diff options
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 149 |
1 files changed, 92 insertions, 57 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1ef375dafb1c..053ea4b51988 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -194,7 +194,11 @@ struct request { struct gendisk *rq_disk; struct hd_struct *part; - /* Time that I/O was submitted to the kernel. */ +#ifdef CONFIG_BLK_RQ_ALLOC_TIME + /* Time that the first bio started allocating this request. */ + u64 alloc_time_ns; +#endif + /* Time that this request was allocated for this IO. */ u64 start_time_ns; /* Time that I/O was submitted to the device. */ u64 io_start_time_ns; @@ -202,9 +206,12 @@ struct request { #ifdef CONFIG_BLK_WBT unsigned short wbt_flags; #endif -#ifdef CONFIG_BLK_DEV_THROTTLING_LOW - unsigned short throtl_size; -#endif + /* + * rq sectors used for blk stats. It has the same value + * with blk_rq_sectors(rq), except that it never be zeroed + * by completion. + */ + unsigned short stats_sectors; /* * Number of scatter-gather DMA addr+len pairs after @@ -321,6 +328,7 @@ struct queue_limits { unsigned int max_sectors; unsigned int max_segment_size; unsigned int physical_block_size; + unsigned int logical_block_size; unsigned int alignment_offset; unsigned int io_min; unsigned int io_opt; @@ -331,7 +339,6 @@ struct queue_limits { unsigned int discard_granularity; unsigned int discard_alignment; - unsigned short logical_block_size; unsigned short max_segments; unsigned short max_integrity_segments; unsigned short max_discard_segments; @@ -342,34 +349,28 @@ struct queue_limits { enum blk_zoned_model zoned; }; +typedef int (*report_zones_cb)(struct blk_zone *zone, unsigned int idx, + void *data); + #ifdef CONFIG_BLK_DEV_ZONED -/* - * Maximum number of zones to report with a single report zones command. - */ -#define BLK_ZONED_REPORT_MAX_ZONES 8192U - -extern unsigned int blkdev_nr_zones(struct block_device *bdev); -extern int blkdev_report_zones(struct block_device *bdev, - sector_t sector, struct blk_zone *zones, - unsigned int *nr_zones); -extern int blkdev_reset_zones(struct block_device *bdev, sector_t sectors, - sector_t nr_sectors, gfp_t gfp_mask); +#define BLK_ALL_ZONES ((unsigned int)-1) +int blkdev_report_zones(struct block_device *bdev, sector_t sector, + unsigned int nr_zones, report_zones_cb cb, void *data); +unsigned int blkdev_nr_zones(struct gendisk *disk); +extern int blkdev_zone_mgmt(struct block_device *bdev, enum req_opf op, + sector_t sectors, sector_t nr_sectors, + gfp_t gfp_mask); extern int blk_revalidate_disk_zones(struct gendisk *disk); extern int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg); -extern int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode, - unsigned int cmd, unsigned long arg); +extern int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg); #else /* CONFIG_BLK_DEV_ZONED */ -static inline unsigned int blkdev_nr_zones(struct block_device *bdev) -{ - return 0; -} - -static inline int blk_revalidate_disk_zones(struct gendisk *disk) +static inline unsigned int blkdev_nr_zones(struct gendisk *disk) { return 0; } @@ -381,9 +382,9 @@ static inline int blkdev_report_zones_ioctl(struct block_device *bdev, return -ENOTTY; } -static inline int blkdev_reset_zones_ioctl(struct block_device *bdev, - fmode_t mode, unsigned int cmd, - unsigned long arg) +static inline int blkdev_zone_mgmt_ioctl(struct block_device *bdev, + fmode_t mode, unsigned int cmd, + unsigned long arg) { return -ENOTTY; } @@ -391,10 +392,6 @@ static inline int blkdev_reset_zones_ioctl(struct block_device *bdev, #endif /* CONFIG_BLK_DEV_ZONED */ struct request_queue { - /* - * Together with queue_head for cacheline sharing - */ - struct list_head queue_head; struct request *last_merge; struct elevator_queue *elevator; @@ -408,7 +405,6 @@ struct request_queue { /* sw queues */ struct blk_mq_ctx __percpu *queue_ctx; - unsigned int nr_queues; unsigned int queue_depth; @@ -496,13 +492,15 @@ struct request_queue { struct queue_limits limits; + unsigned int required_elevator_features; + #ifdef CONFIG_BLK_DEV_ZONED /* * Zoned block device information for request dispatch control. * nr_zones is the total number of zones of the device. This is always - * 0 for regular block devices. seq_zones_bitmap is a bitmap of nr_zones - * bits which indicates if a zone is conventional (bit clear) or - * sequential (bit set). seq_zones_wlock is a bitmap of nr_zones + * 0 for regular block devices. conv_zones_bitmap is a bitmap of nr_zones + * bits which indicates if a zone is conventional (bit set) or + * sequential (bit clear). seq_zones_wlock is a bitmap of nr_zones * bits which indicates if a zone is write locked, that is, if a write * request targeting the zone was dispatched. All three fields are * initialized by the low level device driver (e.g. scsi/sd.c). @@ -515,7 +513,7 @@ struct request_queue { * blk_mq_unfreeze_queue(). */ unsigned int nr_zones; - unsigned long *seq_zones_bitmap; + unsigned long *conv_zones_bitmap; unsigned long *seq_zones_wlock; #endif /* CONFIG_BLK_DEV_ZONED */ @@ -539,6 +537,7 @@ struct request_queue { struct delayed_work requeue_work; struct mutex sysfs_lock; + struct mutex sysfs_dir_lock; /* * for reusing dead hctx instance in case of updating @@ -611,6 +610,8 @@ struct request_queue { #define QUEUE_FLAG_SCSI_PASSTHROUGH 23 /* queue supports SCSI commands */ #define QUEUE_FLAG_QUIESCED 24 /* queue has been quiesced */ #define QUEUE_FLAG_PCI_P2PDMA 25 /* device supports PCI p2p requests */ +#define QUEUE_FLAG_ZONE_RESETALL 26 /* supports Zone Reset All */ +#define QUEUE_FLAG_RQ_ALLOC_TIME 27 /* record rq->alloc_time_ns */ #define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_SAME_COMP)) @@ -630,6 +631,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) +#define blk_queue_zone_resetall(q) \ + test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags) #define blk_queue_secure_erase(q) \ (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags)) #define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags) @@ -637,6 +640,12 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); test_bit(QUEUE_FLAG_SCSI_PASSTHROUGH, &(q)->queue_flags) #define blk_queue_pci_p2pdma(q) \ test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags) +#ifdef CONFIG_BLK_RQ_ALLOC_TIME +#define blk_queue_rq_alloc_time(q) \ + test_bit(QUEUE_FLAG_RQ_ALLOC_TIME, &(q)->queue_flags) +#else +#define blk_queue_rq_alloc_time(q) false +#endif #define blk_noretry_request(rq) \ ((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \ @@ -644,6 +653,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_quiesced(q) test_bit(QUEUE_FLAG_QUIESCED, &(q)->queue_flags) #define blk_queue_pm_only(q) atomic_read(&(q)->pm_only) #define blk_queue_fua(q) test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags) +#define blk_queue_registered(q) test_bit(QUEUE_FLAG_REGISTERED, &(q)->queue_flags) extern void blk_set_pm_only(struct request_queue *q); extern void blk_clear_pm_only(struct request_queue *q); @@ -708,9 +718,11 @@ static inline unsigned int blk_queue_zone_no(struct request_queue *q, static inline bool blk_queue_zone_is_seq(struct request_queue *q, sector_t sector) { - if (!blk_queue_is_zoned(q) || !q->seq_zones_bitmap) + if (!blk_queue_is_zoned(q)) return false; - return test_bit(blk_queue_zone_no(q, sector), q->seq_zones_bitmap); + if (!q->conv_zones_bitmap) + return true; + return !test_bit(blk_queue_zone_no(q, sector), q->conv_zones_bitmap); } #else /* CONFIG_BLK_DEV_ZONED */ static inline unsigned int blk_queue_nr_zones(struct request_queue *q) @@ -853,6 +865,8 @@ 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, struct scsi_ioctl_command __user *); +extern int get_sg_io_hdr(struct sg_io_hdr *hdr, const void __user *argp); +extern int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp); extern int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags); extern void blk_queue_exit(struct request_queue *q); @@ -903,6 +917,7 @@ static inline struct request_queue *bdev_get_queue(struct block_device *bdev) * blk_rq_err_bytes() : bytes left till the next error boundary * blk_rq_sectors() : sectors left in the entire request * blk_rq_cur_sectors() : sectors left in the current segment + * blk_rq_stats_sectors() : sectors of the entire request used for stats */ static inline sector_t blk_rq_pos(const struct request *rq) { @@ -931,6 +946,11 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq) return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT; } +static inline unsigned int blk_rq_stats_sectors(const struct request *rq) +{ + return rq->stats_sectors; +} + #ifdef CONFIG_BLK_DEV_ZONED static inline unsigned int blk_rq_zone_no(struct request *rq) { @@ -1057,7 +1077,7 @@ extern void blk_queue_max_write_same_sectors(struct request_queue *q, unsigned int max_write_same_sectors); extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q, unsigned int max_write_same_sectors); -extern void blk_queue_logical_block_size(struct request_queue *, unsigned short); +extern void blk_queue_logical_block_size(struct request_queue *, unsigned int); extern void blk_queue_physical_block_size(struct request_queue *, unsigned int); extern void blk_queue_alignment_offset(struct request_queue *q, unsigned int alignment); @@ -1085,6 +1105,10 @@ extern void blk_queue_dma_alignment(struct request_queue *, int); extern void blk_queue_update_dma_alignment(struct request_queue *, int); extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua); +extern void blk_queue_required_elevator_features(struct request_queue *q, + unsigned int features); +extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q, + struct device *dev); /* * Number of physical segments as sent to the device. @@ -1232,42 +1256,42 @@ enum blk_default_limits { BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL, }; -static inline unsigned long queue_segment_boundary(struct request_queue *q) +static inline unsigned long queue_segment_boundary(const struct request_queue *q) { return q->limits.seg_boundary_mask; } -static inline unsigned long queue_virt_boundary(struct request_queue *q) +static inline unsigned long queue_virt_boundary(const struct request_queue *q) { return q->limits.virt_boundary_mask; } -static inline unsigned int queue_max_sectors(struct request_queue *q) +static inline unsigned int queue_max_sectors(const struct request_queue *q) { return q->limits.max_sectors; } -static inline unsigned int queue_max_hw_sectors(struct request_queue *q) +static inline unsigned int queue_max_hw_sectors(const struct request_queue *q) { return q->limits.max_hw_sectors; } -static inline unsigned short queue_max_segments(struct request_queue *q) +static inline unsigned short queue_max_segments(const struct request_queue *q) { return q->limits.max_segments; } -static inline unsigned short queue_max_discard_segments(struct request_queue *q) +static inline unsigned short queue_max_discard_segments(const struct request_queue *q) { return q->limits.max_discard_segments; } -static inline unsigned int queue_max_segment_size(struct request_queue *q) +static inline unsigned int queue_max_segment_size(const struct request_queue *q) { return q->limits.max_segment_size; } -static inline unsigned short queue_logical_block_size(struct request_queue *q) +static inline unsigned queue_logical_block_size(const struct request_queue *q) { int retval = 512; @@ -1277,12 +1301,12 @@ static inline unsigned short queue_logical_block_size(struct request_queue *q) return retval; } -static inline unsigned short bdev_logical_block_size(struct block_device *bdev) +static inline unsigned int bdev_logical_block_size(struct block_device *bdev) { return queue_logical_block_size(bdev_get_queue(bdev)); } -static inline unsigned int queue_physical_block_size(struct request_queue *q) +static inline unsigned int queue_physical_block_size(const struct request_queue *q) { return q->limits.physical_block_size; } @@ -1292,7 +1316,7 @@ static inline unsigned int bdev_physical_block_size(struct block_device *bdev) return queue_physical_block_size(bdev_get_queue(bdev)); } -static inline unsigned int queue_io_min(struct request_queue *q) +static inline unsigned int queue_io_min(const struct request_queue *q) { return q->limits.io_min; } @@ -1302,7 +1326,7 @@ static inline int bdev_io_min(struct block_device *bdev) return queue_io_min(bdev_get_queue(bdev)); } -static inline unsigned int queue_io_opt(struct request_queue *q) +static inline unsigned int queue_io_opt(const struct request_queue *q) { return q->limits.io_opt; } @@ -1312,7 +1336,7 @@ static inline int bdev_io_opt(struct block_device *bdev) return queue_io_opt(bdev_get_queue(bdev)); } -static inline int queue_alignment_offset(struct request_queue *q) +static inline int queue_alignment_offset(const struct request_queue *q) { if (q->limits.misaligned) return -1; @@ -1342,7 +1366,7 @@ static inline int bdev_alignment_offset(struct block_device *bdev) return q->limits.alignment_offset; } -static inline int queue_discard_alignment(struct request_queue *q) +static inline int queue_discard_alignment(const struct request_queue *q) { if (q->limits.discard_misaligned) return -1; @@ -1432,7 +1456,7 @@ static inline sector_t bdev_zone_sectors(struct block_device *bdev) return 0; } -static inline int queue_dma_alignment(struct request_queue *q) +static inline int queue_dma_alignment(const struct request_queue *q) { return q ? q->dma_alignment : 511; } @@ -1497,10 +1521,14 @@ struct blk_integrity_iter { }; typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *); +typedef void (integrity_prepare_fn) (struct request *); +typedef void (integrity_complete_fn) (struct request *, unsigned int); struct blk_integrity_profile { integrity_processing_fn *generate_fn; integrity_processing_fn *verify_fn; + integrity_prepare_fn *prepare_fn; + integrity_complete_fn *complete_fn; const char *name; }; @@ -1543,7 +1571,7 @@ static inline void blk_queue_max_integrity_segments(struct request_queue *q, } static inline unsigned short -queue_max_integrity_segments(struct request_queue *q) +queue_max_integrity_segments(const struct request_queue *q) { return q->limits.max_integrity_segments; } @@ -1626,7 +1654,7 @@ 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) +static inline unsigned short queue_max_integrity_segments(const struct request_queue *q) { return 0; } @@ -1678,11 +1706,18 @@ struct block_device_operations { /* this callback is with swap_lock and sometimes page table lock held */ void (*swap_slot_free_notify) (struct block_device *, unsigned long); int (*report_zones)(struct gendisk *, sector_t sector, - struct blk_zone *zones, unsigned int *nr_zones); + unsigned int nr_zones, report_zones_cb cb, void *data); struct module *owner; const struct pr_ops *pr_ops; }; +#ifdef CONFIG_COMPAT +extern int blkdev_compat_ptr_ioctl(struct block_device *, fmode_t, + unsigned int, unsigned long); +#else +#define blkdev_compat_ptr_ioctl NULL +#endif + extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long); extern int bdev_read_page(struct block_device *, sector_t, struct page *); |
