aboutsummaryrefslogtreecommitdiff
path: root/include/linux/blkdev.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h104
1 files changed, 87 insertions, 17 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 94acd8172b5..6c6a1f00806 100644
--- 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;
@@ -311,6 +315,12 @@ 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
*/
gfp_t bounce_gfp;
@@ -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);
@@ -675,6 +690,9 @@ extern int blk_insert_cloned_request(struct request_queue *q,
struct request *rq);
extern void blk_delay_queue(struct request_queue *, unsigned long);
extern void blk_recount_segments(struct request_queue *, struct bio *);
+extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int);
+extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t,
+ unsigned int, void __user *);
extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
unsigned int, void __user *);
extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
@@ -826,6 +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,
@@ -856,7 +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 *);
@@ -1279,19 +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 */