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-rw-r--r--fs/nfs/objlayout/objio_osd.c504
1 files changed, 0 insertions, 504 deletions
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index 00b384934c32..3161da654a9b 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -188,48 +188,6 @@ out:
188 return err; 188 return err;
189} 189}
190 190
191#if 0
192static int _verify_data_map(struct pnfs_osd_layout *layout)
193{
194 struct pnfs_osd_data_map *data_map = &layout->olo_map;
195 u64 stripe_length;
196 u32 group_width;
197
198/* FIXME: Only raid0 for now. if not go through MDS */
199 if (data_map->odm_raid_algorithm != PNFS_OSD_RAID_0) {
200 printk(KERN_ERR "Only RAID_0 for now\n");
201 return -ENOTSUPP;
202 }
203 if (0 != (data_map->odm_num_comps % (data_map->odm_mirror_cnt + 1))) {
204 printk(KERN_ERR "Data Map wrong, num_comps=%u mirrors=%u\n",
205 data_map->odm_num_comps, data_map->odm_mirror_cnt);
206 return -EINVAL;
207 }
208
209 if (data_map->odm_group_width)
210 group_width = data_map->odm_group_width;
211 else
212 group_width = data_map->odm_num_comps /
213 (data_map->odm_mirror_cnt + 1);
214
215 stripe_length = (u64)data_map->odm_stripe_unit * group_width;
216 if (stripe_length >= (1ULL << 32)) {
217 printk(KERN_ERR "Total Stripe length(0x%llx)"
218 " >= 32bit is not supported\n", _LLU(stripe_length));
219 return -ENOTSUPP;
220 }
221
222 if (0 != (data_map->odm_stripe_unit & ~PAGE_MASK)) {
223 printk(KERN_ERR "Stripe Unit(0x%llx)"
224 " must be Multples of PAGE_SIZE(0x%lx)\n",
225 _LLU(data_map->odm_stripe_unit), PAGE_SIZE);
226 return -ENOTSUPP;
227 }
228
229 return 0;
230}
231#endif
232
233static void copy_single_comp(struct ore_components *oc, unsigned c, 191static void copy_single_comp(struct ore_components *oc, unsigned c,
234 struct pnfs_osd_object_cred *src_comp) 192 struct pnfs_osd_object_cred *src_comp)
235{ 193{
@@ -441,327 +399,6 @@ static void __on_dev_error(struct ore_io_state *ios,
441 dev_offset, dev_len, !ios->reading); 399 dev_offset, dev_len, !ios->reading);
442} 400}
443 401
444#if 0
445static void _clear_bio(struct bio *bio)
446{
447 struct bio_vec *bv;
448 unsigned i;
449
450 __bio_for_each_segment(bv, bio, i, 0) {
451 unsigned this_count = bv->bv_len;
452
453 if (likely(PAGE_SIZE == this_count))
454 clear_highpage(bv->bv_page);
455 else
456 zero_user(bv->bv_page, bv->bv_offset, this_count);
457 }
458}
459
460static int _io_check(struct objio_state *ios, bool is_write)
461{
462 enum osd_err_priority oep = OSD_ERR_PRI_NO_ERROR;
463 int lin_ret = 0;
464 int i;
465
466 for (i = 0; i < ios->numdevs; i++) {
467 struct osd_sense_info osi;
468 struct osd_request *or = ios->per_dev[i].or;
469 int ret;
470
471 if (!or)
472 continue;
473
474 ret = osd_req_decode_sense(or, &osi);
475 if (likely(!ret))
476 continue;
477
478 if (OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) {
479 /* start read offset passed endof file */
480 BUG_ON(is_write);
481 _clear_bio(ios->per_dev[i].bio);
482 dprintk("%s: start read offset passed end of file "
483 "offset=0x%llx, length=0x%lx\n", __func__,
484 _LLU(ios->per_dev[i].offset),
485 ios->per_dev[i].length);
486
487 continue; /* we recovered */
488 }
489 __on_dev_error(ios, is_write, ios->oc->ods[i],
490 ios->per_dev[i].dev, osi.osd_err_pri,
491 ios->per_dev[i].offset, ios->per_dev[i].length);
492
493 if (osi.osd_err_pri >= oep) {
494 oep = osi.osd_err_pri;
495 lin_ret = ret;
496 }
497 }
498
499 return lin_ret;
500}
501
502/*
503 * Common IO state helpers.
504 */
505static void _io_free(struct objio_state *ios)
506{
507 unsigned i;
508
509 for (i = 0; i < ios->numdevs; i++) {
510 struct _objio_per_comp *per_dev = &ios->per_dev[i];
511
512 if (per_dev->or) {
513 osd_end_request(per_dev->or);
514 per_dev->or = NULL;
515 }
516
517 if (per_dev->bio) {
518 bio_put(per_dev->bio);
519 per_dev->bio = NULL;
520 }
521 }
522}
523
524struct osd_dev *_io_od(struct objio_state *ios, unsigned dev)
525{
526 unsigned min_dev = ios->oc->first_dev;
527 unsigned max_dev = min_dev + ios->oc->numdevs;
528
529 BUG_ON(dev < min_dev || max_dev <= dev);
530 return ios->oc->ods[dev - min_dev]->od;
531}
532
533struct _striping_info {
534 u64 obj_offset;
535 u64 group_length;
536 unsigned dev;
537 unsigned unit_off;
538};
539
540static void _calc_stripe_info(struct objio_state *ios, u64 file_offset,
541 struct _striping_info *si)
542{
543 u32 stripe_unit = ios->layout->stripe_unit;
544 u32 group_width = ios->layout->group_width;
545 u64 group_depth = ios->layout->group_depth;
546 u32 U = stripe_unit * group_width;
547
548 u64 T = U * group_depth;
549 u64 S = T * ios->layout->group_count;
550 u64 M = div64_u64(file_offset, S);
551
552 /*
553 G = (L - (M * S)) / T
554 H = (L - (M * S)) % T
555 */
556 u64 LmodU = file_offset - M * S;
557 u32 G = div64_u64(LmodU, T);
558 u64 H = LmodU - G * T;
559
560 u32 N = div_u64(H, U);
561
562 div_u64_rem(file_offset, stripe_unit, &si->unit_off);
563 si->obj_offset = si->unit_off + (N * stripe_unit) +
564 (M * group_depth * stripe_unit);
565
566 /* "H - (N * U)" is just "H % U" so it's bound to u32 */
567 si->dev = (u32)(H - (N * U)) / stripe_unit + G * group_width;
568 si->dev *= ios->layout->mirrors_p1;
569
570 si->group_length = T - H;
571}
572
573static int _add_stripe_unit(struct objio_state *ios, unsigned *cur_pg,
574 unsigned pgbase, struct _objio_per_comp *per_dev, int len,
575 gfp_t gfp_flags)
576{
577 unsigned pg = *cur_pg;
578 int cur_len = len;
579 struct request_queue *q =
580 osd_request_queue(_io_od(ios, per_dev->dev));
581
582 if (per_dev->bio == NULL) {
583 unsigned pages_in_stripe = ios->layout->group_width *
584 (ios->layout->stripe_unit / PAGE_SIZE);
585 unsigned bio_size = (ios->nr_pages + pages_in_stripe) /
586 ios->layout->group_width;
587
588 if (BIO_MAX_PAGES_KMALLOC < bio_size)
589 bio_size = BIO_MAX_PAGES_KMALLOC;
590
591 per_dev->bio = bio_kmalloc(gfp_flags, bio_size);
592 if (unlikely(!per_dev->bio)) {
593 dprintk("Faild to allocate BIO size=%u\n", bio_size);
594 return -ENOMEM;
595 }
596 }
597
598 while (cur_len > 0) {
599 unsigned pglen = min_t(unsigned, PAGE_SIZE - pgbase, cur_len);
600 unsigned added_len;
601
602 BUG_ON(ios->nr_pages <= pg);
603 cur_len -= pglen;
604
605 added_len = bio_add_pc_page(q, per_dev->bio,
606 ios->pages[pg], pglen, pgbase);
607 if (unlikely(pglen != added_len))
608 return -ENOMEM;
609 pgbase = 0;
610 ++pg;
611 }
612 BUG_ON(cur_len);
613
614 per_dev->length += len;
615 *cur_pg = pg;
616 return 0;
617}
618
619static int _prepare_one_group(struct objio_state *ios, u64 length,
620 struct _striping_info *si, unsigned *last_pg,
621 gfp_t gfp_flags)
622{
623 unsigned stripe_unit = ios->layout->stripe_unit;
624 unsigned mirrors_p1 = ios->layout->mirrors_p1;
625 unsigned devs_in_group = ios->layout->group_width * mirrors_p1;
626 unsigned dev = si->dev;
627 unsigned first_dev = dev - (dev % devs_in_group);
628 unsigned max_comp = ios->numdevs ? ios->numdevs - mirrors_p1 : 0;
629 unsigned cur_pg = *last_pg;
630 int ret = 0;
631
632 while (length) {
633 struct _objio_per_comp *per_dev = &ios->per_dev[dev - first_dev];
634 unsigned cur_len, page_off = 0;
635
636 if (!per_dev->length) {
637 per_dev->dev = dev;
638 if (dev < si->dev) {
639 per_dev->offset = si->obj_offset + stripe_unit -
640 si->unit_off;
641 cur_len = stripe_unit;
642 } else if (dev == si->dev) {
643 per_dev->offset = si->obj_offset;
644 cur_len = stripe_unit - si->unit_off;
645 page_off = si->unit_off & ~PAGE_MASK;
646 BUG_ON(page_off &&
647 (page_off != ios->pgbase));
648 } else { /* dev > si->dev */
649 per_dev->offset = si->obj_offset - si->unit_off;
650 cur_len = stripe_unit;
651 }
652
653 if (max_comp < dev - first_dev)
654 max_comp = dev - first_dev;
655 } else {
656 cur_len = stripe_unit;
657 }
658 if (cur_len >= length)
659 cur_len = length;
660
661 ret = _add_stripe_unit(ios, &cur_pg, page_off , per_dev,
662 cur_len, gfp_flags);
663 if (unlikely(ret))
664 goto out;
665
666 dev += mirrors_p1;
667 dev = (dev % devs_in_group) + first_dev;
668
669 length -= cur_len;
670 ios->length += cur_len;
671 }
672out:
673 ios->numdevs = max_comp + mirrors_p1;
674 *last_pg = cur_pg;
675 return ret;
676}
677
678static int _io_rw_pagelist(struct objio_state *ios, gfp_t gfp_flags)
679{
680 u64 length = ios->count;
681 u64 offset = ios->offset;
682 struct _striping_info si;
683 unsigned last_pg = 0;
684 int ret = 0;
685
686 while (length) {
687 _calc_stripe_info(ios, offset, &si);
688
689 if (length < si.group_length)
690 si.group_length = length;
691
692 ret = _prepare_one_group(ios, si.group_length, &si, &last_pg, gfp_flags);
693 if (unlikely(ret))
694 goto out;
695
696 offset += si.group_length;
697 length -= si.group_length;
698 }
699
700out:
701 if (!ios->length)
702 return ret;
703
704 return 0;
705}
706
707static int _sync_done(struct objio_state *ios)
708{
709 struct completion *waiting = ios->private;
710
711 complete(waiting);
712 return 0;
713}
714
715static void _last_io(struct kref *kref)
716{
717 struct objio_state *ios = container_of(kref, struct objio_state, kref);
718
719 ios->done(ios);
720}
721
722static void _done_io(struct osd_request *or, void *p)
723{
724 struct objio_state *ios = p;
725
726 kref_put(&ios->kref, _last_io);
727}
728
729static int _io_exec(struct objio_state *ios)
730{
731 DECLARE_COMPLETION_ONSTACK(wait);
732 int ret = 0;
733 unsigned i;
734 objio_done_fn saved_done_fn = ios->done;
735 bool sync = ios->sync;
736
737 if (sync) {
738 ios->done = _sync_done;
739 ios->private = &wait;
740 }
741
742 kref_init(&ios->kref);
743
744 for (i = 0; i < ios->numdevs; i++) {
745 struct osd_request *or = ios->per_dev[i].or;
746
747 if (!or)
748 continue;
749
750 kref_get(&ios->kref);
751 osd_execute_request_async(or, _done_io, ios);
752 }
753
754 kref_put(&ios->kref, _last_io);
755
756 if (sync) {
757 wait_for_completion(&wait);
758 ret = saved_done_fn(ios);
759 }
760
761 return ret;
762}
763#endif
764
765/* 402/*
766 * read 403 * read
767 */ 404 */
@@ -781,63 +418,6 @@ static void _read_done(struct ore_io_state *ios, void *private)
781 objlayout_read_done(&objios->oir, status, objios->sync); 418 objlayout_read_done(&objios->oir, status, objios->sync);
782} 419}
783 420
784#if 0
785static int _read_mirrors(struct objio_state *ios, unsigned cur_comp)
786{
787 struct osd_request *or = NULL;
788 struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp];
789 unsigned dev = per_dev->dev;
790 struct ore_comp *cred =
791 &ios->oc->comps[cur_comp];
792 struct osd_obj_id obj = cred->obj;
793 int ret;
794
795 or = osd_start_request(_io_od(ios, dev), GFP_KERNEL);
796 if (unlikely(!or)) {
797 ret = -ENOMEM;
798 goto err;
799 }
800 per_dev->or = or;
801
802 osd_req_read(or, &obj, per_dev->offset, per_dev->bio, per_dev->length);
803
804 ret = osd_finalize_request(or, 0, cred->cred, NULL);
805 if (ret) {
806 dprintk("%s: Faild to osd_finalize_request() => %d\n",
807 __func__, ret);
808 goto err;
809 }
810
811 dprintk("%s:[%d] dev=%d obj=0x%llx start=0x%llx length=0x%lx\n",
812 __func__, cur_comp, dev, obj.id, _LLU(per_dev->offset),
813 per_dev->length);
814
815err:
816 return ret;
817}
818
819static int _read_exec(struct objio_state *ios)
820{
821 unsigned i;
822 int ret;
823
824 for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
825 if (!ios->per_dev[i].length)
826 continue;
827 ret = _read_mirrors(ios, i);
828 if (unlikely(ret))
829 goto err;
830 }
831
832 ios->done = _read_done;
833 return _io_exec(ios);
834
835err:
836 _io_free(ios);
837 return ret;
838}
839#endif
840
841int objio_read_pagelist(struct nfs_read_data *rdata) 421int objio_read_pagelist(struct nfs_read_data *rdata)
842{ 422{
843 struct objio_state *objios; 423 struct objio_state *objios;
@@ -879,90 +459,6 @@ static void _write_done(struct ore_io_state *ios, void *private)
879 objlayout_write_done(&objios->oir, status, objios->sync); 459 objlayout_write_done(&objios->oir, status, objios->sync);
880} 460}
881 461
882#if 0
883static int _write_mirrors(struct objio_state *ios, unsigned cur_comp)
884{
885 struct _objio_per_comp *master_dev = &ios->per_dev[cur_comp];
886 unsigned dev = ios->per_dev[cur_comp].dev;
887 unsigned last_comp = cur_comp + ios->layout->mirrors_p1;
888 int ret;
889
890 for (; cur_comp < last_comp; ++cur_comp, ++dev) {
891 struct osd_request *or = NULL;
892 struct ore_comp *cred = &ios->oc->comps[cur_comp];
893 struct osd_obj_id obj = cred->obj;
894 struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp];
895 struct bio *bio;
896
897 or = osd_start_request(_io_od(ios, dev), GFP_NOFS);
898 if (unlikely(!or)) {
899 ret = -ENOMEM;
900 goto err;
901 }
902 per_dev->or = or;
903
904 if (per_dev != master_dev) {
905 bio = bio_kmalloc(GFP_NOFS,
906 master_dev->bio->bi_max_vecs);
907 if (unlikely(!bio)) {
908 dprintk("Faild to allocate BIO size=%u\n",
909 master_dev->bio->bi_max_vecs);
910 ret = -ENOMEM;
911 goto err;
912 }
913
914 __bio_clone(bio, master_dev->bio);
915 bio->bi_bdev = NULL;
916 bio->bi_next = NULL;
917 per_dev->bio = bio;
918 per_dev->dev = dev;
919 per_dev->length = master_dev->length;
920 per_dev->offset = master_dev->offset;
921 } else {
922 bio = master_dev->bio;
923 bio->bi_rw |= REQ_WRITE;
924 }
925
926 osd_req_write(or, &obj, per_dev->offset, bio, per_dev->length);
927
928 ret = osd_finalize_request(or, 0, cred->cred, NULL);
929 if (ret) {
930 dprintk("%s: Faild to osd_finalize_request() => %d\n",
931 __func__, ret);
932 goto err;
933 }
934
935 dprintk("%s:[%d] dev=%d obj=0x%llx start=0x%llx length=0x%lx\n",
936 __func__, cur_comp, dev, obj.id, _LLU(per_dev->offset),
937 per_dev->length);
938 }
939
940err:
941 return ret;
942}
943
944static int _write_exec(struct objio_state *ios)
945{
946 unsigned i;
947 int ret;
948
949 for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
950 if (!ios->per_dev[i].length)
951 continue;
952 ret = _write_mirrors(ios, i);
953 if (unlikely(ret))
954 goto err;
955 }
956
957 ios->done = _write_done;
958 return _io_exec(ios);
959
960err:
961 _io_free(ios);
962 return ret;
963}
964#endif
965
966int objio_write_pagelist(struct nfs_write_data *wdata, int how) 462int objio_write_pagelist(struct nfs_write_data *wdata, int how)
967{ 463{
968 struct objio_state *objios; 464 struct objio_state *objios;
generated by cgit v1.2.2 (git 2.25.0) at 2026-04-25 15:40:32 -0400