blockdev: convert some macros to static inlines

[karo-tx-linux.git] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c7a6d3b5bc7bb010051c887e5e0c64fc7adca113..5cfb9b22627f1ed61328ed058887b3bebb34d86e 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -111,10 +111,14 @@ struct request {
         * Three pointers are available for the IO schedulers, if they need
         * more they have to dynamically allocate it.  Flush requests are
         * never put on the IO scheduler. So let the flush fields share
-        * space with the three elevator_private pointers.
+        * space with the elevator data.
         */
        union {
-               void *elevator_private[3];
+               struct {
+                       struct io_cq            *icq;
+                       void                    *priv[2];
+               } elv;
+
                struct {
                        unsigned int            seq;
                        struct list_head        list;
@@ -310,6 +314,12 @@ struct request_queue {
         */
        unsigned long           queue_flags;
 
+       /*
+        * ida allocated id for this queue.  Used to index queues from
+        * ioctx.
+        */
+       int                     id;
+
        /*
         * queue needs bounce pages for pages above this limit
         */
@@ -351,6 +361,8 @@ struct request_queue {
        struct timer_list       timeout;
        struct list_head        timeout_list;
 
+       struct list_head        icq_list;
+
        struct queue_limits     limits;
 
        /*
@@ -387,6 +399,9 @@ struct request_queue {
        /* Throttle data */
        struct throtl_data *td;
 #endif
+#ifdef CONFIG_LOCKDEP
+       int                     ioc_release_depth;
+#endif
 };
 
 #define QUEUE_FLAG_QUEUED      1       /* uses generic tag queueing */
@@ -481,6 +496,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
 
 #define blk_queue_tagged(q)    test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
 #define blk_queue_stopped(q)   test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
+#define blk_queue_dead(q)      test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags)
 #define blk_queue_nomerges(q)  test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
 #define blk_queue_noxmerges(q) \
        test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags)
@@ -660,7 +676,6 @@ extern void __blk_put_request(struct request_queue *, struct request *);
 extern struct request *blk_get_request(struct request_queue *, int, gfp_t);
 extern struct request *blk_make_request(struct request_queue *, struct bio *,
                                        gfp_t);
-extern void blk_insert_request(struct request_queue *, struct request *, int, void *);
 extern void blk_requeue_request(struct request_queue *, struct request *);
 extern void blk_add_request_payload(struct request *rq, struct page *page,
                unsigned int len);
@@ -829,6 +844,7 @@ extern void blk_queue_io_min(struct request_queue *q, unsigned int min);
 extern void blk_limits_io_opt(struct queue_limits *limits, unsigned int opt);
 extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt);
 extern void blk_set_default_limits(struct queue_limits *lim);
+extern void blk_set_stacking_limits(struct queue_limits *lim);
 extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
                            sector_t offset);
 extern int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev,
@@ -859,7 +875,7 @@ extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatte
 extern void blk_dump_rq_flags(struct request *, char *);
 extern long nr_blockdev_pages(void);
 
-int blk_get_queue(struct request_queue *);
+bool __must_check blk_get_queue(struct request_queue *);
 struct request_queue *blk_alloc_queue(gfp_t);
 struct request_queue *blk_alloc_queue_node(gfp_t, int);
 extern void blk_put_queue(struct request_queue *);
@@ -1282,19 +1298,70 @@ queue_max_integrity_segments(struct request_queue *q)
 
 #else /* CONFIG_BLK_DEV_INTEGRITY */
 
-#define blk_integrity_rq(rq)                   (0)
-#define blk_rq_count_integrity_sg(a, b)                (0)
-#define blk_rq_map_integrity_sg(a, b, c)       (0)
-#define bdev_get_integrity(a)                  (0)
-#define blk_get_integrity(a)                   (0)
-#define blk_integrity_compare(a, b)            (0)
-#define blk_integrity_register(a, b)           (0)
-#define blk_integrity_unregister(a)            do { } while (0)
-#define blk_queue_max_integrity_segments(a, b) do { } while (0)
-#define queue_max_integrity_segments(a)                (0)
-#define blk_integrity_merge_rq(a, b, c)                (0)
-#define blk_integrity_merge_bio(a, b, c)       (0)
-#define blk_integrity_is_initialized(a)                (0)
+struct bio;
+struct block_device;
+struct gendisk;
+struct blk_integrity;
+
+static inline int blk_integrity_rq(struct request *rq)
+{
+       return 0;
+}
+static inline int blk_rq_count_integrity_sg(struct request_queue *q,
+                                           struct bio *b)
+{
+       return 0;
+}
+static inline int blk_rq_map_integrity_sg(struct request_queue *q,
+                                         struct bio *b,
+                                         struct scatterlist *s)
+{
+       return 0;
+}
+static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
+{
+       return 0;
+}
+static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
+{
+       return NULL;
+}
+static inline int blk_integrity_compare(struct gendisk *a, struct gendisk *b)
+{
+       return 0;
+}
+static inline int blk_integrity_register(struct gendisk *d,
+                                        struct blk_integrity *b)
+{
+       return 0;
+}
+static inline void blk_integrity_unregister(struct gendisk *d)
+{
+}
+static inline void blk_queue_max_integrity_segments(struct request_queue *q,
+                                                   unsigned int segs)
+{
+}
+static inline unsigned short queue_max_integrity_segments(struct request_queue *q)
+{
+       return 0;
+}
+static inline int blk_integrity_merge_rq(struct request_queue *rq,
+                                        struct request *r1,
+                                        struct request *r2)
+{
+       return 0;
+}
+static inline int blk_integrity_merge_bio(struct request_queue *rq,
+                                         struct request *r,
+                                         struct bio *b)
+{
+       return 0;
+}
+static inline bool blk_integrity_is_initialized(struct gendisk *g)
+{
+       return 0;
+}
 
 #endif /* CONFIG_BLK_DEV_INTEGRITY */