diff options
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 60830a6a5939..ad2d57908c1c 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -11,6 +11,7 @@ #include <linux/uio.h> #define BIO_MAX_VECS 256U +#define BIO_MAX_INLINE_VECS UIO_MAXIOV struct queue_limits; @@ -19,9 +20,6 @@ static inline unsigned int bio_max_segs(unsigned int nr_segs) return min(nr_segs, BIO_MAX_VECS); } -#define bio_prio(bio) (bio)->bi_ioprio -#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio) - #define bio_iter_iovec(bio, iter) \ bvec_iter_bvec((bio)->bi_io_vec, (iter)) @@ -293,7 +291,7 @@ static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio, fi->folio = page_folio(bvec->bv_page); fi->offset = bvec->bv_offset + - PAGE_SIZE * (bvec->bv_page - &fi->folio->page); + PAGE_SIZE * folio_page_idx(fi->folio, bvec->bv_page); fi->_seg_count = bvec->bv_len; fi->length = min(folio_size(fi->folio) - fi->offset, fi->_seg_count); fi->_next = folio_next(fi->folio); @@ -324,8 +322,10 @@ static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio) void bio_trim(struct bio *bio, sector_t offset, sector_t size); extern struct bio *bio_split(struct bio *bio, int sectors, gfp_t gfp, struct bio_set *bs); -int bio_split_rw_at(struct bio *bio, const struct queue_limits *lim, - unsigned *segs, unsigned max_bytes); +int bio_split_io_at(struct bio *bio, const struct queue_limits *lim, + unsigned *segs, unsigned max_bytes, unsigned len_align); +u8 bio_seg_gap(struct request_queue *q, struct bio *prev, struct bio *next, + u8 gaps_bit); /** * bio_next_split - get next @sectors from a bio, splitting if necessary @@ -405,9 +405,13 @@ static inline int bio_iov_vecs_to_alloc(struct iov_iter *iter, int max_segs) struct request_queue; -extern int submit_bio_wait(struct bio *bio); void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table, unsigned short max_vecs, blk_opf_t opf); +static inline void bio_init_inline(struct bio *bio, struct block_device *bdev, + unsigned short max_vecs, blk_opf_t opf) +{ + bio_init(bio, bdev, bio_inline_vecs(bio), max_vecs, opf); +} extern void bio_uninit(struct bio *); void bio_reset(struct bio *bio, struct block_device *bdev, blk_opf_t opf); void bio_chain(struct bio *, struct bio *); @@ -416,14 +420,38 @@ int __must_check bio_add_page(struct bio *bio, struct page *page, unsigned len, unsigned off); bool __must_check bio_add_folio(struct bio *bio, struct folio *folio, size_t len, size_t off); -extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *, - unsigned int, unsigned int); void __bio_add_page(struct bio *bio, struct page *page, unsigned int len, unsigned int off); void bio_add_folio_nofail(struct bio *bio, struct folio *folio, size_t len, size_t off); -int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter); -void bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter); +void bio_add_virt_nofail(struct bio *bio, void *vaddr, unsigned len); + +/** + * bio_add_max_vecs - number of bio_vecs needed to add data to a bio + * @kaddr: kernel virtual address to add + * @len: length in bytes to add + * + * Calculate how many bio_vecs need to be allocated to add the kernel virtual + * address range in [@kaddr:@len] in the worse case. + */ +static inline unsigned int bio_add_max_vecs(void *kaddr, unsigned int len) +{ + if (is_vmalloc_addr(kaddr)) + return DIV_ROUND_UP(offset_in_page(kaddr) + len, PAGE_SIZE); + return 1; +} + +unsigned int bio_add_vmalloc_chunk(struct bio *bio, void *vaddr, unsigned len); +bool bio_add_vmalloc(struct bio *bio, void *vaddr, unsigned int len); + +int submit_bio_wait(struct bio *bio); +int bdev_rw_virt(struct block_device *bdev, sector_t sector, void *data, + size_t len, enum req_op op); + +int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter, + unsigned len_align_mask); + +void bio_iov_bvec_set(struct bio *bio, const struct iov_iter *iter); void __bio_release_pages(struct bio *bio, bool mark_dirty); extern void bio_set_pages_dirty(struct bio *bio); extern void bio_check_pages_dirty(struct bio *bio); @@ -630,10 +658,6 @@ struct bio_set { mempool_t bio_pool; mempool_t bvec_pool; -#if defined(CONFIG_BLK_DEV_INTEGRITY) - mempool_t bio_integrity_pool; - mempool_t bvec_integrity_pool; -#endif unsigned int back_pad; /* |