4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
35 * Author: Nikita Danilov <nikita@clusterfs.com>
38 #define DEBUG_SUBSYSTEM S_OSD
40 #include <linux/module.h>
43 * struct OBD_{ALLOC,FREE}*()
47 #include <obd_support.h>
50 #include <lustre_fid.h>
51 #include <dt_object.h>
52 #include <lustre_scrub.h>
55 /* osd_lookup(), struct osd_thread_info */
56 #include "osd_internal.h"
58 unsigned int osd_oi_count = OSD_OI_FID_NR;
59 module_param(osd_oi_count, int, 0444);
60 MODULE_PARM_DESC(osd_oi_count, "Number of Object Index containers to be created, it's only valid for new filesystem.");
62 static struct dt_index_features oi_feat = {
63 .dif_flags = DT_IND_UPDATE,
64 .dif_recsize_min = sizeof(struct osd_inode_id),
65 .dif_recsize_max = sizeof(struct osd_inode_id),
69 #define OSD_OI_NAME_BASE "oi.16"
71 static void osd_oi_table_put(struct osd_thread_info *info,
72 struct osd_oi **oi_table, unsigned int oi_count)
74 struct iam_container *bag;
77 for (i = 0; i < oi_count; i++) {
78 if (oi_table[i] == NULL)
81 LASSERT(oi_table[i]->oi_inode != NULL);
83 bag = &(oi_table[i]->oi_dir.od_container);
84 if (bag->ic_object == oi_table[i]->oi_inode)
85 iam_container_fini(bag);
86 iput(oi_table[i]->oi_inode);
87 oi_table[i]->oi_inode = NULL;
88 OBD_FREE_PTR(oi_table[i]);
93 static int osd_oi_index_create_one(struct osd_thread_info *info,
94 struct osd_device *osd, const char *name,
95 struct dt_index_features *feat)
97 const struct lu_env *env = info->oti_env;
98 struct osd_inode_id *id = &info->oti_id;
99 struct buffer_head *bh;
101 struct ldiskfs_dir_entry_2 *de;
102 struct dentry *dentry;
103 struct super_block *sb = osd_sb(osd);
104 struct inode *dir = sb->s_root->d_inode;
108 dentry = osd_child_dentry_by_inode(env, dir, name, strlen(name));
109 bh = osd_ldiskfs_find_entry(dir, &dentry->d_name, &de, NULL, NULL);
111 osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
113 inode = osd_iget(info, osd, id);
114 if (!IS_ERR(inode)) {
116 inode = ERR_PTR(-EEXIST);
118 return PTR_ERR(inode);
121 if (osd->od_dt_dev.dd_rdonly)
124 jh = osd_journal_start_sb(sb, LDISKFS_HT_MISC, 100);
128 inode = ldiskfs_create_inode(jh, dir, (S_IFREG | S_IRUGO | S_IWUSR),
131 ldiskfs_journal_stop(jh);
132 return PTR_ERR(inode);
135 ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
136 unlock_new_inode(inode);
138 if (feat->dif_flags & DT_IND_VARKEY)
139 rc = iam_lvar_create(inode, feat->dif_keysize_max,
140 feat->dif_ptrsize, feat->dif_recsize_max,
143 rc = iam_lfix_create(inode, feat->dif_keysize_max,
144 feat->dif_ptrsize, feat->dif_recsize_max,
146 dentry = osd_child_dentry_by_inode(env, dir, name, strlen(name));
147 rc = osd_ldiskfs_add_entry(info, osd, jh, dentry, inode, NULL);
148 ldiskfs_journal_stop(jh);
153 static struct inode *osd_oi_index_open(struct osd_thread_info *info,
154 struct osd_device *osd,
156 struct dt_index_features *f,
159 struct dentry *dentry;
163 dentry = osd_lookup_one_len_unlocked(osd, name, osd_sb(osd)->s_root,
166 return ERR_CAST(dentry);
168 if (dentry->d_inode) {
169 LASSERT(!is_bad_inode(dentry->d_inode));
170 inode = dentry->d_inode;
171 atomic_inc(&inode->i_count);
178 shrink_dcache_parent(osd_sb(osd)->s_root);
180 return ERR_PTR(-ENOENT);
182 rc = osd_oi_index_create_one(info, osd, name, f);
186 dentry = osd_lookup_one_len_unlocked(osd, name, osd_sb(osd)->s_root,
189 return ERR_CAST(dentry);
191 if (dentry->d_inode) {
192 LASSERT(!is_bad_inode(dentry->d_inode));
193 inode = dentry->d_inode;
194 atomic_inc(&inode->i_count);
199 return ERR_PTR(-ENOENT);
203 * Open an OI(Ojbect Index) container.
205 * \param name Name of OI container
206 * \param objp Pointer of returned OI
209 * \retval -ve failure
211 static int osd_oi_open(struct osd_thread_info *info, struct osd_device *osd,
212 char *name, struct osd_oi **oi_slot, bool create)
214 struct osd_directory *dir;
215 struct iam_container *bag;
222 oi_feat.dif_keysize_min = sizeof(struct lu_fid);
223 oi_feat.dif_keysize_max = sizeof(struct lu_fid);
225 inode = osd_oi_index_open(info, osd, name, &oi_feat, create);
227 RETURN(PTR_ERR(inode));
228 ldiskfs_set_inode_state(inode, LDISKFS_STATE_IAM);
230 if (!osd->od_dt_dev.dd_rdonly) {
231 /* 'What the @fid is' is not imporatant, because these objects
232 * have no OI mappings, and only are visible inside the OSD.
234 lu_igif_build(&info->oti_fid, inode->i_ino,
235 inode->i_generation);
236 rc = osd_ea_fid_set(info, inode, &info->oti_fid,
244 GOTO(out_inode, rc = -ENOMEM);
246 oi->oi_inode = inode;
249 bag = &dir->od_container;
250 rc = iam_container_init(bag, &dir->od_descr, inode);
254 rc = iam_container_setup(bag);
256 GOTO(out_container, rc);
262 iam_container_fini(bag);
271 * Open OI(Object Index) table.
272 * If \a oi_count is zero, which means caller doesn't know how many OIs there
273 * will be, this function can either return 0 for new filesystem, or number
274 * of OIs on existed filesystem.
276 * If \a oi_count is non-zero, which means caller does know number of OIs on
277 * filesystem, this function should return the exactly same number on
278 * success, or error code in failure.
280 * \param oi_count Number of expected OI containers
281 * \param create Create OIs if doesn't exist
283 * \retval +ve number of opened OI containers
284 * \retval 0 no OI containers found
285 * \retval -ve failure
288 osd_oi_table_open(struct osd_thread_info *info, struct osd_device *osd,
289 struct osd_oi **oi_table, unsigned int oi_count, bool create)
291 struct scrub_file *sf = &osd->od_scrub.os_scrub.os_file;
297 /* NB: oi_count != 0 means that we have already created/known all OIs
298 * and have known exact number of OIs.
300 LASSERT(oi_count <= OSD_OI_FID_NR_MAX);
302 for (i = 0; i < (oi_count != 0 ? oi_count : OSD_OI_FID_NR_MAX); i++) {
303 char name[sizeof(OSD_OI_NAME_BASE) + 3 * sizeof(i) + 1];
305 if (oi_table[i] != NULL) {
310 snprintf(name, sizeof(name), "%s.%d", OSD_OI_NAME_BASE, i);
311 rc = osd_oi_open(info, osd, name, &oi_table[i], create);
317 if (rc == -ENOENT && create == false) {
322 ldiskfs_set_bit(i, sf->sf_oi_bitmap);
326 CERROR("%s: can't open %s: rc = %d\n",
327 osd_dev2name(osd), name, rc);
329 CERROR("%s: expect to open total %d OI files.\n",
330 osd_dev2name(osd), oi_count);
335 osd_oi_table_put(info, oi_table, oi_count > 0 ? oi_count : i);
342 static int osd_remove_oi_one(struct osd_device *osd, struct dentry *parent,
343 const char *name, int namelen)
345 struct dentry *child;
348 child = osd_lookup_one_len_unlocked(osd, name, parent, namelen);
352 rc = ll_vfs_unlink(parent->d_inode, child);
356 return rc == -ENOENT ? 0 : rc;
359 static int osd_remove_ois(struct osd_thread_info *info, struct osd_device *osd)
366 if (osd->od_dt_dev.dd_rdonly)
369 for (i = 0; i < OSD_OI_FID_NR_MAX; i++) {
370 namelen = scnprintf(name, sizeof(name), "%s.%d",
371 OSD_OI_NAME_BASE, i);
372 rc = osd_remove_oi_one(osd, osd_sb(osd)->s_root, name, namelen);
375 "%s: fail to remove the stale OI file %s: rc = %d\n",
376 osd_dev2name(osd), name, rc);
381 namelen = scnprintf(name, sizeof(name), "%s", OSD_OI_NAME_BASE);
382 rc = osd_remove_oi_one(osd, osd_sb(osd)->s_root, name, namelen);
384 CERROR("%s: fail to remove the stale OI file %s: rc = %d\n",
385 osd_dev2name(osd), name, rc);
390 int osd_oi_init(struct osd_thread_info *info, struct osd_device *osd,
393 struct lustre_scrub *scrub = &osd->od_scrub.os_scrub;
394 struct scrub_file *sf = &scrub->os_file;
400 if (unlikely(sf->sf_oi_count & (sf->sf_oi_count - 1)) != 0) {
401 LCONSOLE_WARN("%s: Invalid OI count in scrub file %d\n",
402 osd_dev2name(osd), sf->sf_oi_count);
407 LCONSOLE_WARN("%s: reset Object Index mappings\n",
409 rc = osd_remove_ois(info, osd);
414 OBD_ALLOC_PTR_ARRAY(oi, OSD_OI_FID_NR_MAX);
418 /* try to open existing multiple OIs first */
419 count = osd_oi_table_open(info, osd, oi, sf->sf_oi_count, false);
421 GOTO(out, rc = count);
424 if (count == sf->sf_oi_count)
425 GOTO(out, rc = count);
427 if (sf->sf_oi_count == 0) {
428 if (likely((count & (count - 1)) == 0))
429 GOTO(out, rc = count);
432 "%s: invalid oi count %d, remove them, then set it to %d\n",
433 osd_dev2name(osd), count, osd_oi_count);
434 osd_oi_table_put(info, oi, count);
435 rc = osd_remove_ois(info, osd);
439 sf->sf_oi_count = osd_oi_count;
442 scrub_file_reset(scrub, osd->od_uuid, SF_RECREATED);
443 count = sf->sf_oi_count;
447 /* if previous failed then try found single OI from old filesystem */
448 rc = osd_oi_open(info, osd, OSD_OI_NAME_BASE, &oi[0], false);
449 if (rc == 0) { /* found single OI from old filesystem */
451 ldiskfs_clear_bit(0, sf->sf_oi_bitmap);
452 if (sf->sf_success_count == 0)
453 /* XXX: There is one corner case that if the OI_scrub
454 * file crashed or lost and we regard it upgrade,
455 * then we allow IGIF lookup to bypass OI files.
457 * The risk is that osd_fid_lookup() may found
458 * a wrong inode with the given IGIF especially
459 * when the MDT has performed file-level backup
460 * and restored after former upgrading from 1.8
461 * to 2.x. Fortunately, the osd_fid_lookup()can
462 * verify the inode to decrease the risk.
464 scrub_file_reset(scrub, osd->od_uuid, SF_UPGRADE);
466 } else if (rc != -ENOENT) {
467 CERROR("%s: can't open %s: rc = %d\n",
468 osd_dev2name(osd), OSD_OI_NAME_BASE, rc);
472 if (sf->sf_oi_count > 0) {
475 count = sf->sf_oi_count;
476 memset(sf->sf_oi_bitmap, 0, SCRUB_OI_BITMAP_SIZE);
477 for (i = 0; i < count; i++)
478 ldiskfs_set_bit(i, sf->sf_oi_bitmap);
479 scrub_file_reset(scrub, osd->od_uuid, SF_RECREATED);
481 count = sf->sf_oi_count = osd_oi_count;
485 rc = scrub_file_store(info->oti_env, scrub);
487 osd_oi_table_put(info, oi, count);
491 /* No OIs exist, new filesystem, create OI objects */
492 rc = osd_oi_table_open(info, osd, oi, count, true);
493 LASSERT(ergo(rc >= 0, rc == count));
499 OBD_FREE_PTR_ARRAY(oi, OSD_OI_FID_NR_MAX);
501 LASSERTF((rc & (rc - 1)) == 0, "Invalid OI count %d\n", rc);
503 osd->od_oi_table = oi;
504 osd->od_oi_count = rc;
505 if (sf->sf_oi_count != rc) {
506 sf->sf_oi_count = rc;
507 rc = scrub_file_store(info->oti_env, scrub);
509 osd_oi_table_put(info, oi, count);
510 OBD_FREE_PTR_ARRAY(oi, OSD_OI_FID_NR_MAX);
520 void osd_oi_fini(struct osd_thread_info *info, struct osd_device *osd)
522 if (unlikely(!osd->od_oi_table))
525 osd_oi_table_put(info, osd->od_oi_table, osd->od_oi_count);
527 OBD_FREE_PTR_ARRAY(osd->od_oi_table, OSD_OI_FID_NR_MAX);
528 osd->od_oi_table = NULL;
531 static inline int fid_is_fs_root(const struct lu_fid *fid)
533 /* Map root inode to special local object FID */
534 return (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE &&
535 fid_oid(fid) == OSD_FS_ROOT_OID));
538 static int osd_oi_iam_lookup(struct osd_thread_info *oti,
539 struct osd_oi *oi, struct dt_rec *rec,
540 const struct dt_key *key)
542 struct iam_container *bag;
543 struct iam_iterator *it = &oti->oti_idx_it;
544 struct iam_path_descr *ipd;
549 LASSERT(oi->oi_inode);
551 bag = &oi->oi_dir.od_container;
552 ipd = osd_idx_ipd_get(oti->oti_env, bag);
556 /* got ipd now we can start iterator. */
557 iam_it_init(it, bag, 0, ipd);
559 rc = iam_it_get(it, (struct iam_key *)key);
561 iam_reccpy(&it->ii_path.ip_leaf, (struct iam_rec *)rec);
564 osd_ipd_put(oti->oti_env, bag, ipd);
566 LINVRNT(osd_invariant(obj));
571 int fid_is_on_ost(struct osd_thread_info *info, struct osd_device *osd,
572 const struct lu_fid *fid, enum oi_check_flags flags)
574 struct lu_seq_range *range = &info->oti_seq_range;
578 if (flags & OI_KNOWN_ON_OST)
581 if (unlikely(fid_is_local_file(fid) || fid_is_igif(fid) ||
582 fid_is_llog(fid)) || fid_is_name_llog(fid) ||
586 if (fid_is_idif(fid) || fid_is_last_id(fid))
589 if (!(flags & OI_CHECK_FLD))
592 if (osd_seq_site(osd)->ss_server_fld == NULL)
595 rc = osd_fld_lookup(info->oti_env, osd, fid_seq(fid), range);
597 /* During upgrade, OST FLDB might not be loaded because
598 * OST FLDB is not created until 2.6, so if some DNE
599 * filesystem upgrade from 2.5 to 2.7/2.8, they will
600 * not be able to find the sequence from local FLDB
601 * cache see fld_index_init().
603 if (rc == -ENOENT && osd->od_is_ost)
607 CERROR("%s: lookup FLD "DFID": rc = %d\n",
608 osd_name(osd), PFID(fid), rc);
612 if (fld_range_is_ost(range))
618 static int __osd_oi_lookup(struct osd_thread_info *info, struct osd_device *osd,
619 const struct lu_fid *fid, struct osd_inode_id *id)
621 struct lu_fid *oi_fid = &info->oti_fid2;
624 fid_cpu_to_be(oi_fid, fid);
625 rc = osd_oi_iam_lookup(info, osd_fid2oi(osd, fid), (struct dt_rec *)id,
626 (const struct dt_key *)oi_fid);
628 osd_id_unpack(id, id);
630 } else if (rc == 0) {
636 int osd_oi_lookup(struct osd_thread_info *info, struct osd_device *osd,
637 const struct lu_fid *fid, struct osd_inode_id *id,
638 enum oi_check_flags flags)
640 if (unlikely(fid_is_last_id(fid)))
641 return osd_obj_spec_lookup(info, osd, fid, id, flags);
643 if (fid_is_llog(fid) || fid_is_on_ost(info, osd, fid, flags))
644 return osd_obj_map_lookup(info, osd, fid, id);
646 if (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE)) {
649 if (fid_is_fs_root(fid)) {
650 osd_id_gen(id, osd_sb(osd)->s_root->d_inode->i_ino,
651 osd_sb(osd)->s_root->d_inode->i_generation);
654 if (unlikely(fid_is_acct(fid)))
655 return osd_acct_obj_lookup(info, osd, fid, id);
657 /* For other special FIDs, try OI first, then do spec lookup */
658 rc = __osd_oi_lookup(info, osd, fid, id);
660 return osd_obj_spec_lookup(info, osd, fid, id, flags);
664 if (!osd->od_igif_inoi && fid_is_igif(fid)) {
665 osd_id_gen(id, lu_igif_ino(fid), lu_igif_gen(fid));
669 return __osd_oi_lookup(info, osd, fid, id);
672 static int osd_oi_iam_refresh(struct osd_thread_info *oti, struct osd_oi *oi,
673 const struct dt_rec *rec, const struct dt_key *key,
674 handle_t *th, bool insert)
676 struct iam_container *bag;
677 struct iam_path_descr *ipd;
682 LASSERT(oi->oi_inode);
683 dquot_initialize(oi->oi_inode);
685 bag = &oi->oi_dir.od_container;
686 ipd = osd_idx_ipd_get(oti->oti_env, bag);
687 if (unlikely(ipd == NULL))
691 LASSERT(th->h_transaction != NULL);
693 rc = iam_insert(th, bag, (const struct iam_key *)key,
694 (const struct iam_rec *)rec, ipd);
696 rc = iam_update(th, bag, (const struct iam_key *)key,
697 (const struct iam_rec *)rec, ipd);
698 osd_ipd_put(oti->oti_env, bag, ipd);
699 LINVRNT(osd_invariant(obj));
703 int osd_oi_insert(struct osd_thread_info *info, struct osd_device *osd,
704 const struct lu_fid *fid, const struct osd_inode_id *id,
705 handle_t *th, enum oi_check_flags flags, bool *exist)
707 struct lu_fid *oi_fid = &info->oti_fid2;
708 struct osd_inode_id *oi_id = &info->oti_id2;
711 if (unlikely(fid_is_last_id(fid)))
712 return osd_obj_spec_insert(info, osd, fid, id, th);
714 if (fid_is_llog(fid) || fid_is_on_ost(info, osd, fid, flags))
715 return osd_obj_map_insert(info, osd, fid, id, th);
717 fid_cpu_to_be(oi_fid, fid);
718 osd_id_pack(oi_id, id);
719 rc = osd_oi_iam_refresh(info, osd_fid2oi(osd, fid),
720 (const struct dt_rec *)oi_id,
721 (const struct dt_key *)oi_fid, th, true);
724 struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
729 rc = osd_oi_lookup(info, osd, fid, oi_id, 0);
733 if (unlikely(osd_id_eq(id, oi_id)))
736 /* Check whether the mapping for oi_id is valid or not. */
737 inode = osd_iget(info, osd, oi_id);
740 if (rc == -ENOENT || rc == -ESTALE)
745 /* The EA inode should NOT be in OI, old OI scrub may added
746 * such OI mapping by wrong, replace it.
748 if (unlikely(osd_is_ea_inode(inode))) {
753 rc = osd_get_lma(info, inode, &info->oti_obj_dentry,
754 &info->oti_ost_attrs);
762 if (!(lma->lma_compat & LMAC_NOT_IN_OI) &&
763 lu_fid_eq(fid, &lma->lma_self_fid)) {
765 "%s: the FID "DFID" is used by two objects: %u/%u %u/%u\n",
766 osd_dev2name(osd), PFID(fid), oi_id->oii_ino,
767 oi_id->oii_gen, id->oii_ino, id->oii_gen);
772 osd_id_pack(oi_id, id);
773 rc = osd_oi_iam_refresh(info, osd_fid2oi(osd, fid),
774 (const struct dt_rec *)oi_id,
775 (const struct dt_key *)oi_fid, th,
784 if (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE))
785 rc = osd_obj_spec_insert(info, osd, fid, id, th);
789 static int osd_oi_iam_delete(struct osd_thread_info *oti, struct osd_oi *oi,
790 const struct dt_key *key, handle_t *th)
792 struct iam_container *bag;
793 struct iam_path_descr *ipd;
798 LASSERT(oi->oi_inode);
799 dquot_initialize(oi->oi_inode);
801 bag = &oi->oi_dir.od_container;
802 ipd = osd_idx_ipd_get(oti->oti_env, bag);
803 if (unlikely(ipd == NULL))
807 LASSERT(th->h_transaction != NULL);
809 rc = iam_delete(th, bag, (const struct iam_key *)key, ipd);
810 osd_ipd_put(oti->oti_env, bag, ipd);
811 LINVRNT(osd_invariant(obj));
815 int osd_oi_delete(struct osd_thread_info *info,
816 struct osd_device *osd, const struct lu_fid *fid,
817 handle_t *th, enum oi_check_flags flags)
819 struct lu_fid *oi_fid = &info->oti_fid2;
821 /* clear idmap cache */
822 if (lu_fid_eq(fid, &info->oti_cache.oic_fid))
823 fid_zero(&info->oti_cache.oic_fid);
825 if (fid_is_last_id(fid))
828 if (fid_is_llog(fid) || fid_is_on_ost(info, osd, fid, flags))
829 return osd_obj_map_delete(info, osd, fid, th);
831 fid_cpu_to_be(oi_fid, fid);
832 return osd_oi_iam_delete(info, osd_fid2oi(osd, fid),
833 (const struct dt_key *)oi_fid, th);
836 int osd_oi_update(struct osd_thread_info *info, struct osd_device *osd,
837 const struct lu_fid *fid, const struct osd_inode_id *id,
838 handle_t *th, enum oi_check_flags flags)
840 struct lu_fid *oi_fid = &info->oti_fid2;
841 struct osd_inode_id *oi_id = &info->oti_id2;
844 if (unlikely(fid_is_last_id(fid)))
845 return osd_obj_spec_update(info, osd, fid, id, th);
847 if (fid_is_llog(fid) || fid_is_on_ost(info, osd, fid, flags))
848 return osd_obj_map_update(info, osd, fid, id, th);
850 fid_cpu_to_be(oi_fid, fid);
851 osd_id_pack(oi_id, id);
852 rc = osd_oi_iam_refresh(info, osd_fid2oi(osd, fid),
853 (const struct dt_rec *)oi_id,
854 (const struct dt_key *)oi_fid, th, false);
858 if (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE))
859 rc = osd_obj_spec_update(info, osd, fid, id, th);
863 int osd_oi_mod_init(void)
865 if (osd_oi_count == 0 || osd_oi_count > OSD_OI_FID_NR_MAX)
866 osd_oi_count = OSD_OI_FID_NR;
868 if ((osd_oi_count & (osd_oi_count - 1)) != 0) {
869 LCONSOLE_WARN("Round up oi_count %d to power2 %d\n",
870 osd_oi_count, size_roundup_power2(osd_oi_count));
871 osd_oi_count = size_roundup_power2(osd_oi_count);