedef int (prep_rq_fn) (request_queue_t *, struct request *); 342typedef int (prep_rq_fn) (struct request_queue *, struct request *);
343typedef void (unplug_fn) (request_queue_t *); 343typedef void (unplug_fn) (struct request_queue *);
344 344
345struct bio_vec; 345struct bio_vec;
346typedef int (merge_bvec_fn) (request_queue_t *, struct bio *, struct bio_vec *); 346typedef int (merge_bvec_fn) (struct request_queue *, struct bio *, struct bio_vec *);
347typedef int (issue_flush_fn) (request_queue_t *, struct gendisk *, sector_t *); 347typedef int (issue_flush_fn) (struct request_queue *, struct gendisk *, sector_t *);
348typedef void (prepare_flush_fn) (request_queue_t *, struct request *); 348typedef void (prepare_flush_fn) (struct request_queue *, struct request *);
349typedef void (softirq_done_fn)(struct request *); 349typedef void (softirq_done_fn)(struct request *);
350 350
351enum blk_queue_state { 351enum blk_queue_state {
@@ -626,13 +626,13 @@ extern unsigned long blk_max_low_pfn, blk_max_pfn;
626 626
627#ifdef CONFIG_BOUNCE 627#ifdef CONFIG_BOUNCE
628extern int init_emergency_isa_pool(void); 628extern int init_emergency_isa_pool(void);
629extern void blk_queue_bounce(request_queue_t *q, struct bio **bio); 629extern void blk_queue_bounce(struct request_queue *q, struct bio **bio);
630#else 630#else
631static inline int init_emergency_isa_pool(void) 631static inline int init_emergency_isa_pool(void)
632{ 632{
633 return 0; 633 return 0;
634} 634}
635static inline void blk_queue_bounce(request_queue_t *q, struct bio **bio) 635static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio)
636{ 636{
637} 637}
638#endif /* CONFIG_MMU */ 638#endif /* CONFIG_MMU */
@@ -646,14 +646,14 @@ extern void blk_unregister_queue(struct gendisk *disk);
646extern void register_disk(struct gendisk *dev); 646extern void register_disk(struct gendisk *dev);
647extern void generic_make_request(struct bio *bio); 647extern void generic_make_request(struct bio *bio);
648extern void blk_put_request(struct request *); 648extern void blk_put_request(struct request *);
649extern void __blk_put_request(request_queue_t *, struct request *); 649extern void __blk_put_request(struct request_queue *, struct request *);
650extern void blk_end_sync_rq(struct request *rq, int error); 650extern void blk_end_sync_rq(struct request *rq, int error);
651extern struct request *blk_get_request(request_queue_t *, int, gfp_t); 651extern struct request *blk_get_request(struct request_queue *, int, gfp_t);
652extern void blk_insert_request(request_queue_t *, struct request *, int, void *); 652extern void blk_insert_request(struct request_queue *, struct request *, int, void *);
653extern void blk_requeue_request(request_queue_t *, struct request *); 653extern void blk_requeue_request(struct request_queue *, struct request *);
654extern void blk_plug_device(request_queue_t *); 654extern void blk_plug_device(struct request_queue *);
655extern int blk_remove_plug(request_queue_t *); 655extern int blk_remove_plug(struct request_queue *);
656extern void blk_recount_segments(request_queue_t *, struct bio *); 656extern void blk_recount_segments(struct request_queue *, struct bio *);
657extern int scsi_cmd_ioctl(struct file *, struct request_queue *, 657extern int scsi_cmd_ioctl(struct file *, struct request_queue *,
658 struct gendisk *, unsigned int, void __user *); 658 struct gendisk *, unsigned int, void __user *);
659extern int sg_scsi_ioctl(struct file *, struct request_queue *, 659extern int sg_scsi_ioctl(struct file *, struct request_queue *,
@@ -662,14 +662,15 @@ extern int sg_scsi_ioctl(struct file *, struct request_queue *,
662/* 662/*
663 * Temporary export, until SCSI gets fixed up. 663 * Temporary export, until SCSI gets fixed up.
664 */ 664 */
665extern int ll_back_merge_fn(request_queue_t *, struct request *, struct bio *); 665extern int ll_back_merge_fn(struct request_queue *, struct request *,
666 struct bio *);
666 667
667/* 668/*
668 * A queue has just exitted congestion. Note this in the global counter of 669 * A queue has just exitted congestion. Note this in the global counter of
669 * congested queues, and wake up anyone who was waiting for requests to be 670 * congested queues, and wake up anyone who was waiting for requests to be
670 * put back. 671 * put back.
671 */ 672 */
672static inline void blk_clear_queue_congested(request_queue_t *q, int rw) 673static inline void blk_clear_queue_congested(struct request_queue *q, int rw)
673{ 674{
674 clear_bdi_congested(&q->backing_dev_info, rw); 675 clear_bdi_congested(&q->backing_dev_info, rw);
675} 676}
@@ -678,29 +679,29 @@ static inline void blk_clear_queue_congested(request_queue_t *q, int rw)
678 * A queue has just entered congestion. Flag that in the queue's VM-visible 679 * A queue has just entered congestion. Flag that in the queue's VM-visible
679 * state flags and increment the global gounter of congested queues. 680 * state flags and increment the global gounter of congested queues.
680 */ 681 */
681static inline void blk_set_queue_congested(request_queue_t *q, int rw) 682static inline void blk_set_queue_congested(struct request_queue *q, int rw)
682{ 683{
683 set_bdi_congested(&q->backing_dev_info, rw); 684 set_bdi_congested(&q->backing_dev_info, rw);
684} 685}
685 686
686extern void blk_start_queue(request_queue_t *q); 687extern void blk_start_queue(struct request_queue *q);
687extern void blk_stop_queue(request_queue_t *q); 688extern void blk_stop_queue(struct request_queue *q);
688extern void blk_sync_queue(struct request_queue *q); 689extern void blk_sync_queue(struct request_queue *q);
689extern void __blk_stop_queue(request_queue_t *q); 690extern void __blk_stop_queue(struct request_queue *q);
690extern void blk_run_queue(request_queue_t *); 691extern void blk_run_queue(struct request_queue *);
691extern void blk_start_queueing(request_queue_t *); 692extern void blk_start_queueing(struct request_queue *);
692extern int blk_rq_map_user(request_queue_t *, struct request *, void __user *, unsigned long); 693extern int blk_rq_map_user(struct request_queue *, struct request *, void __user *, unsigned long);
693extern int blk_rq_unmap_user(struct bio *); 694extern int blk_rq_unmap_user(struct bio *);
694extern int blk_rq_map_kern(request_queue_t *, struct request *, void *, unsigned int, gfp_t); 695extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
695extern int blk_rq_map_user_iov(request_queue_t *, struct request *, 696extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
696 struct sg_iovec *, int, unsigned int); 697 struct sg_iovec *, int, unsigned int);
697extern int blk_execute_rq(request_queue_t *, struct gendisk *, 698extern int blk_execute_rq(struct request_queue *, struct gendisk *,
698 struct request *, int); 699 struct request *, int);
699extern void blk_execute_rq_nowait(request_queue_t *, struct gendisk *, 700extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
700 struct request *, int, rq_end_io_fn *); 701 struct request *, int, rq_end_io_fn *);
701extern int blk_verify_command(unsigned char *, int); 702extern int blk_verify_command(unsigned char *, int);
702 703
703static inline request_queue_t *bdev_get_queue(struct block_device *bdev) 704static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
704{ 705{
705 return bdev->bd_disk->queue; 706 return bdev->bd_disk->queue;
706} 707}
@@ -749,41 +750,41 @@ static inline void blkdev_dequeue_request(struct request *req)
749/* 750/*
750 * Access functions for manipulating queue properties 751 * Access functions for manipulating queue properties
751 */ 752 */
752extern request_queue_t *blk_init_queue_node(request_fn_proc *rfn, 753extern struct request_queue *blk_init_queue_node(request_fn_proc *rfn,
753 spinlock_t *lock, int node_id); 754 spinlock_t *lock, int node_id);
754extern request_queue_t *blk_init_queue(request_fn_proc *, spinlock_t *); 755extern struct request_queue *blk_init_queue(request_fn_proc *, spinlock_t *);
755extern void blk_cleanup_queue(request_queue_t *); 756extern void blk_cleanup_queue(struct request_queue *);
756extern void blk_queue_make_request(request_queue_t *, make_request_fn *); 757extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
757extern void blk_queue_bounce_limit(request_queue_t *, u64); 758extern void blk_queue_bounce_limit(struct request_queue *, u64);
758extern void blk_queue_max_sectors(request_queue_t *, unsigned int); 759extern void blk_queue_max_sectors(struct request_queue *, unsigned int);
759extern void blk_queue_max_phys_segments(request_queue_t *, unsigned short); 760extern void blk_queue_max_phys_segments(struct request_queue *, unsigned short);
760extern void blk_queue_max_hw_segments(request_queue_t *, unsigned short); 761extern void blk_queue_max_hw_segments(struct request_queue *, unsigned short);
761extern void blk_queue_max_segment_size(request_queue_t *, unsigned int); 762extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
762extern void blk_queue_hardsect_size(request_queue_t *, unsigned short); 763extern void blk_queue_hardsect_size(struct request_queue *, unsigned short);
763extern void blk_queue_stack_limits(request_queue_t *t, request_queue_t *b); 764extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b);
764extern void blk_queue_segment_boundary(request_queue_t *, unsigned long); 765extern void blk_queue_segment_boundary(struct request_queue *, unsigned long);
765extern void blk_queue_prep_rq(request_queue_t *, prep_rq_fn *pfn); 766extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);
766extern void blk_queue_merge_bvec(request_queue_t *, merge_bvec_fn *); 767extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *);
767extern void blk_queue_dma_alignment(request_queue_t *, int); 768extern void blk_queue_dma_alignment(struct request_queue *, int);
768extern void blk_queue_softirq_done(request_queue_t *, softirq_done_fn *); 769extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
769extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev); 770extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
770extern int blk_queue_ordered(request_queue_t *, unsigned, prepare_flush_fn *); 771extern int blk_queue_ordered(struct request_queue *, unsigned, prepare_flush_fn *);
771extern void blk_queue_issue_flush_fn(request_queue_t *, issue_flush_fn *); 772extern void blk_queue_issue_flush_fn(struct request_queue *, issue_flush_fn *);
772extern int blk_do_ordered(request_queue_t *, struct request **); 773extern int blk_do_ordered(struct request_queue *, struct request **);
773extern unsigned blk_ordered_cur_seq(request_queue_t *); 774extern unsigned blk_ordered_cur_seq(struct request_queue *);
774extern unsigned blk_ordered_req_seq(struct request *); 775extern unsigned blk_ordered_req_seq(struct request *);
775extern void blk_ordered_complete_seq(request_queue_t *, unsigned, int); 776extern void blk_ordered_complete_seq(struct request_queue *, unsigned, int);
776 777
777extern int blk_rq_map_sg(request_queue_t *, struct request *, struct scatterlist *); 778extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
778extern void blk_dump_rq_flags(struct request *, char *); 779extern void blk_dump_rq_flags(struct request *, char *);
779extern void generic_unplug_device(request_queue_t *); 780extern void generic_unplug_device(struct request_queue *);
780extern void __generic_unplug_device(request_queue_t *); 781extern void __generic_unplug_device(struct request_queue *);
781extern long nr_blockdev_pages(void); 782extern long nr_blockdev_pages(void);
782 783
783int blk_get_queue(request_queue_t *); 784int blk_get_queue(struct request_queue *);
784request_queue_t *blk_alloc_queue(gfp_t); 785struct request_queue *blk_alloc_queue(gfp_t);
785request_queue_t *blk_alloc_queue_node(gfp_t, int); 786struct request_queue *blk_alloc_queue_node(gfp_t, int);
786extern void blk_put_queue(request_queue_t *); 787extern void blk_put_queue(struct request_queue *);
787 788
788/* 789/*
789 * tag stuff 790 * tag stuff
@@ -791,13 +792,13 @@ extern void blk_put_queue(request_queue_t *);
791#define blk_queue_tag_depth(q) ((q)->queue_tags->busy) 792#define blk_queue_tag_depth(q) ((q)->queue_tags->busy)
792#define blk_queue_tag_queue(q) ((q)->queue_tags->busy < (q)->queue_tags->max_depth) 793#define blk_queue_tag_queue(q) ((q)->queue_tags->busy < (q)->queue_tags->max_depth)
793#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED) 794#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
794extern int blk_queue_start_tag(request_queue_t *, struct request *); 795extern int blk_queue_start_tag(struct request_queue *, struct request *);
795extern struct request *blk_queue_find_tag(request_queue_t *, int); 796extern struct request *blk_queue_find_tag(struct request_queue *, int);
796extern void blk_queue_end_tag(request_queue_t *, struct request *); 797extern void blk_queue_end_tag(struct request_queue *, struct request *);
797extern int blk_queue_init_tags(request_queue_t *, int, struct blk_queue_tag *); 798extern int blk_queue_init_tags(struct request_queue *, int, struct blk_queue_tag *);
798extern void blk_queue_free_tags(request_queue_t *); 799extern void blk_queue_free_tags(struct request_queue *);
799extern int blk_queue_resize_tags(request_queue_t *, int); 800extern int blk_queue_resize_tags(struct request_queue *, int);
800extern void blk_queue_invalidate_tags(request_queue_t *); 801extern void blk_queue_invalidate_tags(struct request_queue *);
801extern struct blk_queue_tag *blk_init_tags(int); 802extern struct blk_queue_tag *blk_init_tags(int);
802extern void blk_free_tags(struct blk_queue_tag *); 803extern void blk_free_tags(struct blk_queue_tag *);
803 804
@@ -809,7 +810,7 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
809 return bqt->tag_index[tag]; 810 return bqt->tag_index[tag];
810} 811}
811 812
812extern void blk_rq_bio_prep(request_queue_t *, struct request *, struct bio *); 813extern void blk_rq_bio_prep(struct request_queue *, struct request *, struct bio *);
813extern int blkdev_issue_flush(struct block_device *, sector_t *); 814extern int blkdev_issue_flush(struct block_device *, sector_t *);
814 815
815#define MAX_PHYS_SEGMENTS 128 816#define MAX_PHYS_SEGMENTS 128
@@ -821,7 +822,7 @@ extern int blkdev_issue_flush(struct block_device *, sector_t *);
821 822
822#define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist) 823#define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist)
823 824
824static inline int queue_hardsect_size(request_queue_t *q) 825static inline int queue_hardsect_size(struct request_queue *q)
825{ 826{
826 int retval = 512; 827 int retval = 512;
827 828
@@ -836,7 +837,7 @@ static inline int bdev_hardsect_size(struct block_device *bdev)
836 return queue_hardsect_size(bdev_get_queue(bdev)); 837 return queue_hardsect_size(bdev_get_queue(bdev));
837} 838}
838 839
839static inline int queue_dma_alignment(request_queue_t *q) 840static inline int queue_dma_alignment(struct request_queue *q)
840{ 841{
841 int retval = 511; 842 int retval = 511;
842 843