diff options
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index ce547a25e8ae..810a8bee8f85 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -67,8 +67,12 @@ #define bio_multiple_segments(bio) \ ((bio)->bi_iter.bi_size != bio_iovec(bio).bv_len) -#define bio_sectors(bio) ((bio)->bi_iter.bi_size >> 9) -#define bio_end_sector(bio) ((bio)->bi_iter.bi_sector + bio_sectors((bio))) + +#define bvec_iter_sectors(iter) ((iter).bi_size >> 9) +#define bvec_iter_end_sector(iter) ((iter).bi_sector + bvec_iter_sectors((iter))) + +#define bio_sectors(bio) bvec_iter_sectors((bio)->bi_iter) +#define bio_end_sector(bio) bvec_iter_end_sector((bio)->bi_iter) /* * Return the data direction, READ or WRITE. @@ -406,13 +410,13 @@ static inline struct bio *bio_next_split(struct bio *bio, int sectors, return bio_split(bio, sectors, gfp, bs); } -extern struct bio_set *bioset_create(unsigned int, unsigned int, int flags); enum { BIOSET_NEED_BVECS = BIT(0), BIOSET_NEED_RESCUER = BIT(1), }; -extern void bioset_free(struct bio_set *); -extern mempool_t *biovec_create_pool(int pool_entries); +extern int bioset_init(struct bio_set *, unsigned int, unsigned int, int flags); +extern void bioset_exit(struct bio_set *); +extern int biovec_init_pool(mempool_t *pool, int pool_entries); extern struct bio *bio_alloc_bioset(gfp_t, unsigned int, struct bio_set *); extern void bio_put(struct bio *); @@ -421,11 +425,11 @@ extern void __bio_clone_fast(struct bio *, struct bio *); 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; +extern struct bio_set fs_bio_set; static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs) { - return bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set); + return bio_alloc_bioset(gfp_mask, nr_iovecs, &fs_bio_set); } static inline struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned int nr_iovecs) @@ -499,7 +503,10 @@ static inline void bio_flush_dcache_pages(struct bio *bi) } #endif +extern void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter, + struct bio *src, struct bvec_iter *src_iter); extern void bio_copy_data(struct bio *dst, struct bio *src); +extern void bio_list_copy_data(struct bio *dst, struct bio *src); extern void bio_free_pages(struct bio *bio); extern struct bio *bio_copy_user_iov(struct request_queue *, @@ -507,7 +514,13 @@ extern struct bio *bio_copy_user_iov(struct request_queue *, struct iov_iter *, gfp_t); extern int bio_uncopy_user(struct bio *); -void zero_fill_bio(struct bio *bio); +void zero_fill_bio_iter(struct bio *bio, struct bvec_iter iter); + +static inline void zero_fill_bio(struct bio *bio) +{ + zero_fill_bio_iter(bio, bio->bi_iter); +} + extern struct bio_vec *bvec_alloc(gfp_t, int, unsigned long *, mempool_t *); extern void bvec_free(mempool_t *, struct bio_vec *, unsigned int); extern unsigned int bvec_nr_vecs(unsigned short idx); @@ -722,11 +735,11 @@ struct bio_set { struct kmem_cache *bio_slab; unsigned int front_pad; - mempool_t *bio_pool; - mempool_t *bvec_pool; + mempool_t bio_pool; + mempool_t bvec_pool; #if defined(CONFIG_BLK_DEV_INTEGRITY) - mempool_t *bio_integrity_pool; - mempool_t *bvec_integrity_pool; + mempool_t bio_integrity_pool; + mempool_t bvec_integrity_pool; #endif /* @@ -745,6 +758,11 @@ struct biovec_slab { struct kmem_cache *slab; }; +static inline bool bioset_initialized(struct bio_set *bs) +{ + return bs->bio_slab != NULL; +} + /* * a small number of entries is fine, not going to be performance critical. * basically we just need to survive |