Lines Matching refs:bio
31 struct bio *free_list;
32 struct bio *free_list_irq;
114 return bs->front_pad + sizeof(struct bio) + bs->back_pad; in bs_bio_slab_size()
213 void bio_uninit(struct bio *bio) in bio_uninit() argument
216 if (bio->bi_blkg) { in bio_uninit()
217 blkg_put(bio->bi_blkg); in bio_uninit()
218 bio->bi_blkg = NULL; in bio_uninit()
221 if (bio_integrity(bio)) in bio_uninit()
222 bio_integrity_free(bio); in bio_uninit()
224 bio_crypt_free_ctx(bio); in bio_uninit()
228 static void bio_free(struct bio *bio) in bio_free() argument
230 struct bio_set *bs = bio->bi_pool; in bio_free()
231 void *p = bio; in bio_free()
235 bio_uninit(bio); in bio_free()
236 bvec_free(&bs->bvec_pool, bio->bi_io_vec, bio->bi_max_vecs); in bio_free()
245 void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table, in bio_init() argument
248 bio->bi_next = NULL; in bio_init()
249 bio->bi_bdev = bdev; in bio_init()
250 bio->bi_opf = opf; in bio_init()
251 bio->bi_flags = 0; in bio_init()
252 bio->bi_ioprio = 0; in bio_init()
253 bio->bi_write_hint = 0; in bio_init()
254 bio->bi_status = 0; in bio_init()
255 bio->bi_iter.bi_sector = 0; in bio_init()
256 bio->bi_iter.bi_size = 0; in bio_init()
257 bio->bi_iter.bi_idx = 0; in bio_init()
258 bio->bi_iter.bi_bvec_done = 0; in bio_init()
259 bio->bi_end_io = NULL; in bio_init()
260 bio->bi_private = NULL; in bio_init()
262 bio->bi_blkg = NULL; in bio_init()
263 bio->bi_issue.value = 0; in bio_init()
265 bio_associate_blkg(bio); in bio_init()
267 bio->bi_iocost_cost = 0; in bio_init()
271 bio->bi_crypt_context = NULL; in bio_init()
274 bio->bi_integrity = NULL; in bio_init()
276 bio->bi_vcnt = 0; in bio_init()
278 atomic_set(&bio->__bi_remaining, 1); in bio_init()
279 atomic_set(&bio->__bi_cnt, 1); in bio_init()
280 bio->bi_cookie = BLK_QC_T_NONE; in bio_init()
282 bio->bi_max_vecs = max_vecs; in bio_init()
283 bio->bi_io_vec = table; in bio_init()
284 bio->bi_pool = NULL; in bio_init()
300 void bio_reset(struct bio *bio, struct block_device *bdev, blk_opf_t opf) in bio_reset() argument
302 bio_uninit(bio); in bio_reset()
303 memset(bio, 0, BIO_RESET_BYTES); in bio_reset()
304 atomic_set(&bio->__bi_remaining, 1); in bio_reset()
305 bio->bi_bdev = bdev; in bio_reset()
306 if (bio->bi_bdev) in bio_reset()
307 bio_associate_blkg(bio); in bio_reset()
308 bio->bi_opf = opf; in bio_reset()
312 static struct bio *__bio_chain_endio(struct bio *bio) in __bio_chain_endio() argument
314 struct bio *parent = bio->bi_private; in __bio_chain_endio()
316 if (bio->bi_status && !parent->bi_status) in __bio_chain_endio()
317 parent->bi_status = bio->bi_status; in __bio_chain_endio()
318 bio_put(bio); in __bio_chain_endio()
322 static void bio_chain_endio(struct bio *bio) in bio_chain_endio() argument
324 bio_endio(__bio_chain_endio(bio)); in bio_chain_endio()
338 void bio_chain(struct bio *bio, struct bio *parent) in bio_chain() argument
340 BUG_ON(bio->bi_private || bio->bi_end_io); in bio_chain()
342 bio->bi_private = parent; in bio_chain()
343 bio->bi_end_io = bio_chain_endio; in bio_chain()
357 struct bio *bio_chain_and_submit(struct bio *prev, struct bio *new) in bio_chain_and_submit()
366 struct bio *blk_next_bio(struct bio *bio, struct block_device *bdev, in blk_next_bio() argument
369 return bio_chain_and_submit(bio, bio_alloc(bdev, nr_pages, opf, gfp)); in blk_next_bio()
376 struct bio *bio; in bio_alloc_rescue() local
380 bio = bio_list_pop(&bs->rescue_list); in bio_alloc_rescue()
383 if (!bio) in bio_alloc_rescue()
386 submit_bio_noacct(bio); in bio_alloc_rescue()
393 struct bio *bio; in punt_bios_to_rescuer() local
411 while ((bio = bio_list_pop(¤t->bio_list[0]))) in punt_bios_to_rescuer()
412 bio_list_add(bio->bi_pool == bs ? &punt : &nopunt, bio); in punt_bios_to_rescuer()
416 while ((bio = bio_list_pop(¤t->bio_list[1]))) in punt_bios_to_rescuer()
417 bio_list_add(bio->bi_pool == bs ? &punt : &nopunt, bio); in punt_bios_to_rescuer()
443 static struct bio *bio_alloc_percpu_cache(struct block_device *bdev, in bio_alloc_percpu_cache()
448 struct bio *bio; in bio_alloc_percpu_cache() local
459 bio = cache->free_list; in bio_alloc_percpu_cache()
460 cache->free_list = bio->bi_next; in bio_alloc_percpu_cache()
464 bio_init(bio, bdev, nr_vecs ? bio->bi_inline_vecs : NULL, nr_vecs, opf); in bio_alloc_percpu_cache()
465 bio->bi_pool = bs; in bio_alloc_percpu_cache()
466 return bio; in bio_alloc_percpu_cache()
503 struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs, in bio_alloc_bioset()
508 struct bio *bio; in bio_alloc_bioset() local
517 bio = bio_alloc_percpu_cache(bdev, nr_vecs, opf, in bio_alloc_bioset()
519 if (bio) in bio_alloc_bioset()
520 return bio; in bio_alloc_bioset()
565 bio = p + bs->front_pad; in bio_alloc_bioset()
578 bio_init(bio, bdev, bvl, nr_vecs, opf); in bio_alloc_bioset()
580 bio_init(bio, bdev, bio->bi_inline_vecs, BIO_INLINE_VECS, opf); in bio_alloc_bioset()
582 bio_init(bio, bdev, NULL, 0, opf); in bio_alloc_bioset()
585 bio->bi_pool = bs; in bio_alloc_bioset()
586 return bio; in bio_alloc_bioset()
610 struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask) in bio_kmalloc()
612 struct bio *bio; in bio_kmalloc() local
616 return kmalloc(struct_size(bio, bi_inline_vecs, nr_vecs), gfp_mask); in bio_kmalloc()
620 void zero_fill_bio_iter(struct bio *bio, struct bvec_iter start) in zero_fill_bio_iter() argument
625 __bio_for_each_segment(bv, bio, iter, start) in zero_fill_bio_iter()
640 static void bio_truncate(struct bio *bio, unsigned new_size) in bio_truncate() argument
647 if (new_size >= bio->bi_iter.bi_size) in bio_truncate()
650 if (bio_op(bio) != REQ_OP_READ) in bio_truncate()
653 bio_for_each_segment(bv, bio, iter) { in bio_truncate()
677 bio->bi_iter.bi_size = new_size; in bio_truncate()
692 void guard_bio_eod(struct bio *bio) in guard_bio_eod() argument
694 sector_t maxsector = bdev_nr_sectors(bio->bi_bdev); in guard_bio_eod()
704 if (unlikely(bio->bi_iter.bi_sector >= maxsector)) in guard_bio_eod()
707 maxsector -= bio->bi_iter.bi_sector; in guard_bio_eod()
708 if (likely((bio->bi_iter.bi_size >> 9) <= maxsector)) in guard_bio_eod()
711 bio_truncate(bio, maxsector << 9); in guard_bio_eod()
718 struct bio *bio; in __bio_alloc_cache_prune() local
720 while ((bio = cache->free_list) != NULL) { in __bio_alloc_cache_prune()
721 cache->free_list = bio->bi_next; in __bio_alloc_cache_prune()
723 bio_free(bio); in __bio_alloc_cache_prune()
771 static inline void bio_put_percpu_cache(struct bio *bio) in bio_put_percpu_cache() argument
775 cache = per_cpu_ptr(bio->bi_pool->cache, get_cpu()); in bio_put_percpu_cache()
780 bio_uninit(bio); in bio_put_percpu_cache()
781 bio->bi_next = cache->free_list; in bio_put_percpu_cache()
783 bio->bi_bdev = NULL; in bio_put_percpu_cache()
784 cache->free_list = bio; in bio_put_percpu_cache()
789 bio_uninit(bio); in bio_put_percpu_cache()
790 bio->bi_next = cache->free_list_irq; in bio_put_percpu_cache()
791 cache->free_list_irq = bio; in bio_put_percpu_cache()
800 bio_free(bio); in bio_put_percpu_cache()
811 void bio_put(struct bio *bio) in bio_put() argument
813 if (unlikely(bio_flagged(bio, BIO_REFFED))) { in bio_put()
814 BUG_ON(!atomic_read(&bio->__bi_cnt)); in bio_put()
815 if (!atomic_dec_and_test(&bio->__bi_cnt)) in bio_put()
818 if (bio->bi_opf & REQ_ALLOC_CACHE) in bio_put()
819 bio_put_percpu_cache(bio); in bio_put()
821 bio_free(bio); in bio_put()
825 static int __bio_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp) in __bio_clone() argument
827 bio_set_flag(bio, BIO_CLONED); in __bio_clone()
828 bio->bi_ioprio = bio_src->bi_ioprio; in __bio_clone()
829 bio->bi_write_hint = bio_src->bi_write_hint; in __bio_clone()
830 bio->bi_iter = bio_src->bi_iter; in __bio_clone()
832 if (bio->bi_bdev) { in __bio_clone()
833 if (bio->bi_bdev == bio_src->bi_bdev && in __bio_clone()
835 bio_set_flag(bio, BIO_REMAPPED); in __bio_clone()
836 bio_clone_blkg_association(bio, bio_src); in __bio_clone()
839 if (bio_crypt_clone(bio, bio_src, gfp) < 0) in __bio_clone()
842 bio_integrity_clone(bio, bio_src, gfp) < 0) in __bio_clone()
859 struct bio *bio_alloc_clone(struct block_device *bdev, struct bio *bio_src, in bio_alloc_clone()
862 struct bio *bio; in bio_alloc_clone() local
864 bio = bio_alloc_bioset(bdev, 0, bio_src->bi_opf, gfp, bs); in bio_alloc_clone()
865 if (!bio) in bio_alloc_clone()
868 if (__bio_clone(bio, bio_src, gfp) < 0) { in bio_alloc_clone()
869 bio_put(bio); in bio_alloc_clone()
872 bio->bi_io_vec = bio_src->bi_io_vec; in bio_alloc_clone()
874 return bio; in bio_alloc_clone()
890 int bio_init_clone(struct block_device *bdev, struct bio *bio, in bio_init_clone() argument
891 struct bio *bio_src, gfp_t gfp) in bio_init_clone()
895 bio_init(bio, bdev, bio_src->bi_io_vec, 0, bio_src->bi_opf); in bio_init_clone()
896 ret = __bio_clone(bio, bio_src, gfp); in bio_init_clone()
898 bio_uninit(bio); in bio_init_clone()
911 static inline bool bio_full(struct bio *bio, unsigned len) in bio_full() argument
913 if (bio->bi_vcnt >= bio->bi_max_vecs) in bio_full()
915 if (bio->bi_iter.bi_size > UINT_MAX - len) in bio_full()
980 void __bio_add_page(struct bio *bio, struct page *page, in __bio_add_page() argument
983 WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED)); in __bio_add_page()
984 WARN_ON_ONCE(bio_full(bio, len)); in __bio_add_page()
986 bvec_set_page(&bio->bi_io_vec[bio->bi_vcnt], page, len, off); in __bio_add_page()
987 bio->bi_iter.bi_size += len; in __bio_add_page()
988 bio->bi_vcnt++; in __bio_add_page()
1002 int bio_add_page(struct bio *bio, struct page *page, in bio_add_page() argument
1007 if (WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED))) in bio_add_page()
1009 if (bio->bi_iter.bi_size > UINT_MAX - len) in bio_add_page()
1012 if (bio->bi_vcnt > 0 && in bio_add_page()
1013 bvec_try_merge_page(&bio->bi_io_vec[bio->bi_vcnt - 1], in bio_add_page()
1015 bio->bi_iter.bi_size += len; in bio_add_page()
1019 if (bio->bi_vcnt >= bio->bi_max_vecs) in bio_add_page()
1021 __bio_add_page(bio, page, len, offset); in bio_add_page()
1026 void bio_add_folio_nofail(struct bio *bio, struct folio *folio, size_t len, in bio_add_folio_nofail() argument
1032 __bio_add_page(bio, folio_page(folio, nr), len, off % PAGE_SIZE); in bio_add_folio_nofail()
1050 bool bio_add_folio(struct bio *bio, struct folio *folio, size_t len, in bio_add_folio() argument
1057 return bio_add_page(bio, folio_page(folio, nr), len, off % PAGE_SIZE) > 0; in bio_add_folio()
1061 void __bio_release_pages(struct bio *bio, bool mark_dirty) in __bio_release_pages() argument
1065 bio_for_each_folio_all(fi, bio) { in __bio_release_pages()
1080 void bio_iov_bvec_set(struct bio *bio, const struct iov_iter *iter) in bio_iov_bvec_set() argument
1082 WARN_ON_ONCE(bio->bi_max_vecs); in bio_iov_bvec_set()
1084 bio->bi_vcnt = iter->nr_segs; in bio_iov_bvec_set()
1085 bio->bi_io_vec = (struct bio_vec *)iter->bvec; in bio_iov_bvec_set()
1086 bio->bi_iter.bi_bvec_done = iter->iov_offset; in bio_iov_bvec_set()
1087 bio->bi_iter.bi_size = iov_iter_count(iter); in bio_iov_bvec_set()
1088 bio_set_flag(bio, BIO_CLONED); in bio_iov_bvec_set()
1091 static int bio_iov_add_folio(struct bio *bio, struct folio *folio, size_t len, in bio_iov_add_folio() argument
1096 if (WARN_ON_ONCE(bio->bi_iter.bi_size > UINT_MAX - len)) in bio_iov_add_folio()
1099 if (bio->bi_vcnt > 0 && in bio_iov_add_folio()
1100 bvec_try_merge_page(&bio->bi_io_vec[bio->bi_vcnt - 1], in bio_iov_add_folio()
1103 bio->bi_iter.bi_size += len; in bio_iov_add_folio()
1104 if (same_page && bio_flagged(bio, BIO_PAGE_PINNED)) in bio_iov_add_folio()
1108 bio_add_folio_nofail(bio, folio, len, offset); in bio_iov_add_folio()
1154 static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter) in __bio_iov_iter_get_pages() argument
1157 unsigned short nr_pages = bio->bi_max_vecs - bio->bi_vcnt; in __bio_iov_iter_get_pages()
1158 unsigned short entries_left = bio->bi_max_vecs - bio->bi_vcnt; in __bio_iov_iter_get_pages()
1159 struct bio_vec *bv = bio->bi_io_vec + bio->bi_vcnt; in __bio_iov_iter_get_pages()
1174 if (bio->bi_bdev && blk_queue_pci_p2pdma(bio->bi_bdev->bd_disk->queue)) in __bio_iov_iter_get_pages()
1185 UINT_MAX - bio->bi_iter.bi_size, in __bio_iov_iter_get_pages()
1192 if (bio->bi_bdev) { in __bio_iov_iter_get_pages()
1193 size_t trim = size & (bdev_logical_block_size(bio->bi_bdev) - 1); in __bio_iov_iter_get_pages()
1218 bio_iov_add_folio(bio, folio, len, folio_offset); in __bio_iov_iter_get_pages()
1225 bio_release_page(bio, pages[i++]); in __bio_iov_iter_get_pages()
1250 int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter) in bio_iov_iter_get_pages() argument
1254 if (WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED))) in bio_iov_iter_get_pages()
1258 bio_iov_bvec_set(bio, iter); in bio_iov_iter_get_pages()
1259 iov_iter_advance(iter, bio->bi_iter.bi_size); in bio_iov_iter_get_pages()
1264 bio_set_flag(bio, BIO_PAGE_PINNED); in bio_iov_iter_get_pages()
1266 ret = __bio_iov_iter_get_pages(bio, iter); in bio_iov_iter_get_pages()
1267 } while (!ret && iov_iter_count(iter) && !bio_full(bio, 0)); in bio_iov_iter_get_pages()
1269 return bio->bi_vcnt ? 0 : ret; in bio_iov_iter_get_pages()
1273 static void submit_bio_wait_endio(struct bio *bio) in submit_bio_wait_endio() argument
1275 complete(bio->bi_private); in submit_bio_wait_endio()
1289 int submit_bio_wait(struct bio *bio) in submit_bio_wait() argument
1292 bio->bi_bdev->bd_disk->lockdep_map); in submit_bio_wait()
1294 bio->bi_private = &done; in submit_bio_wait()
1295 bio->bi_end_io = submit_bio_wait_endio; in submit_bio_wait()
1296 bio->bi_opf |= REQ_SYNC; in submit_bio_wait()
1297 submit_bio(bio); in submit_bio_wait()
1300 return blk_status_to_errno(bio->bi_status); in submit_bio_wait()
1304 static void bio_wait_end_io(struct bio *bio) in bio_wait_end_io() argument
1306 complete(bio->bi_private); in bio_wait_end_io()
1307 bio_put(bio); in bio_wait_end_io()
1313 void bio_await_chain(struct bio *bio) in bio_await_chain() argument
1316 bio->bi_bdev->bd_disk->lockdep_map); in bio_await_chain()
1318 bio->bi_private = &done; in bio_await_chain()
1319 bio->bi_end_io = bio_wait_end_io; in bio_await_chain()
1320 bio_endio(bio); in bio_await_chain()
1324 void __bio_advance(struct bio *bio, unsigned bytes) in __bio_advance() argument
1326 if (bio_integrity(bio)) in __bio_advance()
1327 bio_integrity_advance(bio, bytes); in __bio_advance()
1329 bio_crypt_advance(bio, bytes); in __bio_advance()
1330 bio_advance_iter(bio, &bio->bi_iter, bytes); in __bio_advance()
1334 void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter, in bio_copy_data_iter()
1335 struct bio *src, struct bvec_iter *src_iter) in bio_copy_data_iter()
1363 void bio_copy_data(struct bio *dst, struct bio *src) in bio_copy_data()
1372 void bio_free_pages(struct bio *bio) in bio_free_pages() argument
1377 bio_for_each_segment_all(bvec, bio, iter_all) in bio_free_pages()
1405 void bio_set_pages_dirty(struct bio *bio) in bio_set_pages_dirty() argument
1409 bio_for_each_folio_all(fi, bio) { in bio_set_pages_dirty()
1432 static struct bio *bio_dirty_list;
1439 struct bio *bio, *next; in bio_dirty_fn() local
1446 while ((bio = next) != NULL) { in bio_dirty_fn()
1447 next = bio->bi_private; in bio_dirty_fn()
1449 bio_release_pages(bio, true); in bio_dirty_fn()
1450 bio_put(bio); in bio_dirty_fn()
1454 void bio_check_pages_dirty(struct bio *bio) in bio_check_pages_dirty() argument
1459 bio_for_each_folio_all(fi, bio) { in bio_check_pages_dirty()
1464 bio_release_pages(bio, false); in bio_check_pages_dirty()
1465 bio_put(bio); in bio_check_pages_dirty()
1469 bio->bi_private = bio_dirty_list; in bio_check_pages_dirty()
1470 bio_dirty_list = bio; in bio_check_pages_dirty()
1476 static inline bool bio_remaining_done(struct bio *bio) in bio_remaining_done() argument
1482 if (!bio_flagged(bio, BIO_CHAIN)) in bio_remaining_done()
1485 BUG_ON(atomic_read(&bio->__bi_remaining) <= 0); in bio_remaining_done()
1487 if (atomic_dec_and_test(&bio->__bi_remaining)) { in bio_remaining_done()
1488 bio_clear_flag(bio, BIO_CHAIN); in bio_remaining_done()
1508 void bio_endio(struct bio *bio) in bio_endio() argument
1511 if (!bio_remaining_done(bio)) in bio_endio()
1513 if (!bio_integrity_endio(bio)) in bio_endio()
1516 blk_zone_bio_endio(bio); in bio_endio()
1518 rq_qos_done_bio(bio); in bio_endio()
1520 if (bio->bi_bdev && bio_flagged(bio, BIO_TRACE_COMPLETION)) { in bio_endio()
1521 trace_block_bio_complete(bdev_get_queue(bio->bi_bdev), bio); in bio_endio()
1522 bio_clear_flag(bio, BIO_TRACE_COMPLETION); in bio_endio()
1533 if (bio->bi_end_io == bio_chain_endio) { in bio_endio()
1534 bio = __bio_chain_endio(bio); in bio_endio()
1544 if (bio->bi_blkg) { in bio_endio()
1545 blkg_put(bio->bi_blkg); in bio_endio()
1546 bio->bi_blkg = NULL; in bio_endio()
1550 if (bio->bi_end_io) in bio_endio()
1551 bio->bi_end_io(bio); in bio_endio()
1569 struct bio *bio_split(struct bio *bio, int sectors, in bio_split() argument
1572 struct bio *split; in bio_split()
1576 if (WARN_ON_ONCE(sectors >= bio_sectors(bio))) in bio_split()
1580 if (WARN_ON_ONCE(bio_op(bio) == REQ_OP_ZONE_APPEND)) in bio_split()
1584 if (bio->bi_opf & REQ_ATOMIC) in bio_split()
1587 split = bio_alloc_clone(bio->bi_bdev, bio, gfp, bs); in bio_split()
1596 bio_advance(bio, split->bi_iter.bi_size); in bio_split()
1598 if (bio_flagged(bio, BIO_TRACE_COMPLETION)) in bio_split()
1614 void bio_trim(struct bio *bio, sector_t offset, sector_t size) in bio_trim() argument
1617 if (WARN_ON_ONCE(bio->bi_opf & REQ_ATOMIC && size)) in bio_trim()
1621 offset + size > bio_sectors(bio))) in bio_trim()
1625 if (offset == 0 && size == bio->bi_iter.bi_size) in bio_trim()
1628 bio_advance(bio, offset << 9); in bio_trim()
1629 bio->bi_iter.bi_size = size; in bio_trim()
1631 if (bio_integrity(bio)) in bio_trim()
1632 bio_integrity_trim(bio); in bio_trim()
1740 BUILD_BUG_ON(BIO_FLAG_LAST > 8 * sizeof_field(struct bio, bi_flags)); in init_bio()