diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/backing-dev.h | 4 | ||||
| -rw-r--r-- | include/linux/bio.h | 65 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 22 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 18 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 71 | ||||
| -rw-r--r-- | include/linux/crc-t10dif.h | 5 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 | ||||
| -rw-r--r-- | include/linux/nfs_fs.h | 4 | ||||
| -rw-r--r-- | include/linux/t10-pi.h | 22 |
9 files changed, 133 insertions, 80 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index e488e9459a93..5da6012b7a14 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -28,12 +28,10 @@ struct dentry; * Bits in backing_dev_info.state */ enum bdi_state { - BDI_wb_alloc, /* Default embedded wb allocated */ BDI_async_congested, /* The async (write) queue is getting full */ BDI_sync_congested, /* The sync queue is getting full */ BDI_registered, /* bdi_register() was done */ BDI_writeback_running, /* Writeback is in progress */ - BDI_unused, /* Available bits start here */ }; typedef int (congested_fn)(void *, int); @@ -50,7 +48,6 @@ enum bdi_stat_item { struct bdi_writeback { struct backing_dev_info *bdi; /* our parent bdi */ - unsigned int nr; unsigned long last_old_flush; /* last old data flush */ @@ -124,7 +121,6 @@ void bdi_start_background_writeback(struct backing_dev_info *bdi); void bdi_writeback_workfn(struct work_struct *work); int bdi_has_dirty_io(struct backing_dev_info *bdi); void bdi_wakeup_thread_delayed(struct backing_dev_info *bdi); -void bdi_lock_two(struct bdi_writeback *wb1, struct bdi_writeback *wb2); extern spinlock_t bdi_lock; extern struct list_head bdi_list; diff --git a/include/linux/bio.h b/include/linux/bio.h index b39e5000ff58..7347f486ceca 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -292,7 +292,24 @@ static inline unsigned bio_segments(struct bio *bio) */ #define bio_get(bio) atomic_inc(&(bio)->bi_cnt) +enum bip_flags { + BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */ + BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */ + BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */ + BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */ + BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */ +}; + #if defined(CONFIG_BLK_DEV_INTEGRITY) + +static inline struct bio_integrity_payload *bio_integrity(struct bio *bio) +{ + if (bio->bi_rw & REQ_INTEGRITY) + return bio->bi_integrity; + + return NULL; +} + /* * bio integrity payload */ @@ -301,21 +318,40 @@ struct bio_integrity_payload { struct bvec_iter bip_iter; - /* kill - should just use bip_vec */ - void *bip_buf; /* generated integrity data */ - bio_end_io_t *bip_end_io; /* saved I/O completion fn */ unsigned short bip_slab; /* slab the bip came from */ unsigned short bip_vcnt; /* # of integrity bio_vecs */ unsigned short bip_max_vcnt; /* integrity bio_vec slots */ - unsigned bip_owns_buf:1; /* should free bip_buf */ + unsigned short bip_flags; /* control flags */ struct work_struct bip_work; /* I/O completion */ struct bio_vec *bip_vec; struct bio_vec bip_inline_vecs[0];/* embedded bvec array */ }; + +static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag) +{ + struct bio_integrity_payload *bip = bio_integrity(bio); + + if (bip) + return bip->bip_flags & flag; + + return false; +} + +static inline sector_t bip_get_seed(struct bio_integrity_payload *bip) +{ + return bip->bip_iter.bi_sector; +} + +static inline void bip_set_seed(struct bio_integrity_payload *bip, + sector_t seed) +{ + bip->bip_iter.bi_sector = seed; +} + #endif /* CONFIG_BLK_DEV_INTEGRITY */ extern void bio_trim(struct bio *bio, int offset, int size); @@ -342,6 +378,7 @@ static inline struct bio *bio_next_split(struct bio *bio, int sectors, } extern struct bio_set *bioset_create(unsigned int, unsigned int); +extern struct bio_set *bioset_create_nobvec(unsigned int, unsigned int); extern void bioset_free(struct bio_set *); extern mempool_t *biovec_create_pool(int pool_entries); @@ -353,7 +390,6 @@ extern struct bio *bio_clone_fast(struct bio *, gfp_t, struct bio_set *); extern struct bio *bio_clone_bioset(struct bio *, gfp_t, struct bio_set *bs); extern struct bio_set *fs_bio_set; -unsigned int bio_integrity_tag_size(struct bio *bio); static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs) { @@ -661,14 +697,10 @@ struct biovec_slab { for_each_bio(_bio) \ bip_for_each_vec(_bvl, _bio->bi_integrity, _iter) -#define bio_integrity(bio) (bio->bi_integrity != NULL) - extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int); extern void bio_integrity_free(struct bio *); extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int); -extern int bio_integrity_enabled(struct bio *bio); -extern int bio_integrity_set_tag(struct bio *, void *, unsigned int); -extern int bio_integrity_get_tag(struct bio *, void *, unsigned int); +extern bool bio_integrity_enabled(struct bio *bio); extern int bio_integrity_prep(struct bio *); extern void bio_integrity_endio(struct bio *, int); extern void bio_integrity_advance(struct bio *, unsigned int); @@ -680,14 +712,14 @@ extern void bio_integrity_init(void); #else /* CONFIG_BLK_DEV_INTEGRITY */ -static inline int bio_integrity(struct bio *bio) +static inline void *bio_integrity(struct bio *bio) { - return 0; + return NULL; } -static inline int bio_integrity_enabled(struct bio *bio) +static inline bool bio_integrity_enabled(struct bio *bio) { - return 0; + return false; } static inline int bioset_integrity_create(struct bio_set *bs, int pool_size) @@ -733,6 +765,11 @@ static inline void bio_integrity_init(void) return; } +static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag) +{ + return false; +} + #endif /* CONFIG_BLK_DEV_INTEGRITY */ #endif /* CONFIG_BLOCK */ diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index c13a0c09faea..c9be1589415a 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -4,6 +4,7 @@ #include <linux/blkdev.h> struct blk_mq_tags; +struct blk_flush_queue; struct blk_mq_cpu_notifier { struct list_head list; @@ -34,6 +35,7 @@ struct blk_mq_hw_ctx { struct request_queue *queue; unsigned int queue_num; + struct blk_flush_queue *fq; void *driver_data; @@ -77,8 +79,9 @@ struct blk_mq_tag_set { struct list_head tag_list; }; -typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, struct request *); +typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, struct request *, bool); typedef struct blk_mq_hw_ctx *(map_queue_fn)(struct request_queue *, const int); +typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool); typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int); typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int); typedef int (init_request_fn)(void *, struct request *, unsigned int, @@ -86,6 +89,9 @@ typedef int (init_request_fn)(void *, struct request *, unsigned int, typedef void (exit_request_fn)(void *, struct request *, unsigned int, unsigned int); +typedef void (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *, + bool); + struct blk_mq_ops { /* * Queue request @@ -100,7 +106,7 @@ struct blk_mq_ops { /* * Called on request timeout */ - rq_timed_out_fn *timeout; + timeout_fn *timeout; softirq_done_fn *complete; @@ -115,6 +121,10 @@ struct blk_mq_ops { /* * Called for every command allocated by the block layer to allow * the driver to set up driver specific data. + * + * Tag greater than or equal to queue_depth is for setting up + * flush request. + * * Ditto for exit/teardown. */ init_request_fn *init_request; @@ -160,8 +170,9 @@ struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag); struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index); struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int); -void blk_mq_end_io(struct request *rq, int error); -void __blk_mq_end_io(struct request *rq, int error); +void blk_mq_start_request(struct request *rq); +void blk_mq_end_request(struct request *rq, int error); +void __blk_mq_end_request(struct request *rq, int error); void blk_mq_requeue_request(struct request *rq); void blk_mq_add_to_requeue_list(struct request *rq, bool at_head); @@ -174,7 +185,8 @@ void blk_mq_stop_hw_queues(struct request_queue *q); void blk_mq_start_hw_queues(struct request_queue *q); void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async); void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); -void blk_mq_tag_busy_iter(struct blk_mq_tags *tags, void (*fn)(void *data, unsigned long *), void *data); +void blk_mq_tag_busy_iter(struct blk_mq_hw_ctx *hctx, busy_iter_fn *fn, + void *priv); /* * Driver command data is immediately after the request. So subtract request diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 66c2167f04a9..445d59231bc4 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -78,9 +78,11 @@ struct bio { struct io_context *bi_ioc; struct cgroup_subsys_state *bi_css; #endif + union { #if defined(CONFIG_BLK_DEV_INTEGRITY) - struct bio_integrity_payload *bi_integrity; /* data integrity */ + struct bio_integrity_payload *bi_integrity; /* data integrity */ #endif + }; unsigned short bi_vcnt; /* how many bio_vec's */ @@ -118,10 +120,8 @@ struct bio { #define BIO_USER_MAPPED 6 /* contains user pages */ #define BIO_EOPNOTSUPP 7 /* not supported */ #define BIO_NULL_MAPPED 8 /* contains invalid user pages */ -#define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */ -#define BIO_QUIET 10 /* Make BIO Quiet */ -#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */ -#define BIO_SNAP_STABLE 12 /* bio data must be snapshotted during write */ +#define BIO_QUIET 9 /* Make BIO Quiet */ +#define BIO_SNAP_STABLE 10 /* bio data must be snapshotted during write */ /* * Flags starting here get preserved by bio_reset() - this includes @@ -162,6 +162,7 @@ enum rq_flag_bits { __REQ_WRITE_SAME, /* write same block many times */ __REQ_NOIDLE, /* don't anticipate more IO after this one */ + __REQ_INTEGRITY, /* I/O includes block integrity payload */ __REQ_FUA, /* forced unit access */ __REQ_FLUSH, /* request for cache flush */ @@ -186,9 +187,7 @@ enum rq_flag_bits { __REQ_FLUSH_SEQ, /* request for flush sequence */ __REQ_IO_STAT, /* account I/O stat */ __REQ_MIXED_MERGE, /* merge of different types, fail separately */ - __REQ_KERNEL, /* direct IO to kernel pages */ __REQ_PM, /* runtime pm request */ - __REQ_END, /* last of chain of requests */ __REQ_HASHED, /* on IO scheduler merge hash */ __REQ_MQ_INFLIGHT, /* track inflight for MQ */ __REQ_NR_BITS, /* stops here */ @@ -204,13 +203,14 @@ enum rq_flag_bits { #define REQ_DISCARD (1ULL << __REQ_DISCARD) #define REQ_WRITE_SAME (1ULL << __REQ_WRITE_SAME) #define REQ_NOIDLE (1ULL << __REQ_NOIDLE) +#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) #define REQ_COMMON_MASK \ (REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | \ REQ_DISCARD | REQ_WRITE_SAME | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | \ - REQ_SECURE) + REQ_SECURE | REQ_INTEGRITY) #define REQ_CLONE_MASK REQ_COMMON_MASK #define BIO_NO_ADVANCE_ITER_MASK (REQ_DISCARD|REQ_WRITE_SAME) @@ -240,9 +240,7 @@ enum rq_flag_bits { #define REQ_IO_STAT (1ULL << __REQ_IO_STAT) #define REQ_MIXED_MERGE (1ULL << __REQ_MIXED_MERGE) #define REQ_SECURE (1ULL << __REQ_SECURE) -#define REQ_KERNEL (1ULL << __REQ_KERNEL) #define REQ_PM (1ULL << __REQ_PM) -#define REQ_END (1ULL << __REQ_END) #define REQ_HASHED (1ULL << __REQ_HASHED) #define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 87be398166d3..0207a78a8d82 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -36,6 +36,7 @@ struct request; struct sg_io_hdr; struct bsg_job; struct blkcg_gq; +struct blk_flush_queue; #define BLKDEV_MIN_RQ 4 #define BLKDEV_MAX_RQ 128 /* Default maximum */ @@ -455,14 +456,7 @@ struct request_queue { */ 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; - struct list_head flush_queue[2]; - struct list_head flush_data_in_flight; - struct request *flush_rq; - spinlock_t mq_flush_lock; + struct blk_flush_queue *fq; struct list_head requeue_list; spinlock_t requeue_lock; @@ -865,7 +859,7 @@ extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *, static inline struct request_queue *bdev_get_queue(struct block_device *bdev) { - return bdev->bd_disk->queue; + return bdev->bd_disk->queue; /* this is never NULL */ } /* @@ -1285,10 +1279,9 @@ static inline int queue_alignment_offset(struct request_queue *q) static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector) { unsigned int granularity = max(lim->physical_block_size, lim->io_min); - unsigned int alignment = (sector << 9) & (granularity - 1); + unsigned int alignment = sector_div(sector, granularity >> 9) << 9; - return (granularity + lim->alignment_offset - alignment) - & (granularity - 1); + return (granularity + lim->alignment_offset - alignment) % granularity; } static inline int bdev_alignment_offset(struct block_device *bdev) @@ -1464,32 +1457,31 @@ static inline uint64_t rq_io_start_time_ns(struct request *req) #if defined(CONFIG_BLK_DEV_INTEGRITY) -#define INTEGRITY_FLAG_READ 2 /* verify data integrity on read */ -#define INTEGRITY_FLAG_WRITE 4 /* generate data integrity on write */ +enum blk_integrity_flags { + BLK_INTEGRITY_VERIFY = 1 << 0, + BLK_INTEGRITY_GENERATE = 1 << 1, + BLK_INTEGRITY_DEVICE_CAPABLE = 1 << 2, + BLK_INTEGRITY_IP_CHECKSUM = 1 << 3, +}; -struct blk_integrity_exchg { +struct blk_integrity_iter { void *prot_buf; void *data_buf; - sector_t sector; + sector_t seed; unsigned int data_size; - unsigned short sector_size; + unsigned short interval; const char *disk_name; }; -typedef void (integrity_gen_fn) (struct blk_integrity_exchg *); -typedef int (integrity_vrfy_fn) (struct blk_integrity_exchg *); -typedef void (integrity_set_tag_fn) (void *, void *, unsigned int); -typedef void (integrity_get_tag_fn) (void *, void *, unsigned int); +typedef int (integrity_processing_fn) (struct blk_integrity_iter *); struct blk_integrity { - integrity_gen_fn *generate_fn; - integrity_vrfy_fn *verify_fn; - integrity_set_tag_fn *set_tag_fn; - integrity_get_tag_fn *get_tag_fn; + integrity_processing_fn *generate_fn; + integrity_processing_fn *verify_fn; unsigned short flags; unsigned short tuple_size; - unsigned short sector_size; + unsigned short interval; unsigned short tag_size; const char *name; @@ -1504,10 +1496,10 @@ extern int blk_integrity_compare(struct gendisk *, struct gendisk *); extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *, struct scatterlist *); extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); -extern int blk_integrity_merge_rq(struct request_queue *, struct request *, - struct request *); -extern int blk_integrity_merge_bio(struct request_queue *, struct request *, - struct bio *); +extern bool blk_integrity_merge_rq(struct request_queue *, struct request *, + struct request *); +extern bool blk_integrity_merge_bio(struct request_queue *, struct request *, + struct bio *); static inline struct blk_integrity *bdev_get_integrity(struct block_device *bdev) @@ -1520,12 +1512,9 @@ static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk) return disk->integrity; } -static inline int blk_integrity_rq(struct request *rq) +static inline bool blk_integrity_rq(struct request *rq) { - if (rq->bio == NULL) - return 0; - - return bio_integrity(rq->bio); + return rq->cmd_flags & REQ_INTEGRITY; } static inline void blk_queue_max_integrity_segments(struct request_queue *q, @@ -1590,15 +1579,15 @@ static inline unsigned short queue_max_integrity_segments(struct request_queue * { return 0; } -static inline int blk_integrity_merge_rq(struct request_queue *rq, - struct request *r1, - struct request *r2) +static inline bool 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) +static inline bool blk_integrity_merge_bio(struct request_queue *rq, + struct request *r, + struct bio *b) { return 0; } diff --git a/include/linux/crc-t10dif.h b/include/linux/crc-t10dif.h index b3cb71f0d3b0..cf53d0773ce3 100644 --- a/include/linux/crc-t10dif.h +++ b/include/linux/crc-t10dif.h @@ -6,7 +6,8 @@ #define CRC_T10DIF_DIGEST_SIZE 2 #define CRC_T10DIF_BLOCK_SIZE 1 -__u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len); -__u16 crc_t10dif(unsigned char const *, size_t); +extern __u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, + size_t len); +extern __u16 crc_t10dif(unsigned char const *, size_t); #endif diff --git a/include/linux/fs.h b/include/linux/fs.h index ab4f1a10da20..a957d4366c24 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -192,8 +192,6 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset, #define READ 0 #define WRITE RW_MASK #define READA RWA_MASK -#define KERNEL_READ (READ|REQ_KERNEL) -#define KERNEL_WRITE (WRITE|REQ_KERNEL) #define READ_SYNC (READ | REQ_SYNC) #define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE) diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 28d649054d5f..c72d1ad41ad4 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -448,10 +448,10 @@ static inline struct rpc_cred *nfs_file_cred(struct file *file) extern ssize_t nfs_direct_IO(int, struct kiocb *, struct iov_iter *, loff_t); extern ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter, - loff_t pos, bool uio); + loff_t pos); extern ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, - loff_t pos, bool uio); + loff_t pos); /* * linux/fs/nfs/dir.c diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h new file mode 100644 index 000000000000..6a8b9942632d --- /dev/null +++ b/include/linux/t10-pi.h @@ -0,0 +1,22 @@ +#ifndef _LINUX_T10_PI_H +#define _LINUX_T10_PI_H + +#include <linux/types.h> +#include <linux/blkdev.h> + +/* + * T10 Protection Information tuple. + */ +struct t10_pi_tuple { + __be16 guard_tag; /* Checksum */ + __be16 app_tag; /* Opaque storage */ + __be32 ref_tag; /* Target LBA or indirect LBA */ +}; + + +extern struct blk_integrity t10_pi_type1_crc; +extern struct blk_integrity t10_pi_type1_ip; +extern struct blk_integrity t10_pi_type3_crc; +extern struct blk_integrity t10_pi_type3_ip; + +#endif |