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Searched refs:nr_segs (Results 1 – 25 of 42) sorted by relevance

12

/linux/lib/
H A Diov_iter.c175 const struct iovec *iov, unsigned long nr_segs, in iov_iter_init() argument
184 .nr_segs = nr_segs, in iov_iter_init()
512 for (bvec = i->bvec, end = bvec + i->nr_segs; bvec < end; bvec++) { in iov_iter_bvec_advance()
518 i->nr_segs -= bvec - i->bvec; in iov_iter_bvec_advance()
531 for (iov = iter_iov(i), end = iov + i->nr_segs; iov < end; iov++) { in iov_iter_iovec_advance()
537 i->nr_segs -= iov - iter_iov(i); in iov_iter_iovec_advance()
643 i->nr_segs++; in iov_iter_revert()
658 i->nr_segs++; in iov_iter_revert()
675 if (i->nr_segs > 1) { in iov_iter_single_seg_count()
689 const struct kvec *kvec, unsigned long nr_segs, in iov_iter_kvec() argument
[all …]
/linux/include/linux/
H A Duio.h40 unsigned long nr_segs; member
79 unsigned long nr_segs; member
120 state->nr_segs = iter->nr_segs; in iov_iter_save_state()
175 static inline size_t iov_length(const struct iovec *iov, unsigned long nr_segs) in iov_length() argument
180 for (seg = 0; seg < nr_segs; seg++) in iov_length()
292 unsigned long nr_segs, size_t count);
294 unsigned long nr_segs, size_t count);
296 unsigned long nr_segs, size_t count);
362 unsigned long nr_segs, unsigned long fast_segs,
365 unsigned nr_segs, unsigned fast_segs, struct iovec **iovp,
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H A Diov_iter.h64 iter->nr_segs -= p - iter->__iov; in iterate_iovec()
98 iter->nr_segs -= p - iter->kvec; in iterate_kvec()
137 iter->nr_segs -= p - iter->bvec; in iterate_bvec()
H A Dbio.h18 static inline unsigned int bio_max_segs(unsigned int nr_segs) in bio_max_segs() argument
20 return min(nr_segs, BIO_MAX_VECS); in bio_max_segs()
/linux/net/core/
H A Dnet_test.c51 unsigned int nr_segs; member
60 .nr_segs = 1,
67 .nr_segs = 3,
76 .nr_segs = 3,
84 .nr_segs = 3,
93 .nr_segs = 2,
103 .nr_segs = 3,
111 .nr_segs = 2,
121 .nr_segs = 4,
135 .nr_segs = 4,
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/linux/block/
H A Dblk-merge.c422 unsigned *nr_segs) in bio_split_rw() argument
425 bio_split_rw_at(bio, lim, nr_segs, in bio_split_rw()
437 const struct queue_limits *lim, unsigned *nr_segs) in bio_split_zone_append() argument
441 split_sectors = bio_split_rw_at(bio, lim, nr_segs, in bio_split_zone_append()
481 unsigned int nr_segs; in bio_split_to_limits() local
483 return __bio_split_to_limits(bio, bdev_limits(bio->bi_bdev), &nr_segs); in bio_split_to_limits()
573 int ll_back_merge_fn(struct request *req, struct bio *bio, unsigned int nr_segs) in ll_back_merge_fn() argument
588 return ll_new_hw_segment(req, bio, nr_segs); in ll_back_merge_fn()
592 unsigned int nr_segs) in ll_front_merge_fn() argument
607 return ll_new_hw_segment(req, bio, nr_segs); in ll_front_merge_fn()
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H A Dblk.h342 struct bio *bio, unsigned int nr_segs);
344 unsigned int nr_segs);
346 struct bio *bio, unsigned int nr_segs);
385 unsigned *nr_segs);
387 const struct queue_limits *lim, unsigned *nr_segs);
430 const struct queue_limits *lim, unsigned int *nr_segs) in __bio_split_to_limits() argument
436 return bio_split_rw(bio, lim, nr_segs); in __bio_split_to_limits()
437 *nr_segs = 1; in __bio_split_to_limits()
440 return bio_split_zone_append(bio, lim, nr_segs); in __bio_split_to_limits()
443 return bio_split_discard(bio, lim, nr_segs); in __bio_split_to_limits()
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H A Dblk-map.c26 if (data->nr_segs > UIO_MAXIOV) in bio_alloc_map_data()
29 bmd = kmalloc_flex(*bmd, iov, data->nr_segs, gfp_mask); in bio_alloc_map_data()
34 memcpy(bmd->iov, iter_iov(data), sizeof(struct iovec) * data->nr_segs); in bio_alloc_map_data()
430 unsigned int nr_segs = 0; in blk_rq_append_bio() local
434 ret = bio_split_io_at(bio, lim, &nr_segs, max_bytes, 0); in blk_rq_append_bio()
443 if (!ll_back_merge_fn(rq, bio, nr_segs)) in blk_rq_append_bio()
454 rq->nr_phys_segments = nr_segs; in blk_rq_append_bio()
H A Dblk-mq-sched.c336 unsigned int nr_segs) in blk_mq_sched_bio_merge() argument
345 ret = e->type->ops.bio_merge(q, bio, nr_segs); in blk_mq_sched_bio_merge()
362 if (blk_bio_list_merge(q, &ctx->rq_lists[type], bio, nr_segs)) in blk_mq_sched_bio_merge()
H A Dblk-zoned.c1212 struct bio *bio, unsigned int nr_segs) in disk_zone_wplug_add_bio() argument
1233 bio->__bi_nr_segments = nr_segs; in disk_zone_wplug_add_bio()
1423 static bool blk_zone_wplug_handle_write(struct bio *bio, unsigned int nr_segs) in blk_zone_wplug_handle_write() argument
1518 disk_zone_wplug_add_bio(disk, zwplug, bio, nr_segs); in blk_zone_wplug_handle_write()
1589 bool blk_zone_plug_bio(struct bio *bio, unsigned int nr_segs) in blk_zone_plug_bio() argument
1622 return blk_zone_wplug_handle_write(bio, nr_segs); in blk_zone_plug_bio()
H A Dblk-mq.c2655 unsigned int nr_segs) in blk_mq_bio_to_request() argument
2667 rq->nr_phys_segments = nr_segs; in blk_mq_bio_to_request()
3004 struct bio *bio, unsigned int nr_segs) in blk_mq_attempt_bio_merge() argument
3007 if (blk_attempt_plug_merge(q, bio, nr_segs)) in blk_mq_attempt_bio_merge()
3009 if (blk_mq_sched_bio_merge(q, bio, nr_segs)) in blk_mq_attempt_bio_merge()
3100 unsigned int nr_segs; in blk_mq_submit_bio() local
3116 nr_segs = bio->__bi_nr_segments; in blk_mq_submit_bio()
3146 bio = __bio_split_to_limits(bio, &q->limits, &nr_segs); in blk_mq_submit_bio()
3155 if (blk_mq_attempt_bio_merge(q, bio, nr_segs)) in blk_mq_submit_bio()
3159 if (blk_zone_plug_bio(bio, nr_segs)) in blk_mq_submit_bio()
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/linux/fs/smb/server/
H A Dtransport_tcp.c123 unsigned int nr_segs, size_t bytes) in kvec_array_init() argument
134 nr_segs--; in kvec_array_init()
139 memcpy(new, iov, sizeof(*iov) * nr_segs); in kvec_array_init()
142 return nr_segs; in kvec_array_init()
152 static struct kvec *get_conn_iovec(struct tcp_transport *t, unsigned int nr_segs) in get_conn_iovec() argument
156 if (t->iov && nr_segs <= t->nr_iov) in get_conn_iovec()
160 new_iov = kmalloc_objs(*new_iov, nr_segs, KSMBD_DEFAULT_GFP); in get_conn_iovec()
164 t->nr_iov = nr_segs; in get_conn_iovec()
355 unsigned int nr_segs, unsigned int to_read, in ksmbd_tcp_readv() argument
365 iov = get_conn_iovec(t, nr_segs); in ksmbd_tcp_readv()
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/linux/drivers/scsi/
H A Dxen-scsifront.c1133 unsigned int sg_grant, nr_segs; in scsifront_read_backend_params() local
1137 nr_segs = min_t(unsigned int, sg_grant, SG_ALL); in scsifront_read_backend_params()
1138 nr_segs = max_t(unsigned int, nr_segs, VSCSIIF_SG_TABLESIZE); in scsifront_read_backend_params()
1139 nr_segs = min_t(unsigned int, nr_segs, in scsifront_read_backend_params()
1144 dev_info(&dev->dev, "using up to %d SG entries\n", nr_segs); in scsifront_read_backend_params()
1145 else if (info->pause && nr_segs < host->sg_tablesize) in scsifront_read_backend_params()
1148 host->sg_tablesize, nr_segs); in scsifront_read_backend_params()
1150 host->sg_tablesize = nr_segs; in scsifront_read_backend_params()
1151 host->max_sectors = (nr_segs - 1) * PAGE_SIZE / 512; in scsifront_read_backend_params()
/linux/arch/powerpc/mm/
H A Ddma-noncoherent.c65 int nr_segs = 1 + ((size - seg_size) + PAGE_SIZE - 1)/PAGE_SIZE; in __dma_sync_page_highmem() local
84 } while (seg_nr < nr_segs); in __dma_sync_page_highmem()
/linux/drivers/hwtracing/intel_th/
H A Dmsu.c74 unsigned int nr_segs; member
339 for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) { in msc_win_total_sz()
434 for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) { in msc_win_oldest_sg()
671 for_each_sg(win->sgt->sgl, sg, win->nr_segs, blk) { in msc_buffer_clear_hw_header()
1002 unsigned int nr_segs) in __msc_buffer_win_alloc() argument
1008 ret = sg_alloc_table(win->sgt, nr_segs, GFP_KERNEL); in __msc_buffer_win_alloc()
1012 for_each_sg(win->sgt->sgl, sg_ptr, nr_segs, i) { in __msc_buffer_win_alloc()
1022 return nr_segs; in __msc_buffer_win_alloc()
1047 for_each_sg(win->sgt->sgl, sg_ptr, win->nr_segs, i) { in msc_buffer_set_uc()
1067 for_each_sg(win->sgt->sgl, sg_ptr, win->nr_segs, i) { in msc_buffer_set_wb()
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/linux/drivers/md/bcache/
H A Ddebug.c110 unsigned int nr_segs = bio_segments(bio); in bch_data_verify() local
115 check = bio_kmalloc(nr_segs, GFP_NOIO); in bch_data_verify()
118 bio_init_inline(check, bio->bi_bdev, nr_segs, REQ_OP_READ); in bch_data_verify()
/linux/drivers/nvme/target/
H A Dpci-epf.c683 int nr_segs = iod->nr_data_segs + nsegs; in nvmet_pci_epf_alloc_iod_data_segs() local
686 nr_segs * sizeof(struct nvmet_pci_epf_segment), in nvmet_pci_epf_alloc_iod_data_segs()
691 iod->nr_data_segs = nr_segs; in nvmet_pci_epf_alloc_iod_data_segs()
774 int nr_segs, nr_prps = 0; in nvmet_pci_epf_iod_parse_prp_list() local
794 nr_segs = (transfer_len + ofst + ctrl->mps - 1) >> ctrl->mps_shift; in nvmet_pci_epf_iod_parse_prp_list()
796 ret = nvmet_pci_epf_alloc_iod_data_segs(iod, nr_segs); in nvmet_pci_epf_iod_parse_prp_list()
807 nr_segs = 1; in nvmet_pci_epf_iod_parse_prp_list()
848 nr_segs++; in nvmet_pci_epf_iod_parse_prp_list()
849 if (WARN_ON_ONCE(nr_segs > iod->nr_data_segs)) in nvmet_pci_epf_iod_parse_prp_list()
866 iod->nr_data_segs = nr_segs; in nvmet_pci_epf_iod_parse_prp_list()
[all …]
H A Dio-cmd-file.c77 unsigned long nr_segs, size_t count, int ki_flags) in nvmet_file_submit_bvec() argument
94 iov_iter_bvec(&iter, rw, req->f.bvec, nr_segs, count); in nvmet_file_submit_bvec()
/linux/fs/netfs/
H A Diterator.c128 unsigned int nbv = iter->nr_segs, ix = 0, nsegs = 0; in netfs_limit_bvec()
169 unsigned int nkv = iter->nr_segs, ix = 0, nsegs = 0; in netfs_limit_kvec()
/linux/io_uring/
H A Dnet.c217 int ret, nr_segs; in io_net_import_vec() local
220 nr_segs = iomsg->vec.nr; in io_net_import_vec()
223 nr_segs = 1; in io_net_import_vec()
227 ret = __import_iovec(ddir, uiov, uvec_seg, nr_segs, &iov, in io_net_import_vec()
234 io_vec_reset_iovec(&iomsg->vec, iov, iomsg->msg.msg_iter.nr_segs); in io_net_import_vec()
265 iomsg->msg.msg_iter.nr_segs = 0; in io_msg_copy_hdr()
353 kmsg->msg.msg_iter.nr_segs = sr->len; in io_send_setup()
381 kmsg->msg.msg_iter.nr_segs = msg.msg_iovlen; in io_sendmsg_setup()
1487 from->nr_segs -= bi.bi_idx; in io_sg_from_iter()
1514 unsigned uvec_segs = kmsg->msg.msg_iter.nr_segs; in io_send_zc_import()
H A Drw.c74 int ret, nr_segs; in io_import_vec() local
78 nr_segs = io->vec.nr; in io_import_vec()
81 nr_segs = 1; in io_import_vec()
85 ret = __import_iovec(ddir, uvec, uvec_segs, nr_segs, &iov, &io->iter, in io_import_vec()
91 io_vec_reset_iovec(&io->vec, iov, io->iter.nr_segs); in io_import_vec()
/linux/fs/iomap/
H A Dioend.c468 unsigned int nr_segs; in iomap_split_ioend() local
478 sector_offset = bio_split_rw_at(bio, lim, &nr_segs, max_len); in iomap_split_ioend()
/linux/drivers/block/xen-blkback/
H A Dblkback.c710 invcount = xen_blkbk_unmap_prepare(ring, pages, req->nr_segs, in xen_blkbk_unmap_and_respond()
906 pending_req->nr_segs, in xen_blkbk_map_seg()
922 nseg = pending_req->nr_segs; in xen_blkbk_parse_indirect()
1360 pending_req->nr_segs = nseg; in dispatch_rw_block_io()
1474 pending_req->nr_segs); in dispatch_rw_block_io()
H A Dcommon.h347 int nr_segs; member
/linux/drivers/usb/host/
H A Dxen-hcd.c719 int nr_segs = 0; in xenhcd_gnttab_done() local
728 nr_segs = shadow->req.nr_buffer_segs; in xenhcd_gnttab_done()
731 nr_segs += shadow->req.u.isoc.nr_frame_desc_segs; in xenhcd_gnttab_done()
733 for (i = 0; i < nr_segs; i++) { in xenhcd_gnttab_done()

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