diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bio.h | 6 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 37 | ||||
| -rw-r--r-- | include/linux/elevator.h | 2 |
3 files changed, 20 insertions, 25 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index f37ca8c726ba..d30ec6f30dd7 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -218,12 +218,12 @@ struct bio { #define bio_sectors(bio) ((bio)->bi_size >> 9) #define bio_empty_barrier(bio) (bio_barrier(bio) && !bio_has_data(bio) && !bio_discard(bio)) -static inline unsigned int bio_cur_sectors(struct bio *bio) +static inline unsigned int bio_cur_bytes(struct bio *bio) { if (bio->bi_vcnt) - return bio_iovec(bio)->bv_len >> 9; + return bio_iovec(bio)->bv_len; else /* dataless requests such as discard */ - return bio->bi_size >> 9; + return bio->bi_size; } static inline void *bio_data(struct bio *bio) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 4e5f85598728..ce2bf5efa9ba 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -166,19 +166,8 @@ struct request { enum rq_cmd_type_bits cmd_type; unsigned long atomic_flags; - /* Maintain bio traversal state for part by part I/O submission. - * hard_* are block layer internals, no driver should touch them! - */ - - sector_t sector; /* next sector to submit */ - sector_t hard_sector; /* next sector to complete */ - unsigned long nr_sectors; /* no. of sectors left to submit */ - unsigned long hard_nr_sectors; /* no. of sectors left to complete */ - /* no. of sectors left to submit in the current segment */ - unsigned int current_nr_sectors; - - /* no. of sectors left to complete in the current segment */ - unsigned int hard_cur_sectors; + sector_t sector; /* sector cursor */ + unsigned int data_len; /* total data len, don't access directly */ struct bio *bio; struct bio *biotail; @@ -226,7 +215,6 @@ struct request { unsigned char __cmd[BLK_MAX_CDB]; unsigned char *cmd; - unsigned int data_len; unsigned int extra_len; /* length of alignment and padding */ unsigned int sense_len; unsigned int resid_len; /* residual count */ @@ -840,20 +828,27 @@ extern void blkdev_dequeue_request(struct request *req); */ static inline sector_t blk_rq_pos(const struct request *rq) { - return rq->hard_sector; + return rq->sector; +} + +static inline unsigned int blk_rq_bytes(const struct request *rq) +{ + return rq->data_len; } -extern unsigned int blk_rq_bytes(struct request *rq); -extern unsigned int blk_rq_cur_bytes(struct request *rq); +static inline int blk_rq_cur_bytes(const struct request *rq) +{ + return rq->bio ? bio_cur_bytes(rq->bio) : 0; +} static inline unsigned int blk_rq_sectors(const struct request *rq) { - return rq->hard_nr_sectors; + return blk_rq_bytes(rq) >> 9; } static inline unsigned int blk_rq_cur_sectors(const struct request *rq) { - return rq->hard_cur_sectors; + return blk_rq_cur_bytes(rq) >> 9; } /* @@ -928,7 +923,7 @@ static inline void blk_end_request_all(struct request *rq, int error) */ static inline bool blk_end_request_cur(struct request *rq, int error) { - return blk_end_request(rq, error, rq->hard_cur_sectors << 9); + return blk_end_request(rq, error, blk_rq_cur_bytes(rq)); } /** @@ -981,7 +976,7 @@ static inline void __blk_end_request_all(struct request *rq, int error) */ static inline bool __blk_end_request_cur(struct request *rq, int error) { - return __blk_end_request(rq, error, rq->hard_cur_sectors << 9); + return __blk_end_request(rq, error, blk_rq_cur_bytes(rq)); } extern void blk_complete_request(struct request *); diff --git a/include/linux/elevator.h b/include/linux/elevator.h index c59b769f62b0..4e462878c9ca 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -171,7 +171,7 @@ enum { ELV_MQUEUE_MUST, }; -#define rq_end_sector(rq) ((rq)->sector + (rq)->nr_sectors) +#define rq_end_sector(rq) (blk_rq_pos(rq) + blk_rq_sectors(rq)) #define rb_entry_rq(node) rb_entry((node), struct request, rb_node) /* |