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Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h71
1 files changed, 51 insertions, 20 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 16a902f099ac..ae9091a68480 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -257,7 +257,7 @@ struct queue_limits {
unsigned char misaligned;
unsigned char discard_misaligned;
unsigned char cluster;
- signed char discard_zeroes_data;
+ unsigned char discard_zeroes_data;
};
struct request_queue
@@ -364,6 +364,8 @@ struct request_queue
* for flush operations
*/
unsigned int flush_flags;
+ unsigned int flush_not_queueable:1;
+ unsigned int flush_queue_delayed:1;
unsigned int flush_pending_idx:1;
unsigned int flush_running_idx:1;
unsigned long flush_pending_since;
@@ -388,20 +390,19 @@ struct request_queue
#define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */
#define QUEUE_FLAG_ASYNCFULL 4 /* write queue has been filled */
#define QUEUE_FLAG_DEAD 5 /* queue being torn down */
-#define QUEUE_FLAG_REENTER 6 /* Re-entrancy avoidance */
-#define QUEUE_FLAG_ELVSWITCH 7 /* don't use elevator, just do FIFO */
-#define QUEUE_FLAG_BIDI 8 /* queue supports bidi requests */
-#define QUEUE_FLAG_NOMERGES 9 /* disable merge attempts */
-#define QUEUE_FLAG_SAME_COMP 10 /* force complete on same CPU */
-#define QUEUE_FLAG_FAIL_IO 11 /* fake timeout */
-#define QUEUE_FLAG_STACKABLE 12 /* supports request stacking */
-#define QUEUE_FLAG_NONROT 13 /* non-rotational device (SSD) */
+#define QUEUE_FLAG_ELVSWITCH 6 /* don't use elevator, just do FIFO */
+#define QUEUE_FLAG_BIDI 7 /* queue supports bidi requests */
+#define QUEUE_FLAG_NOMERGES 8 /* disable merge attempts */
+#define QUEUE_FLAG_SAME_COMP 9 /* force complete on same CPU */
+#define QUEUE_FLAG_FAIL_IO 10 /* fake timeout */
+#define QUEUE_FLAG_STACKABLE 11 /* supports request stacking */
+#define QUEUE_FLAG_NONROT 12 /* non-rotational device (SSD) */
#define QUEUE_FLAG_VIRT QUEUE_FLAG_NONROT /* paravirt device */
-#define QUEUE_FLAG_IO_STAT 15 /* do IO stats */
-#define QUEUE_FLAG_DISCARD 16 /* supports DISCARD */
-#define QUEUE_FLAG_NOXMERGES 17 /* No extended merges */
-#define QUEUE_FLAG_ADD_RANDOM 18 /* Contributes to random pool */
-#define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */
+#define QUEUE_FLAG_IO_STAT 13 /* do IO stats */
+#define QUEUE_FLAG_DISCARD 14 /* supports DISCARD */
+#define QUEUE_FLAG_NOXMERGES 15 /* No extended merges */
+#define QUEUE_FLAG_ADD_RANDOM 16 /* Contributes to random pool */
+#define QUEUE_FLAG_SECDISCARD 17 /* supports SECDISCARD */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -697,8 +698,9 @@ extern void blk_start_queue(struct request_queue *q);
extern void blk_stop_queue(struct request_queue *q);
extern void blk_sync_queue(struct request_queue *q);
extern void __blk_stop_queue(struct request_queue *q);
-extern void __blk_run_queue(struct request_queue *q, bool force_kblockd);
+extern void __blk_run_queue(struct request_queue *q);
extern void blk_run_queue(struct request_queue *);
+extern void blk_run_queue_async(struct request_queue *q);
extern int blk_rq_map_user(struct request_queue *, struct request *,
struct rq_map_data *, void __user *, unsigned long,
gfp_t);
@@ -843,6 +845,7 @@ extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern void blk_queue_flush(struct request_queue *q, unsigned int flush);
+extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev);
extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
@@ -857,26 +860,39 @@ extern void blk_put_queue(struct request_queue *);
struct blk_plug {
unsigned long magic;
struct list_head list;
+ struct list_head cb_list;
unsigned int should_sort;
};
+struct blk_plug_cb {
+ struct list_head list;
+ void (*callback)(struct blk_plug_cb *);
+};
extern void blk_start_plug(struct blk_plug *);
extern void blk_finish_plug(struct blk_plug *);
-extern void __blk_flush_plug(struct task_struct *, struct blk_plug *);
+extern void blk_flush_plug_list(struct blk_plug *, bool);
static inline void blk_flush_plug(struct task_struct *tsk)
{
struct blk_plug *plug = tsk->plug;
- if (unlikely(plug))
- __blk_flush_plug(tsk, plug);
+ if (plug)
+ blk_flush_plug_list(plug, false);
+}
+
+static inline void blk_schedule_flush_plug(struct task_struct *tsk)
+{
+ struct blk_plug *plug = tsk->plug;
+
+ if (plug)
+ blk_flush_plug_list(plug, true);
}
static inline bool blk_needs_flush_plug(struct task_struct *tsk)
{
struct blk_plug *plug = tsk->plug;
- return plug && !list_empty(&plug->list);
+ return plug && (!list_empty(&plug->list) || !list_empty(&plug->cb_list));
}
/*
@@ -1053,13 +1069,16 @@ static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector
{
unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1);
+ if (!lim->max_discard_sectors)
+ return 0;
+
return (lim->discard_granularity + lim->discard_alignment - alignment)
& (lim->discard_granularity - 1);
}
static inline unsigned int queue_discard_zeroes_data(struct request_queue *q)
{
- if (q->limits.discard_zeroes_data == 1)
+ if (q->limits.max_discard_sectors && q->limits.discard_zeroes_data == 1)
return 1;
return 0;
@@ -1098,6 +1117,11 @@ static inline unsigned int block_size(struct block_device *bdev)
return bdev->bd_block_size;
}
+static inline bool queue_flush_queueable(struct request_queue *q)
+{
+ return !q->flush_not_queueable;
+}
+
typedef struct {struct page *v;} Sector;
unsigned char *read_dev_sector(struct block_device *, sector_t, Sector *);
@@ -1206,6 +1230,7 @@ struct blk_integrity {
struct kobject kobj;
};
+extern bool blk_integrity_is_initialized(struct gendisk *);
extern int blk_integrity_register(struct gendisk *, struct blk_integrity *);
extern void blk_integrity_unregister(struct gendisk *);
extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
@@ -1262,6 +1287,7 @@ queue_max_integrity_segments(struct request_queue *q)
#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)
#endif /* CONFIG_BLK_DEV_INTEGRITY */
@@ -1312,6 +1338,11 @@ static inline void blk_flush_plug(struct task_struct *task)
{
}
+static inline void blk_schedule_flush_plug(struct task_struct *task)
+{
+}
+
+
static inline bool blk_needs_flush_plug(struct task_struct *tsk)
{
return false;
generated by cgit v1.2.3 (git 2.0.4) at 2025-05-15 01:37:08 +0000