Whamcloud - gitweb
LU-14927 quota: move qsd_transfer to lquota module
[fs/lustre-release.git] / lustre / osd-zfs / osd_object.c
index f57bcf9..34dfae4 100644 (file)
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
  *
  * lustre/osd-zfs/osd_object.c
  *
 #include <sys/txg.h>
 
 char *osd_obj_tag = "osd_object";
+static int osd_object_sync_delay_us = -1;
 
-static struct dt_object_operations osd_obj_ops;
-static struct lu_object_operations osd_lu_obj_ops;
-extern struct dt_body_operations osd_body_ops;
-static struct dt_object_operations osd_obj_otable_it_ops;
-
-extern struct kmem_cache *osd_object_kmem;
+static const struct dt_object_operations osd_obj_ops;
+static const struct lu_object_operations osd_lu_obj_ops;
+static const struct dt_object_operations osd_obj_otable_it_ops;
 
 static void
 osd_object_sa_fini(struct osd_object *obj)
@@ -130,17 +127,19 @@ void osd_object_sa_dirty_rele(const struct lu_env *env, struct osd_thandle *oh)
                write_lock(&obj->oo_attr_lock);
                list_del_init(&obj->oo_sa_linkage);
                write_unlock(&obj->oo_attr_lock);
-               if (obj->oo_late_xattr) {
+               if (obj->oo_late_xattr && obj->oo_destroyed == 0) {
                        /*
                         * take oo_guard to protect oo_sa_xattr buffer
                         * from concurrent update by osd_xattr_set()
                         */
                        LASSERT(oh->ot_assigned != 0);
                        down_write(&obj->oo_guard);
-                       if (obj->oo_late_attr_set)
-                               __osd_sa_attr_init(env, obj, oh);
-                       else if (obj->oo_late_xattr)
-                               __osd_sa_xattr_update(env, obj, oh);
+                       if (obj->oo_destroyed == 0) {
+                               if (obj->oo_late_attr_set)
+                                       __osd_sa_attr_init(env, obj, oh);
+                               else if (obj->oo_late_xattr)
+                                       __osd_sa_xattr_update(env, obj, oh);
+                       }
                        up_write(&obj->oo_guard);
                }
                sa_spill_rele(obj->oo_sa_hdl);
@@ -185,23 +184,27 @@ osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 /*
  * Retrieve the attributes of a DMU object
  */
-int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
-                         struct osd_object *obj, struct lu_attr *la)
+static int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
+                                struct osd_object *obj, struct lu_attr *la)
 {
-       struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
-       sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
-       int              cnt = 0;
+       struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
+       sa_bulk_attr_t *bulk = osd_oti_get(env)->oti_attr_bulk;
+       struct lustre_mdt_attrs *lma;
+       struct lu_buf buf;
+       int cnt = 0;
        int              rc;
        ENTRY;
 
        LASSERT(obj->oo_dn != NULL);
 
-       la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
-                       LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
+       la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_BTIME | LA_MODE |
+                       LA_TYPE | LA_SIZE | LA_UID | LA_GID | LA_FLAGS |
+                       LA_NLINK;
 
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(o), NULL, osa->btime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
@@ -236,6 +239,7 @@ int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
        la->la_atime = osa->atime[0];
        la->la_mtime = osa->mtime[0];
        la->la_ctime = osa->ctime[0];
+       la->la_btime = osa->btime[0];
        la->la_mode = osa->mode;
        la->la_uid = osa->uid;
        la->la_gid = osa->gid;
@@ -243,27 +247,22 @@ int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
        la->la_flags = attrs_zfs2fs(osa->flags);
        la->la_size = osa->size;
 
-       /* Try to get extra flag from LMA. Right now, only LMAI_ORPHAN
-        * flags is stored in LMA, and it is only for orphan directory */
-       if (S_ISDIR(la->la_mode) && dt_object_exists(&obj->oo_dt)) {
-               struct osd_thread_info *info = osd_oti_get(env);
-               struct lustre_mdt_attrs *lma;
-               struct lu_buf buf;
-
-               lma = (struct lustre_mdt_attrs *)info->oti_buf;
-               buf.lb_buf = lma;
-               buf.lb_len = sizeof(info->oti_buf);
-               rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
-               if (rc > 0) {
-                       rc = 0;
-                       lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
-                       obj->oo_lma_flags =
-                               lma_to_lustre_flags(lma->lma_incompat);
-
-               } else if (rc == -ENODATA) {
-                       rc = 0;
-               }
+       /* Try to get extra flags from LMA */
+       lma = (struct lustre_mdt_attrs *)osd_oti_get(env)->oti_buf;
+       buf.lb_buf = lma;
+       buf.lb_len = sizeof(osd_oti_get(env)->oti_buf);
+       down_read(&obj->oo_guard);
+       rc = osd_xattr_get_lma(env, obj, &buf);
+       if (!rc) {
+               lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
+               obj->oo_lma_flags =
+                       lma_to_lustre_flags(lma->lma_incompat);
+       } else if (rc == -ENODATA ||
+                  !(S_ISDIR(la->la_mode) &&
+                    dt_object_exists(&obj->oo_dt))) {
+               rc = 0;
        }
+       up_read(&obj->oo_guard);
 
        if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
                rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
@@ -290,6 +289,7 @@ int __osd_obj2dnode(objset_t *os, uint64_t oid, dnode_t **dnp)
        dbi = (dmu_buf_impl_t *)db;
        DB_DNODE_ENTER(dbi);
        *dnp = DB_DNODE(dbi);
+       DB_DNODE_EXIT(dbi);
        LASSERT(*dnp != NULL);
 
        return 0;
@@ -308,9 +308,26 @@ struct lu_object *osd_object_alloc(const struct lu_env *env,
        OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, GFP_NOFS);
        if (mo != NULL) {
                struct lu_object *l;
+               struct lu_object_header *h;
+               struct osd_device *o = osd_dev(d);
 
                l = &mo->oo_dt.do_lu;
-               dt_object_init(&mo->oo_dt, NULL, d);
+               if (unlikely(o->od_in_init)) {
+                       OBD_ALLOC_PTR(h);
+                       if (!h) {
+                               OBD_FREE_PTR(mo);
+                               return NULL;
+                       }
+
+                       lu_object_header_init(h);
+                       lu_object_init(l, h, d);
+                       lu_object_add_top(h, l);
+                       mo->oo_header = h;
+               } else {
+                       dt_object_init(&mo->oo_dt, NULL, d);
+                       mo->oo_header = NULL;
+               }
+
                mo->oo_dt.do_ops = &osd_obj_ops;
                l->lo_ops = &osd_lu_obj_ops;
                INIT_LIST_HEAD(&mo->oo_sa_linkage);
@@ -388,7 +405,7 @@ out:
 /*
  * Concurrency: shouldn't matter.
  */
-int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
+static int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 {
        struct osd_device       *osd = osd_obj2dev(obj);
        const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
@@ -436,9 +453,10 @@ static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
        struct lu_buf           buf;
        int                     rc;
        struct lustre_mdt_attrs *lma;
+       const struct lu_fid *rfid = lu_object_fid(&obj->oo_dt.do_lu);
        ENTRY;
 
-       CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
+       BUILD_BUG_ON(sizeof(info->oti_buf) < sizeof(*lma));
        lma = (struct lustre_mdt_attrs *)info->oti_buf;
        buf.lb_buf = lma;
        buf.lb_len = sizeof(info->oti_buf);
@@ -452,12 +470,23 @@ static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
                        CWARN("%s: unsupported incompat LMA feature(s) %#x for "
                              "fid = "DFID"\n", osd_obj2dev(obj)->od_svname,
                              lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
-                             PFID(lu_object_fid(&obj->oo_dt.do_lu)));
+                             PFID(rfid));
                        rc = -EOPNOTSUPP;
+               } else if (unlikely(!lu_fid_eq(rfid, &lma->lma_self_fid))) {
+                       CERROR("%s: FID-in-LMA "DFID" does not match the "
+                             "object self-fid "DFID"\n",
+                             osd_obj2dev(obj)->od_svname,
+                             PFID(&lma->lma_self_fid), PFID(rfid));
+                       rc = -EREMCHG;
                } else {
+                       struct osd_device *osd = osd_obj2dev(obj);
+
                        if (lma->lma_compat & LMAC_STRIPE_INFO &&
-                           osd_obj2dev(obj)->od_is_ost)
+                           osd->od_is_ost)
                                obj->oo_pfid_in_lma = 1;
+                       if (unlikely(lma->lma_incompat & LMAI_REMOTE_PARENT) &&
+                           osd->od_remote_parent_dir != ZFS_NO_OBJECT)
+                               lu_object_set_agent_entry(&obj->oo_dt.do_lu);
                }
        } else if (rc == -ENODATA) {
                /* haven't initialize LMA xattr */
@@ -506,8 +535,15 @@ static int osd_object_init(const struct lu_env *env, struct lu_object *l,
        struct osd_object *obj = osd_obj(l);
        struct osd_device *osd = osd_obj2dev(obj);
        const struct lu_fid *fid = lu_object_fid(l);
+       struct lustre_scrub *scrub = &osd->od_scrub;
+       struct osd_thread_info *info = osd_oti_get(env);
+       struct luz_direntry *zde = &info->oti_zde;
+       struct osd_idmap_cache *idc;
+       char *name = info->oti_str;
        uint64_t oid;
        int rc = 0;
+       int rc1;
+       bool remote = false;
        ENTRY;
 
        LASSERT(osd_invariant(obj));
@@ -515,10 +551,11 @@ static int osd_object_init(const struct lu_env *env, struct lu_object *l,
        if (fid_is_otable_it(&l->lo_header->loh_fid)) {
                obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
                l->lo_header->loh_attr |= LOHA_EXISTS;
-               RETURN(0);
+
+               GOTO(out, rc = 0);
        }
 
-       if (conf != NULL && conf->loc_flags & LOC_F_NEW)
+       if (conf && conf->loc_flags & LOC_F_NEW)
                GOTO(out, rc = 0);
 
        if (unlikely(fid_is_acct(fid))) {
@@ -531,31 +568,121 @@ static int osd_object_init(const struct lu_env *env, struct lu_object *l,
                GOTO(out, rc = 0);
        }
 
-       rc = osd_fid_lookup(env, osd, fid, &oid);
-       if (rc == 0) {
-               LASSERT(obj->oo_dn == NULL);
-               rc = __osd_obj2dnode(osd->od_os, oid, &obj->oo_dn);
-               /* EEXIST will be returned if object is being deleted in ZFS */
-               if (rc == -EEXIST) {
-                       rc = 0;
-                       GOTO(out, rc);
+       idc = osd_idc_find(env, osd, fid);
+       if (idc && !idc->oic_remote && idc->oic_dnode != ZFS_NO_OBJECT) {
+               oid = idc->oic_dnode;
+               goto zget;
+       }
+
+       rc = -ENOENT;
+       if (!list_empty(&osd->od_scrub.os_inconsistent_items))
+               rc = osd_oii_lookup(osd, fid, &oid);
+
+       if (rc)
+               rc = osd_fid_lookup(env, osd, fid, &oid);
+
+       if (rc == -ENOENT) {
+               if (likely(!(fid_is_norm(fid) || fid_is_igif(fid)) ||
+                          fid_is_on_ost(env, osd, fid) ||
+                          !zfs_test_bit(osd_oi_fid2idx(osd, fid),
+                                        scrub->os_file.sf_oi_bitmap)))
+                       GOTO(out, rc = 0);
+
+               rc = -EREMCHG;
+               goto trigger;
+       }
+
+       if (rc)
+               GOTO(out, rc);
+
+zget:
+       LASSERT(obj->oo_dn == NULL);
+
+       rc = __osd_obj2dnode(osd->od_os, oid, &obj->oo_dn);
+       /* EEXIST will be returned if object is being deleted in ZFS */
+       if (rc == -EEXIST)
+               GOTO(out, rc = 0);
+
+       if (rc) {
+               CERROR("%s: lookup "DFID"/%#llx failed: rc = %d\n",
+                      osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
+               GOTO(out, rc);
+       }
+
+       rc = osd_object_init0(env, obj);
+       if (rc)
+               GOTO(out, rc);
+
+       if (unlikely(obj->oo_header))
+               GOTO(out, rc = 0);
+
+       rc = osd_check_lma(env, obj);
+       if (rc != -EREMCHG)
+               GOTO(out, rc);
+
+       osd_scrub_refresh_mapping(env, osd, fid, oid, DTO_INDEX_DELETE, true,
+                                 NULL);
+
+trigger:
+       /* We still have chance to get the valid dnode: for the object that is
+        * referenced by remote name entry, the object on the local MDT will be
+        * linked under the dir /REMOTE_PARENT_DIR with its FID string as name.
+        *
+        * During the OI scrub, if we cannot find the OI mapping, we may still
+        * have change to map the FID to local OID via lookup the dir
+        * /REMOTE_PARENT_DIR. */
+       if (!remote && !fid_is_on_ost(env, osd, fid)) {
+               osd_fid2str(name, fid, sizeof(info->oti_str));
+               rc = osd_zap_lookup(osd, osd->od_remote_parent_dir,
+                                   NULL, name, 8, 3, (void *)zde);
+               if (!rc) {
+                       oid = zde->lzd_reg.zde_dnode;
+                       osd_dnode_rele(obj->oo_dn);
+                       obj->oo_dn = NULL;
+                       remote = true;
+                       goto zget;
                }
-               if (rc != 0) {
-                       CERROR("%s: lookup "DFID"/%#llx failed: rc = %d\n",
-                              osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
-                       GOTO(out, rc);
+       }
+
+       /* The case someone triggered the OI scrub already. */
+       if (scrub->os_running) {
+               if (!rc) {
+                       LASSERT(remote);
+
+                       lu_object_set_agent_entry(l);
+                       osd_oii_insert(env, osd, fid, oid, false);
+               } else {
+                       rc = -EINPROGRESS;
                }
-               rc = osd_object_init0(env, obj);
-               if (rc != 0)
-                       GOTO(out, rc);
 
-               rc = osd_check_lma(env, obj);
-               if (rc != 0)
-                       GOTO(out, rc);
-       } else if (rc == -ENOENT) {
-               rc = 0;
+               GOTO(out, rc);
        }
-       LASSERT(osd_invariant(obj));
+
+       /* The case NOT allow to trigger OI scrub automatically. */
+       if (osd->od_scrub.os_auto_scrub_interval == AS_NEVER)
+               GOTO(out, rc);
+
+       /* It is me to trigger the OI scrub. */
+       rc1 = osd_scrub_start(env, osd, SS_CLEAR_DRYRUN |
+                             SS_CLEAR_FAILOUT | SS_AUTO_FULL);
+       CDEBUG_LIMIT(D_LFSCK | D_CONSOLE | D_WARNING,
+                    "%s: trigger OI scrub by RPC for "DFID"/%#llx: rc = %d\n",
+                    osd_name(osd), PFID(fid), oid, rc1);
+       if (!rc) {
+               LASSERT(remote);
+
+               lu_object_set_agent_entry(l);
+               if (!rc1)
+                       osd_oii_insert(env, osd, fid, oid, false);
+       } else {
+               if (!rc1)
+                       rc = -EINPROGRESS;
+               else
+                       rc = -EREMCHG;
+       }
+
+       GOTO(out, rc);
+
 out:
        RETURN(rc);
 }
@@ -567,11 +694,15 @@ out:
 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 {
        struct osd_object *obj = osd_obj(l);
+       struct lu_object_header *h = obj->oo_header;
 
        LASSERT(osd_invariant(obj));
 
        dt_object_fini(&obj->oo_dt);
+       /* obj doesn't contain an lu_object_header, so we don't need call_rcu */
        OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
+       if (unlikely(h))
+               lu_object_header_free(h);
 }
 
 static int
@@ -630,9 +761,11 @@ static int osd_declare_destroy(const struct lu_env *env, struct dt_object *dt,
        LASSERT(th != NULL);
        LASSERT(dt_object_exists(dt));
 
-       oh = container_of0(th, struct osd_thandle, ot_super);
+       oh = container_of(th, struct osd_thandle, ot_super);
        LASSERT(oh->ot_tx != NULL);
 
+       dmu_tx_mark_netfree(oh->ot_tx);
+
        /* declare that we'll remove object from fid-dnode mapping */
        zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0, &dn);
        osd_tx_hold_zap(oh->ot_tx, zapid, dn, FALSE, NULL);
@@ -661,6 +794,11 @@ static int osd_declare_destroy(const struct lu_env *env, struct dt_object *dt,
                osd_tx_hold_zap(oh->ot_tx, osd->od_unlinked->dn_object,
                                osd->od_unlinked, TRUE, NULL);
 
+       /* remove agent entry (if have) from remote parent */
+       if (lu_object_has_agent_entry(&obj->oo_dt.do_lu))
+               osd_tx_hold_zap(oh->ot_tx, osd->od_remote_parent_dir,
+                               NULL, FALSE, NULL);
+
        /* will help to find FID->ino when this object is being
         * added to PENDING/ */
        osd_idc_find_and_init(env, osd, obj);
@@ -689,20 +827,13 @@ static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
 
        LASSERT(obj->oo_dn != NULL);
 
-       oh = container_of0(th, struct osd_thandle, ot_super);
+       oh = container_of(th, struct osd_thandle, ot_super);
        LASSERT(oh != NULL);
        LASSERT(oh->ot_tx != NULL);
 
        /* remove obj ref from index dir (it depends) */
        zapid = osd_get_name_n_idx(env, osd, fid, buf,
                                   sizeof(info->oti_str), &zdn);
-       rc = osd_zap_remove(osd, zapid, zdn, buf, oh->ot_tx);
-       if (rc) {
-               CERROR("%s: zap_remove(%s) failed: rc = %d\n",
-                      osd->od_svname, buf, rc);
-               GOTO(out, rc);
-       }
-
        rc = osd_xattrs_destroy(env, obj, oh);
        if (rc) {
                CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
@@ -710,6 +841,12 @@ static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
                GOTO(out, rc);
        }
 
+       if (lu_object_has_agent_entry(&obj->oo_dt.do_lu)) {
+               rc = osd_delete_from_remote_parent(env, osd, obj, oh, true);
+               if (rc)
+                       GOTO(out, rc);
+       }
+
        oid = obj->oo_dn->dn_object;
        if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
                /* this may happen if the destroy wasn't declared
@@ -719,12 +856,12 @@ static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
                LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
                rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
                if (rc)
-                       CERROR("%s: failed to free %s %llu: rc = %d\n",
+                       CERROR("%s: failed to free %s/%#llx: rc = %d\n",
                               osd->od_svname, buf, oid, rc);
        } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
                rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
                if (rc)
-                       CERROR("%s: failed to free %s %llu: rc = %d\n",
+                       CERROR("%s: failed to free %s/%#llx: rc = %d\n",
                               osd->od_svname, buf, oid, rc);
        } else { /* asynchronous destroy */
                char *key = info->oti_key;
@@ -737,10 +874,21 @@ static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
                rc = osd_zap_add(osd, osd->od_unlinked->dn_object,
                                 osd->od_unlinked, key, 8, 1, &oid, oh->ot_tx);
                if (rc)
-                       CERROR("%s: zap_add_int() failed %s %llu: rc = %d\n",
+                       CERROR("%s: zap_add_int() failed %s/%#llx: rc = %d\n",
                               osd->od_svname, buf, oid, rc);
        }
 
+       /* Remove the OI mapping after the destroy to handle the race with
+        * OI scrub that may insert missed OI mapping during the interval. */
+       rc = osd_zap_remove(osd, zapid, zdn, buf, oh->ot_tx);
+       if (unlikely(rc == -ENOENT))
+               rc = 0;
+       if (rc)
+               CERROR("%s: zap_remove(%s) failed: rc = %d\n",
+                      osd->od_svname, buf, rc);
+
+       GOTO(out, rc);
+
 out:
        /* not needed in the cache anymore */
        set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
@@ -838,14 +986,14 @@ static int osd_write_locked(const struct lu_env *env, struct dt_object *dt)
        return rc;
 }
 
-static int osd_attr_get(const struct lu_env *env,
-                       struct dt_object *dt,
+static int osd_attr_get(const struct lu_env *env, struct dt_object *dt,
                        struct lu_attr *attr)
 {
-       struct osd_object       *obj = osd_dt_obj(dt);
-       uint64_t                 blocks;
-       uint32_t                 blksize;
-       int                      rc = 0;
+       struct osd_object *obj = osd_dt_obj(dt);
+       struct osd_device *osd = osd_obj2dev(obj);
+       uint64_t blocks;
+       uint32_t blksize;
+       int rc = 0;
 
        down_read(&obj->oo_guard);
 
@@ -860,9 +1008,20 @@ static int osd_attr_get(const struct lu_env *env,
 
        read_lock(&obj->oo_attr_lock);
        *attr = obj->oo_attr;
-       if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL)
+       if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL) {
+               attr->la_valid |= LA_FLAGS;
                attr->la_flags |= LUSTRE_ORPHAN_FL;
+       }
+       if (obj->oo_lma_flags & LUSTRE_ENCRYPT_FL) {
+               attr->la_valid |= LA_FLAGS;
+               attr->la_flags |= LUSTRE_ENCRYPT_FL;
+       }
        read_unlock(&obj->oo_attr_lock);
+       if (attr->la_valid & LA_FLAGS && attr->la_flags & LUSTRE_ORPHAN_FL)
+               CDEBUG(D_INFO, "%s: set orphan flag on "DFID" (%#llx/%#x)\n",
+                      osd_obj2dev(obj)->od_svname,
+                      PFID(lu_object_fid(&dt->do_lu)),
+                      attr->la_valid, obj->oo_lma_flags);
 
        /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
         * from within sa_object_size() can block on a mutex, so
@@ -870,8 +1029,11 @@ static int osd_attr_get(const struct lu_env *env,
        sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
        /* we do not control size of indices, so always calculate
         * it from number of blocks reported by DMU */
-       if (S_ISDIR(attr->la_mode))
+       if (S_ISDIR(attr->la_mode)) {
                attr->la_size = 512 * blocks;
+               rc = -zap_count(osd->od_os, obj->oo_dn->dn_object,
+                               &attr->la_dirent_count);
+       }
        /* Block size may be not set; suggest maximal I/O transfers. */
        if (blksize == 0)
                blksize = osd_spa_maxblocksize(
@@ -886,67 +1048,6 @@ out:
        return rc;
 }
 
-/* Simple wrapper on top of qsd API which implement quota transfer for osd
- * setattr needs. As a reminder, only the root user can change ownership of
- * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
-static inline int qsd_transfer(const struct lu_env *env,
-                              struct qsd_instance *qsd,
-                              struct lquota_trans *trans, int qtype,
-                              __u64 orig_id, __u64 new_id, __u64 bspace,
-                              struct lquota_id_info *qi)
-{
-       int     rc;
-
-       if (unlikely(qsd == NULL))
-               return 0;
-
-       LASSERT(qtype >= 0 && qtype < LL_MAXQUOTAS);
-       qi->lqi_type = qtype;
-
-       /* inode accounting */
-       qi->lqi_is_blk = false;
-
-       /* one more inode for the new owner ... */
-       qi->lqi_id.qid_uid = new_id;
-       qi->lqi_space      = 1;
-       rc = qsd_op_begin(env, qsd, trans, qi, NULL);
-       if (rc == -EDQUOT || rc == -EINPROGRESS)
-               rc = 0;
-       if (rc)
-               return rc;
-
-       /* and one less inode for the current id */
-       qi->lqi_id.qid_uid = orig_id;;
-       qi->lqi_space      = -1;
-       /* can't get EDQUOT when reducing usage */
-       rc = qsd_op_begin(env, qsd, trans, qi, NULL);
-       if (rc == -EINPROGRESS)
-               rc = 0;
-       if (rc)
-               return rc;
-
-       /* block accounting */
-       qi->lqi_is_blk = true;
-
-       /* more blocks for the new owner ... */
-       qi->lqi_id.qid_uid = new_id;
-       qi->lqi_space      = bspace;
-       rc = qsd_op_begin(env, qsd, trans, qi, NULL);
-       if (rc == -EDQUOT || rc == -EINPROGRESS)
-               rc = 0;
-       if (rc)
-               return rc;
-
-       /* and finally less blocks for the current owner */
-       qi->lqi_id.qid_uid = orig_id;
-       qi->lqi_space      = -bspace;
-       rc = qsd_op_begin(env, qsd, trans, qi, NULL);
-       /* can't get EDQUOT when reducing usage */
-       if (rc == -EINPROGRESS)
-               rc = 0;
-       return rc;
-}
-
 static int osd_declare_attr_set(const struct lu_env *env,
                                struct dt_object *dt,
                                const struct lu_attr *attr,
@@ -967,11 +1068,11 @@ static int osd_declare_attr_set(const struct lu_env *env,
        LASSERT(handle != NULL);
        LASSERT(osd_invariant(obj));
 
-       oh = container_of0(handle, struct osd_thandle, ot_super);
+       oh = container_of(handle, struct osd_thandle, ot_super);
 
        down_read(&obj->oo_guard);
        if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
-               GOTO(out, rc = 0);
+               GOTO(out_sem, rc = 0);
 
        LASSERT(obj->oo_sa_hdl != NULL);
        LASSERT(oh->ot_tx != NULL);
@@ -993,7 +1094,7 @@ static int osd_declare_attr_set(const struct lu_env *env,
        if (!found)
                dmu_tx_hold_bonus(oh->ot_tx, obj->oo_dn->dn_object);
        if (oh->ot_tx->tx_err != 0)
-               GOTO(out, rc = -oh->ot_tx->tx_err);
+               GOTO(out_sem, rc = -oh->ot_tx->tx_err);
 
        if (attr && attr->la_valid & LA_FLAGS) {
                /* LMA is usually a part of bonus, no need to declare
@@ -1002,64 +1103,76 @@ static int osd_declare_attr_set(const struct lu_env *env,
 
        if (attr && (attr->la_valid & (LA_UID | LA_GID | LA_PROJID))) {
                sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
-               bspace = toqb(bspace * blksize);
+               bspace = toqb(bspace * 512);
+
+               CDEBUG(D_QUOTA,
+                      "%s: enforce quota on UID %u, GID %u, the quota space is %lld (%u)\n",
+                      osd->od_svname,
+                      attr->la_uid, attr->la_gid, bspace, blksize);
        }
+       /* to preserve locking order - qsd_transfer() may need to flush
+        * currently running transaction when we're out of quota.
+        */
+       up_read(&obj->oo_guard);
 
-       if (attr && attr->la_valid & LA_UID) {
-               /* quota enforcement for user */
-               if (attr->la_uid != obj->oo_attr.la_uid) {
-                       rc = qsd_transfer(env, osd->od_quota_slave,
-                                         &oh->ot_quota_trans, USRQUOTA,
-                                         obj->oo_attr.la_uid, attr->la_uid,
-                                         bspace, &info->oti_qi);
-                       if (rc)
-                               GOTO(out, rc);
-               }
+       /* quota enforcement for user */
+       if (attr && attr->la_valid & LA_UID &&
+           attr->la_uid != obj->oo_attr.la_uid) {
+               rc = qsd_transfer(env, osd_def_qsd(osd),
+                                 &oh->ot_quota_trans, USRQUOTA,
+                                 obj->oo_attr.la_uid, attr->la_uid,
+                                 bspace, &info->oti_qi);
+               if (rc)
+                       GOTO(out, rc);
        }
-       if (attr && attr->la_valid & LA_GID) {
-               /* quota enforcement for group */
-               if (attr->la_gid != obj->oo_attr.la_gid) {
-                       rc = qsd_transfer(env, osd->od_quota_slave,
-                                         &oh->ot_quota_trans, GRPQUOTA,
-                                         obj->oo_attr.la_gid, attr->la_gid,
-                                         bspace, &info->oti_qi);
-                       if (rc)
-                               GOTO(out, rc);
-               }
+
+       /* quota enforcement for group */
+       if (attr && attr->la_valid & LA_GID &&
+           attr->la_gid != obj->oo_attr.la_gid) {
+               rc = qsd_transfer(env, osd_def_qsd(osd),
+                                 &oh->ot_quota_trans, GRPQUOTA,
+                                 obj->oo_attr.la_gid, attr->la_gid,
+                                 bspace, &info->oti_qi);
+               if (rc)
+                       GOTO(out, rc);
        }
 #ifdef ZFS_PROJINHERIT
-       if (attr && attr->la_valid & LA_PROJID) {
+       /* quota enforcement for project */
+       if (attr && attr->la_valid & LA_PROJID &&
+           attr->la_projid != obj->oo_attr.la_projid) {
                if (!osd->od_projectused_dn)
                        GOTO(out, rc = -EOPNOTSUPP);
 
-               /* Usually, if project quota is upgradable for the device,
-                * then the upgrade will be done before or when mount the
-                * device. So when we come here, this project should have
-                * project ID attribute already (that is zero by default).
-                * Otherwise, there was something wrong during the former
-                * upgrade, let's return failure to report that.
+               /* Usually, if project quota is upgradable for the
+                * device, then the upgrade will be done before or when
+                * mount the device. So when we come here, this project
+                * should have project ID attribute already (that is
+                * zero by default).  Otherwise, there was something
+                * wrong during the former upgrade, let's return failure
+                * to report that.
                 *
-                * Please note that, different from other attributes, you
-                * can NOT simply set the project ID attribute under such
-                * case, because adding (NOT change) project ID attribute
-                * needs to change the object's attribute layout to match
-                * zfs backend quota accounting requirement. */
+                * Please note that, different from other attributes,
+                * you can NOT simply set the project ID attribute under
+                * such case, because adding (NOT change) project ID
+                * attribute needs to change the object's attribute
+                * layout to match zfs backend quota accounting
+                * requirement.
+                */
                if (unlikely(!obj->oo_with_projid))
                        GOTO(out, rc = -ENXIO);
 
-               /* quota enforcement for project */
-               if (attr->la_projid != obj->oo_attr.la_projid) {
-                       rc = qsd_transfer(env, osd->od_quota_slave,
-                                         &oh->ot_quota_trans, PRJQUOTA,
-                                         obj->oo_attr.la_projid,
-                                         attr->la_projid, bspace,
-                                         &info->oti_qi);
-                       if (rc)
-                               GOTO(out, rc);
-               }
+               rc = qsd_transfer(env, osd_def_qsd(osd),
+                                 &oh->ot_quota_trans, PRJQUOTA,
+                                 obj->oo_attr.la_projid,
+                                 attr->la_projid, bspace,
+                                 &info->oti_qi);
+               if (rc)
+                       GOTO(out, rc);
        }
 #endif
 out:
+       RETURN(rc);
+out_sem:
        up_read(&obj->oo_guard);
        RETURN(rc);
 }
@@ -1094,11 +1207,31 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
        LASSERT(osd_invariant(obj));
        LASSERT(obj->oo_sa_hdl);
 
-       oh = container_of0(handle, struct osd_thandle, ot_super);
+       oh = container_of(handle, struct osd_thandle, ot_super);
        /* Assert that the transaction has been assigned to a
           transaction group. */
        LASSERT(oh->ot_tx->tx_txg != 0);
 
+       if (OBD_FAIL_CHECK(OBD_FAIL_OSD_FID_MAPPING) && !osd->od_is_ost) {
+               struct zpl_direntry *zde = &info->oti_zde.lzd_reg;
+               char *buf = info->oti_str;
+               dnode_t *zdn = NULL;
+               uint64_t zapid;
+
+               zapid = osd_get_name_n_idx(env, osd, lu_object_fid(&dt->do_lu),
+                                          buf, sizeof(info->oti_str), &zdn);
+               rc = osd_zap_lookup(osd, zapid, zdn, buf, 8,
+                                   sizeof(*zde) / 8, zde);
+               if (!rc) {
+                       zde->zde_dnode -= 1;
+                       rc = -zap_update(osd->od_os, zapid, buf, 8,
+                                        sizeof(*zde) / 8, zde, oh->ot_tx);
+               }
+               if (rc > 0)
+                       rc = 0;
+               GOTO(out, rc);
+       }
+
        /* Only allow set size for regular file */
        if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
                valid &= ~(LA_SIZE | LA_BLOCKS);
@@ -1118,16 +1251,22 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
        if (valid & LA_FLAGS) {
                struct lustre_mdt_attrs *lma;
                struct lu_buf buf;
+               int size = 0;
 
                if (la->la_flags & LUSTRE_LMA_FL_MASKS) {
                        LASSERT(!obj->oo_pfid_in_lma);
-                       CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
+                       BUILD_BUG_ON(sizeof(info->oti_buf) < sizeof(*lma));
                        lma = (struct lustre_mdt_attrs *)&info->oti_buf;
                        buf.lb_buf = lma;
                        buf.lb_len = sizeof(info->oti_buf);
-                       rc = osd_xattr_get(env, &obj->oo_dt, &buf,
-                                          XATTR_NAME_LMA);
-                       if (rc > 0) {
+
+                       /* Please do NOT call osd_xattr_get() directly, that
+                        * will cause recursive down_read() on oo_guard. */
+                       rc = osd_xattr_get_internal(env, obj, &buf,
+                                                   XATTR_NAME_LMA, &size);
+                       if (!rc && unlikely(size < sizeof(*lma))) {
+                               rc = -EINVAL;
+                       } else if (!rc) {
                                lma->lma_incompat =
                                        le32_to_cpu(lma->lma_incompat);
                                lma->lma_incompat |=
@@ -1145,6 +1284,9 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
                                CWARN("%s: failed to set LMA flags: rc = %d\n",
                                       osd->od_svname, rc);
                                GOTO(out, rc);
+                       } else {
+                               obj->oo_lma_flags =
+                                       la->la_flags & LUSTRE_LMA_FL_MASKS;
                        }
                }
        }
@@ -1154,18 +1296,15 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
 
        if (valid & LA_PROJID) {
 #ifdef ZFS_PROJINHERIT
-               /* osd_declare_attr_set() must be called firstly.
-                * If osd::od_projectused_dn is not set, then we
-                * can not arrive at here. */
-               LASSERT(osd->od_projectused_dn);
-               LASSERT(obj->oo_with_projid);
+               if (osd->od_projectused_dn) {
+                       LASSERT(obj->oo_with_projid);
 
-               osa->projid = obj->oo_attr.la_projid = la->la_projid;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PROJID(osd), NULL,
-                                &osa->projid, 8);
-#else
-               valid &= ~LA_PROJID;
+                       osa->projid = obj->oo_attr.la_projid = la->la_projid;
+                       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PROJID(osd), NULL,
+                                        &osa->projid, 8);
+               } else
 #endif
+                       valid &= ~LA_PROJID;
        }
 
        if (valid & LA_ATIME) {
@@ -1212,7 +1351,7 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
                 * copy */
                obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
 #ifdef ZFS_PROJINHERIT
-               if (obj->oo_with_projid)
+               if (obj->oo_with_projid && osd->od_projectused_dn)
                        osa->flags |= ZFS_PROJID;
 #endif
                SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
@@ -1291,7 +1430,7 @@ static int osd_declare_create(const struct lu_env *env, struct dt_object *dt,
        }
 
        LASSERT(handle != NULL);
-       oh = container_of0(handle, struct osd_thandle, ot_super);
+       oh = container_of(handle, struct osd_thandle, ot_super);
        LASSERT(oh->ot_tx != NULL);
 
        /* this is the minimum set of EAs on every Lustre object */
@@ -1302,6 +1441,7 @@ static int osd_declare_create(const struct lu_env *env, struct dt_object *dt,
        switch (dof->dof_type) {
                case DFT_DIR:
                        dt->do_index_ops = &osd_dir_ops;
+                       /* fallthrough */
                case DFT_INDEX:
                        /* for zap create */
                        dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, FALSE, NULL);
@@ -1337,13 +1477,12 @@ int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
                    struct lu_attr *la, uint64_t parent,
                    nvlist_t *xattr)
 {
-       sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
-       struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
-       uint64_t         gen;
-       uint64_t         crtime[2];
-       timestruc_t      now;
-       int              cnt;
-       int              rc;
+       sa_bulk_attr_t *bulk = osd_oti_get(env)->oti_attr_bulk;
+       struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
+       uint64_t gen;
+       inode_timespec_t now;
+       int cnt;
+       int rc;
        char *dxattr = NULL;
        size_t sa_size;
 
@@ -1352,7 +1491,7 @@ int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
 
        gen = dmu_tx_get_txg(tx);
        gethrestime(&now);
-       ZFS_TIME_ENCODE(&now, crtime);
+       ZFS_TIME_ENCODE(&now, osa->btime);
 
        osa->atime[0] = la->la_atime;
        osa->ctime[0] = la->la_ctime;
@@ -1402,7 +1541,7 @@ int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, osa->btime, 16);
        SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
 #ifdef ZFS_PROJINHERIT
        if (osd->od_projectused_dn)
@@ -1434,8 +1573,8 @@ int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
        return rc;
 }
 
-static int osd_find_new_dnode(const struct lu_env *env, dmu_tx_t *tx,
-                             uint64_t oid, dnode_t **dnp)
+int osd_find_new_dnode(const struct lu_env *env, dmu_tx_t *tx,
+                      uint64_t oid, dnode_t **dnp)
 {
        dmu_tx_hold_t *txh;
        int rc = 0;
@@ -1461,11 +1600,12 @@ static int osd_find_new_dnode(const struct lu_env *env, dmu_tx_t *tx,
                LASSERT(db);
                LASSERT(dn->dn_handle);
                DB_DNODE_ENTER(db);
-               if (refcount_add(&db->db_holds, osd_obj_tag) == 1) {
-                       refcount_add(&dn->dn_holds, tag);
+               if (zfs_refcount_add(&db->db_holds, osd_obj_tag) == 1) {
+                       zfs_refcount_add(&dn->dn_holds, osd_obj_tag);
                        atomic_inc_32(&dn->dn_dbufs_count);
                }
                *dnp = dn;
+               DB_DNODE_EXIT(db);
                dbuf_read(db, NULL, DB_RF_MUST_SUCCEED | DB_RF_NOPREFETCH);
                break;
        }
@@ -1633,6 +1773,14 @@ static dnode_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
                               osd->od_svname, rc);
                        return ERR_PTR(rc);
                }
+       } else if ((fid_is_llog(fid))) {
+               rc = -dmu_object_set_blocksize(osd->od_os, dn->dn_object,
+                                              LLOG_MIN_CHUNK_SIZE, 0, oh->ot_tx);
+               if (unlikely(rc)) {
+                       CERROR("%s: can't change blocksize: %d\n",
+                              osd->od_svname, rc);
+                       return ERR_PTR(rc);
+               }
        }
 
        return dn;
@@ -1720,6 +1868,7 @@ static int osd_create(const struct lu_env *env, struct dt_object *dt,
        dnode_t *dn = NULL, *zdn = NULL;
        uint64_t                 zapid, parent = 0;
        int                      rc;
+       __u32 compat = 0;
 
        ENTRY;
 
@@ -1737,7 +1886,7 @@ static int osd_create(const struct lu_env *env, struct dt_object *dt,
        LASSERT(dof != NULL);
 
        LASSERT(th != NULL);
-       oh = container_of0(th, struct osd_thandle, ot_super);
+       oh = container_of(th, struct osd_thandle, ot_super);
 
        LASSERT(obj->oo_dn == NULL);
 
@@ -1749,6 +1898,8 @@ static int osd_create(const struct lu_env *env, struct dt_object *dt,
 
        /* we may fix some attributes, better do not change the source */
        obj->oo_attr = *attr;
+       obj->oo_attr.la_size = 0;
+       obj->oo_attr.la_nlink = 0;
        obj->oo_attr.la_valid |= LA_SIZE | LA_NLINK | LA_TYPE;
 
 #ifdef ZFS_PROJINHERIT
@@ -1768,13 +1919,22 @@ static int osd_create(const struct lu_env *env, struct dt_object *dt,
 
        zde->zde_pad = 0;
        zde->zde_dnode = dn->dn_object;
-       zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
+       zde->zde_type = S_DT(attr->la_mode & S_IFMT);
 
        zapid = osd_get_name_n_idx(env, osd, fid, buf,
                                   sizeof(info->oti_str), &zdn);
+       if (CFS_FAIL_CHECK(OBD_FAIL_OSD_NO_OI_ENTRY) ||
+           (osd->od_is_ost && OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_NO_ENTRY)))
+               goto skip_add;
+
+       if (osd->od_is_ost && OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_INVALID_ENTRY))
+               zde->zde_dnode++;
+
        rc = osd_zap_add(osd, zapid, zdn, buf, 8, 1, zde, oh->ot_tx);
        if (rc)
                GOTO(out, rc);
+
+skip_add:
        obj->oo_dn = dn;
        /* Now add in all of the "SA" attributes */
        rc = osd_sa_handle_get(obj);
@@ -1786,7 +1946,9 @@ static int osd_create(const struct lu_env *env, struct dt_object *dt,
                GOTO(out, rc);
 
        /* initialize LMA */
-       lustre_lma_init(lma, fid, 0, 0);
+       if (fid_is_idif(fid) || (fid_is_norm(fid) && osd->od_is_ost))
+               compat |= LMAC_FID_ON_OST;
+       lustre_lma_init(lma, fid, compat, 0);
        lustre_lma_swab(lma);
        rc = -nvlist_add_byte_array(obj->oo_sa_xattr, XATTR_NAME_LMA,
                                    (uchar_t *)lma, sizeof(*lma));
@@ -1823,6 +1985,7 @@ out:
 static int osd_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
                               struct thandle *th)
 {
+       osd_idc_find_and_init(env, osd_dev(dt->do_lu.lo_dev), osd_dt_obj(dt));
        return osd_declare_attr_set(env, dt, NULL, th);
 }
 
@@ -1847,7 +2010,7 @@ static int osd_ref_add(const struct lu_env *env, struct dt_object *dt,
        LASSERT(osd_invariant(obj));
        LASSERT(obj->oo_sa_hdl != NULL);
 
-       oh = container_of0(handle, struct osd_thandle, ot_super);
+       oh = container_of(handle, struct osd_thandle, ot_super);
 
        write_lock(&obj->oo_attr_lock);
        nlink = ++obj->oo_attr.la_nlink;
@@ -1863,6 +2026,7 @@ out:
 static int osd_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
                               struct thandle *handle)
 {
+       osd_idc_find_and_init(env, osd_dev(dt->do_lu.lo_dev), osd_dt_obj(dt));
        return osd_declare_attr_set(env, dt, NULL, handle);
 }
 
@@ -1888,7 +2052,7 @@ static int osd_ref_del(const struct lu_env *env, struct dt_object *dt,
        LASSERT(osd_invariant(obj));
        LASSERT(obj->oo_sa_hdl != NULL);
 
-       oh = container_of0(handle, struct osd_thandle, ot_super);
+       oh = container_of(handle, struct osd_thandle, ot_super);
        LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
 
        write_lock(&obj->oo_attr_lock);
@@ -1906,14 +2070,20 @@ static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
                           __u64 start, __u64 end)
 {
        struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
+       uint64_t txg = 0;
        ENTRY;
 
-       /* XXX: no other option than syncing the whole filesystem until we
-        * support ZIL.  If the object tracked the txg that it was last
-        * modified in, it could pass that txg here instead of "0".  Maybe
-        * the changes are already committed, so no wait is needed at all? */
-       if (!osd->od_dt_dev.dd_rdonly)
-               txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
+       if (osd->od_dt_dev.dd_rdonly)
+               RETURN(0);
+
+       txg = osd_db_dirty_txg(osd_dt_obj(dt)->oo_dn->dn_dbuf);
+       if (txg) {
+               /* the object is dirty or being synced */
+               if (osd_object_sync_delay_us < 0)
+                       txg_wait_synced(dmu_objset_pool(osd->od_os), txg);
+               else
+                       udelay(osd_object_sync_delay_us);
+       }
 
        RETURN(0);
 }
@@ -1923,7 +2093,12 @@ static int osd_invalidate(const struct lu_env *env, struct dt_object *dt)
        return 0;
 }
 
-static struct dt_object_operations osd_obj_ops = {
+static bool osd_check_stale(struct dt_object *dt)
+{
+       return false;
+}
+
+static const struct dt_object_operations osd_obj_ops = {
        .do_read_lock           = osd_read_lock,
        .do_write_lock          = osd_write_lock,
        .do_read_unlock         = osd_read_unlock,
@@ -1950,9 +2125,10 @@ static struct dt_object_operations osd_obj_ops = {
        .do_xattr_list          = osd_xattr_list,
        .do_object_sync         = osd_object_sync,
        .do_invalidate          = osd_invalidate,
+       .do_check_stale         = osd_check_stale,
 };
 
-static struct lu_object_operations osd_lu_obj_ops = {
+static const struct lu_object_operations osd_lu_obj_ops = {
        .loo_object_init        = osd_object_init,
        .loo_object_delete      = osd_object_delete,
        .loo_object_release     = osd_object_release,
@@ -1969,7 +2145,11 @@ static int osd_otable_it_attr_get(const struct lu_env *env,
        return 0;
 }
 
-static struct dt_object_operations osd_obj_otable_it_ops = {
+static const struct dt_object_operations osd_obj_otable_it_ops = {
        .do_attr_get            = osd_otable_it_attr_get,
        .do_index_try           = osd_index_try,
 };
+
+module_param(osd_object_sync_delay_us, int, 0644);
+MODULE_PARM_DESC(osd_object_sync_delay_us,
+                "If zero or larger delay N usec instead of doing object sync");