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LU-13974 llog: check stale osp object
[fs/lustre-release.git] / lustre / osp / osp_object.c
index 84dda71..bd47f5b 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2007, 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.
  */
 /*
  * lustre/osp/osp_object.c
@@ -126,11 +126,28 @@ static inline __u32 osp_dev2node(struct osp_device *osp)
        return osp->opd_storage->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
 }
 
+static inline const char *osp_dto2name(struct osp_object *obj)
+{
+       return obj->opo_obj.do_lu.lo_dev->ld_obd->obd_name;
+}
+
 static inline bool is_ost_obj(struct lu_object *lo)
 {
        return !lu2osp_dev(lo->lo_dev)->opd_connect_mdt;
 }
 
+static inline void __osp_oac_xattr_assignment(struct osp_object *obj,
+                                             struct osp_xattr_entry *oxe,
+                                             const struct lu_buf *buf)
+{
+       if (buf->lb_len > 0)
+               memcpy(oxe->oxe_value, buf->lb_buf, buf->lb_len);
+
+       oxe->oxe_vallen = buf->lb_len;
+       oxe->oxe_exist = 1;
+       oxe->oxe_ready = 1;
+}
+
 /**
  * Assign FID to the OST object.
  *
@@ -155,6 +172,24 @@ static void osp_object_assign_fid(const struct lu_env *env,
        lu_object_assign_fid(env, &o->opo_obj.do_lu, &osi->osi_fid);
 }
 
+#define OXE_DEFAULT_LEN        16
+
+/**
+ * Release reference from the OSP object extended attribute entry.
+ *
+ * If it is the last reference, then free the entry.
+ *
+ * \param[in] oxe      pointer to the OSP object extended attribute entry.
+ */
+static inline void osp_oac_xattr_put(struct osp_xattr_entry *oxe)
+{
+       if (atomic_dec_and_test(&oxe->oxe_ref)) {
+               LASSERT(list_empty(&oxe->oxe_list));
+
+               OBD_FREE_LARGE(oxe, oxe->oxe_buflen);
+       }
+}
+
 /**
  * Find the named extended attribute in the OSP object attributes cache.
  *
@@ -205,7 +240,7 @@ static struct osp_xattr_entry *osp_oac_xattr_find(struct osp_object *obj,
 
        spin_lock(&obj->opo_lock);
        oxe = osp_oac_xattr_find_locked(obj, name, strlen(name));
-       if (oxe != NULL) {
+       if (oxe) {
                if (unlink)
                        list_del_init(&oxe->oxe_list);
                else
@@ -235,16 +270,17 @@ static struct osp_xattr_entry *
 osp_oac_xattr_find_or_add(struct osp_object *obj, const char *name, size_t len)
 {
        struct osp_xattr_entry *oxe;
-       struct osp_xattr_entry *tmp     = NULL;
-       size_t                  namelen = strlen(name);
-       size_t                  size    = sizeof(*oxe) + namelen + 1 + len;
+       struct osp_xattr_entry *tmp = NULL;
+       size_t namelen = strlen(name);
+       size_t size = sizeof(*oxe) + namelen + 1 +
+                     (len ? len : OXE_DEFAULT_LEN);
 
        oxe = osp_oac_xattr_find(obj, name, false);
-       if (oxe != NULL)
+       if (oxe)
                return oxe;
 
-       OBD_ALLOC(oxe, size);
-       if (unlikely(oxe == NULL))
+       OBD_ALLOC_LARGE(oxe, size);
+       if (unlikely(!oxe))
                return NULL;
 
        INIT_LIST_HEAD(&oxe->oxe_list);
@@ -257,14 +293,14 @@ osp_oac_xattr_find_or_add(struct osp_object *obj, const char *name, size_t len)
 
        spin_lock(&obj->opo_lock);
        tmp = osp_oac_xattr_find_locked(obj, name, namelen);
-       if (tmp == NULL)
+       if (!tmp)
                list_add_tail(&oxe->oxe_list, &obj->opo_xattr_list);
        else
                atomic_inc(&tmp->oxe_ref);
        spin_unlock(&obj->opo_lock);
 
-       if (tmp != NULL) {
-               OBD_FREE(oxe, size);
+       if (tmp) {
+               OBD_FREE_LARGE(oxe, size);
                oxe = tmp;
        }
 
@@ -272,67 +308,86 @@ osp_oac_xattr_find_or_add(struct osp_object *obj, const char *name, size_t len)
 }
 
 /**
- * Add the given extended attribute to the OSP object attributes cache.
+ * Assign the cached OST-object's EA with the given value.
  *
- * If there is an old extended attributed entry with the same name,
- * remove it from the cache and return it via the parameter \a poxe.
+ * If the current EA entry in cache has not enough space to hold the new
+ * value, remove it, create a new one, then assign with the given value.
  *
  * \param[in] obj      pointer to the OSP object
- * \param[in,out] poxe double pointer to the OSP object extended attribute
- *                     entry: the new extended attribute entry is transferred
- *                     via such pointer target, and if old the extended
- *                     attribute entry exists, then it will be returned back
- *                     via such pointer target.
- * \param[in] len      the length of the (new) extended attribute value
- *
- * \retval             pointer to the new extended attribute entry
- * \retval             NULL for failure cases.
+ * \param[in] oxe      pointer to the cached EA entry to be assigned
+ * \param[in] buf      pointer to the buffer with new EA value
+ *
+ * \retval             pointer to the new created EA entry in cache if
+ *                     current entry is not big enough; otherwise, the
+ *                     input 'oxe' will be returned.
  */
 static struct osp_xattr_entry *
-osp_oac_xattr_replace(struct osp_object *obj,
-                     struct osp_xattr_entry **poxe, size_t len)
+osp_oac_xattr_assignment(struct osp_object *obj, struct osp_xattr_entry *oxe,
+                        const struct lu_buf *buf)
 {
-       struct osp_xattr_entry *oxe;
-       size_t                  namelen = (*poxe)->oxe_namelen;
-       size_t                  size    = sizeof(*oxe) + namelen + 1 + len;
-
-       OBD_ALLOC(oxe, size);
-       if (unlikely(oxe == NULL))
-               return NULL;
-
-       INIT_LIST_HEAD(&oxe->oxe_list);
-       oxe->oxe_buflen = size;
-       oxe->oxe_namelen = namelen;
-       memcpy(oxe->oxe_buf, (*poxe)->oxe_buf, namelen);
-       oxe->oxe_value = oxe->oxe_buf + namelen + 1;
-       /* One ref is for the caller, the other is for the entry on the list. */
-       atomic_set(&oxe->oxe_ref, 2);
+       struct osp_xattr_entry *new = NULL;
+       struct osp_xattr_entry *old = NULL;
+       int namelen = oxe->oxe_namelen;
+       size_t size = sizeof(*oxe) + namelen + 1 + buf->lb_len;
+       bool unlink_only = false;
+
+       if (oxe->oxe_buflen < size) {
+               OBD_ALLOC_LARGE(new, size);
+               if (likely(new)) {
+                       INIT_LIST_HEAD(&new->oxe_list);
+                       new->oxe_buflen = size;
+                       new->oxe_namelen = namelen;
+                       memcpy(new->oxe_buf, oxe->oxe_buf, namelen);
+                       new->oxe_value = new->oxe_buf + namelen + 1;
+                       /* One ref is for the caller,
+                        * the other is for the entry on the list. */
+                       atomic_set(&new->oxe_ref, 2);
+                       __osp_oac_xattr_assignment(obj, new, buf);
+               } else {
+                       unlink_only = true;
+                       CWARN("%s: cannot update cached xattr %.*s of "DFID"\n",
+                             osp_dto2name(obj), namelen, oxe->oxe_buf,
+                             PFID(lu_object_fid(&obj->opo_obj.do_lu)));
+               }
+       }
 
        spin_lock(&obj->opo_lock);
-       *poxe = osp_oac_xattr_find_locked(obj, oxe->oxe_buf, namelen);
-       LASSERT(*poxe != NULL);
+       old = osp_oac_xattr_find_locked(obj, oxe->oxe_buf, namelen);
+       if (likely(old)) {
+               if (new) {
+                       /* Unlink the 'old'. */
+                       list_del_init(&old->oxe_list);
 
-       list_del_init(&(*poxe)->oxe_list);
-       list_add_tail(&oxe->oxe_list, &obj->opo_xattr_list);
-       spin_unlock(&obj->opo_lock);
+                       /* Drop the ref for 'old' on list. */
+                       osp_oac_xattr_put(old);
 
-       return oxe;
-}
+                       /* Drop the ref for current using. */
+                       osp_oac_xattr_put(oxe);
+                       oxe = new;
 
-/**
- * Release reference from the OSP object extended attribute entry.
- *
- * If it is the last reference, then free the entry.
- *
- * \param[in] oxe      pointer to the OSP object extended attribute entry.
- */
-static inline void osp_oac_xattr_put(struct osp_xattr_entry *oxe)
-{
-       if (atomic_dec_and_test(&oxe->oxe_ref)) {
-               LASSERT(list_empty(&oxe->oxe_list));
+                       /* Insert 'new' into list. */
+                       list_add_tail(&new->oxe_list, &obj->opo_xattr_list);
+               } else if (unlink_only) {
+                       /* Unlink the 'old'. */
+                       list_del_init(&old->oxe_list);
+
+                       /* Drop the ref for 'old' on list. */
+                       osp_oac_xattr_put(old);
+               } else {
+                       __osp_oac_xattr_assignment(obj, oxe, buf);
+               }
+       } else if (new) {
+               /* Drop the ref for current using. */
+               osp_oac_xattr_put(oxe);
+               oxe = new;
 
-               OBD_FREE(oxe, oxe->oxe_buflen);
+               /* Someone unlinked the 'old' by race,
+                * insert the 'new' one into list. */
+               list_add_tail(&new->oxe_list, &obj->opo_xattr_list);
        }
+       spin_unlock(&obj->opo_lock);
+
+       return oxe;
 }
 
 /**
@@ -376,11 +431,13 @@ static int osp_get_attr_from_reply(const struct lu_env *env,
                lustre_swab_obdo(wobdo);
 
        lustre_get_wire_obdo(NULL, lobdo, wobdo);
-       spin_lock(&obj->opo_lock);
-       la_from_obdo(&obj->opo_attr, lobdo, lobdo->o_valid);
-       if (attr != NULL)
-               *attr = obj->opo_attr;
-       spin_unlock(&obj->opo_lock);
+       if (obj) {
+               spin_lock(&obj->opo_lock);
+               la_from_obdo(&obj->opo_attr, lobdo, lobdo->o_valid);
+               spin_unlock(&obj->opo_lock);
+       }
+       if (attr)
+               la_from_obdo(attr, lobdo, lobdo->o_valid);
 
        return 0;
 }
@@ -487,7 +544,7 @@ int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
        struct osp_update_request       *update;
        struct object_update_reply      *reply;
        struct ptlrpc_request           *req = NULL;
-       int                             rc = 0;
+       int                             invalidated, cache = 0, rc = 0;
        ENTRY;
 
        if (is_ost_obj(&dt->do_lu) && obj->opo_non_exist)
@@ -506,21 +563,31 @@ int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
        if (IS_ERR(update))
                RETURN(PTR_ERR(update));
 
-       rc = osp_update_rpc_pack(env, attr_get, update, OUT_ATTR_GET,
+       rc = OSP_UPDATE_RPC_PACK(env, out_attr_get_pack, update,
                                 lu_object_fid(&dt->do_lu));
        if (rc != 0) {
                CERROR("%s: Insert update error "DFID": rc = %d\n",
                       dev->dd_lu_dev.ld_obd->obd_name,
                       PFID(lu_object_fid(&dt->do_lu)), rc);
 
-               GOTO(out, rc);
+               GOTO(out_req, rc);
        }
 
+       invalidated = atomic_read(&obj->opo_invalidate_seq);
+
        rc = osp_remote_sync(env, osp, update, &req);
+
+       down_read(&obj->opo_invalidate_sem);
+       if (invalidated == atomic_read(&obj->opo_invalidate_seq)) {
+               /* no invalited has came so far, we can cache the attrs */
+               cache = 1;
+       }
+
        if (rc != 0) {
                if (rc == -ENOENT) {
                        osp2lu_obj(obj)->lo_header->loh_attr &= ~LOHA_EXISTS;
-                       obj->opo_non_exist = 1;
+                       if (cache)
+                               obj->opo_non_exist = 1;
                } else {
                        CERROR("%s:osp_attr_get update error "DFID": rc = %d\n",
                               dev->dd_lu_dev.ld_obd->obd_name,
@@ -538,17 +605,22 @@ int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
        if (reply == NULL || reply->ourp_magic != UPDATE_REPLY_MAGIC)
                GOTO(out, rc = -EPROTO);
 
-       rc = osp_get_attr_from_reply(env, reply, req, attr, obj, 0);
+       rc = osp_get_attr_from_reply(env, reply, req, attr,
+                                    cache ? obj : NULL, 0);
        if (rc != 0)
                GOTO(out, rc);
 
        spin_lock(&obj->opo_lock);
-       obj->opo_stale = 0;
+       if (cache)
+               obj->opo_stale = 0;
        spin_unlock(&obj->opo_lock);
 
        GOTO(out, rc);
 
 out:
+       up_read(&obj->opo_invalidate_sem);
+
+out_req:
        if (req != NULL)
                ptlrpc_req_finished(req);
 
@@ -612,10 +684,10 @@ static int osp_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
                        RETURN(rc);
        }
 
-       if (!(attr->la_valid & (LA_UID | LA_GID)))
+       if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
                RETURN(0);
 
-       /* track all UID/GID changes via llog */
+       /* track all UID/GID, projid, and layout version changes via llog */
        rc = osp_sync_declare_add(env, o, MDS_SETATTR64_REC, th);
 
        return 0;
@@ -649,13 +721,41 @@ static int osp_attr_set(const struct lu_env *env, struct dt_object *dt,
        int                      rc = 0;
        ENTRY;
 
-       /* we're interested in uid/gid changes only */
-       if (!(attr->la_valid & (LA_UID | LA_GID)))
+       /* we're interested in uid/gid/projid/layout version changes only */
+       if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
                RETURN(0);
 
        if (!is_only_remote_trans(th)) {
-               rc = osp_sync_add(env, o, MDS_SETATTR64_REC, th, attr);
-               /* XXX: send new uid/gid to OST ASAP? */
+               if (attr->la_flags & LUSTRE_SET_SYNC_FL) {
+                       struct ptlrpc_request *req = NULL;
+                       struct osp_update_request *update = NULL;
+                       struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+
+                       update = osp_update_request_create(&osp->opd_dt_dev);
+                       if (IS_ERR(update))
+                               RETURN(PTR_ERR(update));
+
+                       rc = OSP_UPDATE_RPC_PACK(env, out_attr_set_pack, update,
+                                                lu_object_fid(&dt->do_lu),
+                                                attr);
+                       if (rc != 0) {
+                               CERROR("%s: update error "DFID": rc = %d\n",
+                                      osp->opd_obd->obd_name,
+                                      PFID(lu_object_fid(&dt->do_lu)), rc);
+
+                               osp_update_request_destroy(env, update);
+                               RETURN(rc);
+                       }
+
+                       rc = osp_remote_sync(env, osp, update, &req);
+                       if (req != NULL)
+                               ptlrpc_req_finished(req);
+
+                       osp_update_request_destroy(env, update);
+               } else {
+                       rc = osp_sync_add(env, o, MDS_SETATTR64_REC, th, attr);
+                       /* XXX: send new uid/gid to OST ASAP? */
+               }
        } else {
                struct lu_attr  *la;
 
@@ -680,6 +780,10 @@ static int osp_attr_set(const struct lu_env *env, struct dt_object *dt,
                        la->la_gid = attr->la_gid;
                        la->la_valid |= LA_GID;
                }
+               if (attr->la_valid & LA_PROJID) {
+                       la->la_projid = attr->la_projid;
+                       la->la_valid |= LA_PROJID;
+               }
                spin_unlock(&o->opo_lock);
        }
 
@@ -709,39 +813,38 @@ static int osp_xattr_get_interpterer(const struct lu_env *env,
                                     struct osp_object *obj,
                                     void *data, int index, int rc)
 {
-       struct osp_xattr_entry  *oxe  = data;
-       struct lu_buf           *rbuf = &osp_env_info(env)->osi_lb2;
+       struct osp_xattr_entry *oxe = data;
 
-       if (rc == 0) {
+       spin_lock(&obj->opo_lock);
+       if (rc >= 0) {
+               struct lu_buf *rbuf = &osp_env_info(env)->osi_lb2;
                size_t len = sizeof(*oxe) + oxe->oxe_namelen + 1;
 
                rc = object_update_result_data_get(reply, rbuf, index);
-               if (rc < 0 || rbuf->lb_len > (oxe->oxe_buflen - len)) {
-                       spin_lock(&obj->opo_lock);
-                       oxe->oxe_ready = 0;
-                       spin_unlock(&obj->opo_lock);
-                       osp_oac_xattr_put(oxe);
+               if (rc == -ENOENT || rc == -ENODATA || rc == 0) {
+                       oxe->oxe_exist = 0;
+                       oxe->oxe_ready = 1;
+                       goto unlock;
+               }
 
-                       return rc < 0 ? rc : -ERANGE;
+               if (unlikely(rc < 0) ||
+                   rbuf->lb_len > (oxe->oxe_buflen - len)) {
+                       oxe->oxe_ready = 0;
+                       goto unlock;
                }
 
-               spin_lock(&obj->opo_lock);
-               oxe->oxe_vallen = rbuf->lb_len;
-               memcpy(oxe->oxe_value, rbuf->lb_buf, rbuf->lb_len);
-               oxe->oxe_exist = 1;
-               oxe->oxe_ready = 1;
-               spin_unlock(&obj->opo_lock);
+               __osp_oac_xattr_assignment(obj, oxe, rbuf);
        } else if (rc == -ENOENT || rc == -ENODATA) {
-               spin_lock(&obj->opo_lock);
                oxe->oxe_exist = 0;
                oxe->oxe_ready = 1;
-               spin_unlock(&obj->opo_lock);
        } else {
-               spin_lock(&obj->opo_lock);
                oxe->oxe_ready = 0;
-               spin_unlock(&obj->opo_lock);
        }
 
+unlock:
+       spin_unlock(&obj->opo_lock);
+
+       /* Put the reference obtained in the osp_declare_xattr_get(). */
        osp_oac_xattr_put(oxe);
 
        return 0;
@@ -771,25 +874,23 @@ static int osp_declare_xattr_get(const struct lu_env *env, struct dt_object *dt,
        struct osp_object       *obj     = dt2osp_obj(dt);
        struct osp_device       *osp     = lu2osp_dev(dt->do_lu.lo_dev);
        struct osp_xattr_entry  *oxe;
-       __u16 namelen;
        int                      rc      = 0;
+       __u16 len;
 
        LASSERT(buf != NULL);
        LASSERT(name != NULL);
 
-       namelen = strlen(name);
-
-       /* If only for xattr size, return directly. */
        if (unlikely(buf->lb_len == 0))
-               return 0;
+               return -EINVAL;
 
        oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
        if (oxe == NULL)
                return -ENOMEM;
 
+       len = strlen(name) + 1;
        mutex_lock(&osp->opd_async_requests_mutex);
        rc = osp_insert_async_request(env, OUT_XATTR_GET, obj, 1,
-                                     &namelen, (const void **)&name,
+                                     &len, (const void **)&name,
                                      oxe, buf->lb_len,
                                      osp_xattr_get_interpterer);
        if (rc != 0) {
@@ -853,8 +954,8 @@ int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
        struct ptlrpc_request   *req    = NULL;
        struct object_update_reply *reply;
        struct osp_xattr_entry  *oxe    = NULL;
-       const char              *dname  = dt->do_lu.lo_dev->ld_obd->obd_name;
-       int                      rc     = 0;
+       const char *dname = osp_dto2name(obj);
+       int invalidated, rc = 0;
        ENTRY;
 
        LASSERT(buf != NULL);
@@ -874,6 +975,8 @@ int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
        if (unlikely(obj->opo_non_exist))
                RETURN(-ENOENT);
 
+       invalidated = atomic_read(&obj->opo_invalidate_seq);
+
        oxe = osp_oac_xattr_find(obj, name, false);
        if (oxe != NULL) {
                spin_lock(&obj->opo_lock);
@@ -902,17 +1005,40 @@ unlock:
        }
        update = osp_update_request_create(dev);
        if (IS_ERR(update))
-               GOTO(out, rc = PTR_ERR(update));
+               GOTO(out_req, rc = PTR_ERR(update));
 
-       rc = osp_update_rpc_pack(env, xattr_get, update, OUT_XATTR_GET,
+       rc = OSP_UPDATE_RPC_PACK(env, out_xattr_get_pack, update,
                                 lu_object_fid(&dt->do_lu), name, buf->lb_len);
        if (rc != 0) {
                CERROR("%s: Insert update error "DFID": rc = %d\n",
                       dname, PFID(lu_object_fid(&dt->do_lu)), rc);
-               GOTO(out, rc);
+               GOTO(out_req, rc);
        }
 
        rc = osp_remote_sync(env, osp, update, &req);
+
+       down_read(&obj->opo_invalidate_sem);
+       if (invalidated != atomic_read(&obj->opo_invalidate_seq)) {
+               /* invalidated has been requested, we can't cache the result */
+               if (rc < 0) {
+                       if (rc == -ENOENT)
+                               dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
+                       GOTO(out, rc);
+               }
+               reply = req_capsule_server_sized_get(&req->rq_pill,
+                                                    &RMF_OUT_UPDATE_REPLY,
+                               OUT_UPDATE_REPLY_SIZE);
+               if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
+                       CERROR("%s: Wrong version %x expected %x "DFID
+                              ": rc = %d\n", dname, reply->ourp_magic,
+                              UPDATE_REPLY_MAGIC,
+                              PFID(lu_object_fid(&dt->do_lu)), -EPROTO);
+                       GOTO(out, rc = -EPROTO);
+               }
+               rc = object_update_result_data_get(reply, rbuf, 0);
+               GOTO(out, rc);
+       }
+
        if (rc < 0) {
                if (rc == -ENOENT) {
                        dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
@@ -954,20 +1080,39 @@ unlock:
        }
 
        rc = object_update_result_data_get(reply, rbuf, 0);
-       if (rc < 0)
-               GOTO(out, rc);
+       if (rc < 0 || rbuf->lb_len == 0) {
+               if (oxe == NULL && rc == -ENODATA) {
+                       oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
+                       if (oxe == NULL) {
+                               rc = -ENOMEM;
+                               CWARN("%s: Fail to add xattr (%s) to cache for "
+                                     DFID" (1): rc = %d\n", dname, name,
+                                     PFID(lu_object_fid(&dt->do_lu)), rc);
+                               GOTO(out, rc);
+                       }
+               }
 
-       if (buf->lb_buf == NULL)
-               GOTO(out, rc);
+               if (oxe) {
+                       spin_lock(&obj->opo_lock);
+                       if (unlikely(rc == -ENODATA)) {
+                               oxe->oxe_exist = 0;
+                               oxe->oxe_ready = 1;
+                       } else {
+                               oxe->oxe_ready = 0;
+                       }
+                       spin_unlock(&obj->opo_lock);
+               }
 
-       if (unlikely(buf->lb_len < rbuf->lb_len))
-               GOTO(out, rc = -ERANGE);
+               GOTO(out, rc);
+       }
 
-       memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
+       /* For detecting EA size. */
+       if (!buf->lb_buf)
+               GOTO(out, rc);
 
-       if (oxe == NULL) {
+       if (!oxe) {
                oxe = osp_oac_xattr_find_or_add(obj, name, rbuf->lb_len);
-               if (oxe == NULL) {
+               if (!oxe) {
                        CWARN("%s: Fail to add xattr (%s) to "
                              "cache for "DFID" (2): rc = %d\n",
                              dname, name, PFID(lu_object_fid(&dt->do_lu)), rc);
@@ -976,45 +1121,28 @@ unlock:
                }
        }
 
-       if (oxe->oxe_buflen - oxe->oxe_namelen - 1 < rbuf->lb_len) {
-               struct osp_xattr_entry *old = oxe;
-               struct osp_xattr_entry *tmp;
+       oxe = osp_oac_xattr_assignment(obj, oxe, rbuf);
 
-               tmp = osp_oac_xattr_replace(obj, &old, rbuf->lb_len);
-               osp_oac_xattr_put(oxe);
-               oxe = tmp;
-               if (tmp == NULL) {
-                       CWARN("%s: Fail to update xattr (%s) to "
-                             "cache for "DFID": rc = %d\n",
-                             dname, name, PFID(lu_object_fid(&dt->do_lu)), rc);
-                       spin_lock(&obj->opo_lock);
-                       old->oxe_ready = 0;
-                       spin_unlock(&obj->opo_lock);
+       GOTO(out, rc);
 
-                       GOTO(out, rc);
-               }
+out:
+       up_read(&obj->opo_invalidate_sem);
 
-               /* Drop the ref for entry on list. */
-               osp_oac_xattr_put(old);
+out_req:
+       if (rc > 0 && buf->lb_buf) {
+               if (unlikely(buf->lb_len < rbuf->lb_len))
+                       rc = -ERANGE;
+               else
+                       memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
        }
 
-       spin_lock(&obj->opo_lock);
-       oxe->oxe_vallen = rbuf->lb_len;
-       memcpy(oxe->oxe_value, rbuf->lb_buf, rbuf->lb_len);
-       oxe->oxe_exist = 1;
-       oxe->oxe_ready = 1;
-       spin_unlock(&obj->opo_lock);
-
-       GOTO(out, rc);
-
-out:
-       if (req != NULL)
+       if (req)
                ptlrpc_req_finished(req);
 
-       if (update != NULL && !IS_ERR(update))
+       if (update && !IS_ERR(update))
                osp_update_request_destroy(env, update);
 
-       if (oxe != NULL)
+       if (oxe)
                osp_oac_xattr_put(oxe);
 
        return rc;
@@ -1075,10 +1203,10 @@ int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
                  const struct lu_buf *buf, const char *name, int fl,
                  struct thandle *th)
 {
-       struct osp_object       *o = dt2osp_obj(dt);
+       struct osp_object *o = dt2osp_obj(dt);
        struct osp_update_request *update;
-       struct osp_xattr_entry  *oxe;
-       int                     rc;
+       struct osp_xattr_entry *oxe;
+       int rc;
        ENTRY;
 
        update = thandle_to_osp_update_request(th);
@@ -1087,7 +1215,7 @@ int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
        CDEBUG(D_INODE, DFID" set xattr '%s' with size %zd\n",
               PFID(lu_object_fid(&dt->do_lu)), name, buf->lb_len);
 
-       rc = osp_update_rpc_pack(env, xattr_set, update, OUT_XATTR_SET,
+       rc = OSP_UPDATE_RPC_PACK(env, out_xattr_set_pack, update,
                                 lu_object_fid(&dt->do_lu), buf, name, fl);
        if (rc != 0)
                RETURN(rc);
@@ -1105,41 +1233,14 @@ int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
        oxe = osp_oac_xattr_find_or_add(o, name, buf->lb_len);
        if (oxe == NULL) {
                CWARN("%s: cannot cache xattr '%s' of "DFID"\n",
-                     dt->do_lu.lo_dev->ld_obd->obd_name,
-                     name, PFID(lu_object_fid(&dt->do_lu)));
+                     osp_dto2name(o), name, PFID(lu_object_fid(&dt->do_lu)));
 
                RETURN(0);
        }
 
-       if (oxe->oxe_buflen - oxe->oxe_namelen - 1 < buf->lb_len) {
-               struct osp_xattr_entry *old = oxe;
-               struct osp_xattr_entry *tmp;
-
-               tmp = osp_oac_xattr_replace(o, &old, buf->lb_len);
+       oxe = osp_oac_xattr_assignment(o, oxe, buf);
+       if (oxe)
                osp_oac_xattr_put(oxe);
-               oxe = tmp;
-               if (tmp == NULL) {
-                       CWARN("%s: cannot update cached xattr '%s' of "DFID"\n",
-                             dt->do_lu.lo_dev->ld_obd->obd_name,
-                             name, PFID(lu_object_fid(&dt->do_lu)));
-                       spin_lock(&o->opo_lock);
-                       old->oxe_ready = 0;
-                       spin_unlock(&o->opo_lock);
-
-                       RETURN(0);
-               }
-
-               /* Drop the ref for entry on list. */
-               osp_oac_xattr_put(old);
-       }
-
-       spin_lock(&o->opo_lock);
-       oxe->oxe_vallen = buf->lb_len;
-       memcpy(oxe->oxe_value, buf->lb_buf, buf->lb_len);
-       oxe->oxe_exist = 1;
-       oxe->oxe_ready = 1;
-       spin_unlock(&o->opo_lock);
-       osp_oac_xattr_put(oxe);
 
        RETURN(0);
 }
@@ -1191,16 +1292,15 @@ int osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
                  const char *name, struct thandle *th)
 {
        struct osp_update_request *update;
-       const struct lu_fid      *fid = lu_object_fid(&dt->do_lu);
-       struct osp_object        *o     = dt2osp_obj(dt);
-       struct osp_xattr_entry   *oxe;
-       int                       rc;
+       const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
+       struct osp_object *o = dt2osp_obj(dt);
+       struct osp_xattr_entry *oxe;
+       int rc;
 
        update = thandle_to_osp_update_request(th);
        LASSERT(update != NULL);
 
-       rc = osp_update_rpc_pack(env, xattr_del, update, OUT_XATTR_DEL,
-                                fid, name);
+       rc = OSP_UPDATE_RPC_PACK(env, out_xattr_del_pack, update, fid, name);
        if (rc != 0)
                return rc;
 
@@ -1243,15 +1343,40 @@ int osp_invalidate(const struct lu_env *env, struct dt_object *dt)
        struct osp_object *obj = dt2osp_obj(dt);
        ENTRY;
 
-       osp_obj_invalidate_cache(obj);
+       CDEBUG(D_HA, "Invalidate osp_object "DFID"\n",
+              PFID(lu_object_fid(&dt->do_lu)));
+
+       /* serialize attr/EA set vs. invalidation */
+       down_write(&obj->opo_invalidate_sem);
+
+       /* this should invalidate all in-flights */
+       atomic_inc(&obj->opo_invalidate_seq);
 
        spin_lock(&obj->opo_lock);
-       obj->opo_stale = 1;
+       /* do not mark new objects stale */
+       if (obj->opo_attr.la_valid)
+               obj->opo_stale = 1;
+       obj->opo_non_exist = 0;
        spin_unlock(&obj->opo_lock);
 
+       osp_obj_invalidate_cache(obj);
+
+       up_write(&obj->opo_invalidate_sem);
+
        RETURN(0);
 }
 
+bool osp_check_stale(struct dt_object *dt)
+{
+       struct osp_object *obj = dt2osp_obj(dt);
+
+       if (is_ost_obj(&dt->do_lu) && obj->opo_non_exist)
+               return true;
+
+       return obj->opo_stale;
+}
+
+
 /**
  * Implement OSP layer dt_object_operations::do_declare_create() interface.
  *
@@ -1259,7 +1384,7 @@ int osp_invalidate(const struct lu_env *env, struct dt_object *dt)
  *
  * If the transaction is a remote transaction and the FID for the OST-object
  * has been assigned already, then handle it as creating (remote) MDT object
- * via osp_md_declare_object_create(). This function is usually used for LFSCK
+ * via osp_md_declare_create(). This function is usually used for LFSCK
  * to re-create the lost OST object. Otherwise, if it is not replay case, the
  * OSP will reserve pre-created object for the subsequent create operation;
  * if the MDT side cached pre-created objects are less than some threshold,
@@ -1276,12 +1401,10 @@ int osp_invalidate(const struct lu_env *env, struct dt_object *dt)
  * \retval             0 for success
  * \retval             negative error number on failure
  */
-static int osp_declare_object_create(const struct lu_env *env,
-                                    struct dt_object *dt,
-                                    struct lu_attr *attr,
-                                    struct dt_allocation_hint *hint,
-                                    struct dt_object_format *dof,
-                                    struct thandle *th)
+static int osp_declare_create(const struct lu_env *env, struct dt_object *dt,
+                             struct lu_attr *attr,
+                             struct dt_allocation_hint *hint,
+                             struct dt_object_format *dof, struct thandle *th)
 {
        struct osp_thread_info  *osi = osp_env_info(env);
        struct osp_device       *d = lu2osp_dev(dt->do_lu.lo_dev);
@@ -1295,7 +1418,7 @@ static int osp_declare_object_create(const struct lu_env *env,
        if (is_only_remote_trans(th) && !fid_is_zero(fid)) {
                LASSERT(fid_is_sane(fid));
 
-               rc = osp_md_declare_object_create(env, dt, attr, hint, dof, th);
+               rc = osp_md_declare_create(env, dt, attr, hint, dof, th);
 
                RETURN(rc);
        }
@@ -1322,10 +1445,8 @@ static int osp_declare_object_create(const struct lu_env *env,
 
        if (unlikely(!fid_is_zero(fid))) {
                /* replay case: caller knows fid */
-               osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
-               osi->osi_lb.lb_len = sizeof(osi->osi_id);
-               osi->osi_lb.lb_buf = NULL;
-
+               osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, NULL,
+                                  d->opd_index);
                rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
                                             &osi->osi_lb, osi->osi_off,
                                             local_th);
@@ -1349,9 +1470,8 @@ static int osp_declare_object_create(const struct lu_env *env,
                o->opo_reserved = 1;
 
                /* common for all OSPs file hystorically */
-               osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
-               osi->osi_lb.lb_len = sizeof(osi->osi_id);
-               osi->osi_lb.lb_buf = NULL;
+               osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, NULL,
+                                  d->opd_index);
                rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
                                             &osi->osi_lb, osi->osi_off,
                                             local_th);
@@ -1370,7 +1490,7 @@ static int osp_declare_object_create(const struct lu_env *env,
  *
  * If the transaction is a remote transaction and the FID for the OST-object
  * has been assigned already, then handle it as handling MDT object via the
- * osp_md_object_create(). For other cases, the OSP will assign FID to the
+ * osp_md_create(). For other cases, the OSP will assign FID to the
  * object to be created, and update last_used Object ID (OID) file.
  *
  * \param[in] env      pointer to the thread context
@@ -1384,10 +1504,9 @@ static int osp_declare_object_create(const struct lu_env *env,
  * \retval             0 for success
  * \retval             negative error number on failure
  */
-static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
-                            struct lu_attr *attr,
-                            struct dt_allocation_hint *hint,
-                            struct dt_object_format *dof, struct thandle *th)
+static int osp_create(const struct lu_env *env, struct dt_object *dt,
+                     struct lu_attr *attr, struct dt_allocation_hint *hint,
+                     struct dt_object_format *dof, struct thandle *th)
 {
        struct osp_thread_info  *osi = osp_env_info(env);
        struct osp_device       *d = lu2osp_dev(dt->do_lu.lo_dev);
@@ -1401,7 +1520,7 @@ static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
            !fid_is_zero(lu_object_fid(&dt->do_lu))) {
                LASSERT(fid_is_sane(lu_object_fid(&dt->do_lu)));
 
-               rc = osp_md_object_create(env, dt, attr, hint, dof, th);
+               rc = osp_md_create(env, dt, attr, hint, dof, th);
                if (rc == 0)
                        o->opo_non_exist = 0;
 
@@ -1454,8 +1573,12 @@ static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
                if (d->opd_gap_count > 0) {
                        int count = d->opd_gap_count;
 
-                       ostid_set_id(&osi->osi_oi,
-                                    fid_oid(&d->opd_gap_start_fid));
+                       rc = ostid_set_id(&osi->osi_oi,
+                                         fid_oid(&d->opd_gap_start_fid));
+                       if (rc) {
+                               spin_unlock(&d->opd_pre_lock);
+                               RETURN(rc);
+                       }
                        d->opd_gap_count = 0;
                        spin_unlock(&d->opd_pre_lock);
 
@@ -1471,7 +1594,7 @@ static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
        /* Only need update last_used oid file, seq file will only be update
         * during seq rollover */
        osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off,
-                          &d->opd_last_used_fid.f_oid, d->opd_index);
+                          &d->opd_last_id, d->opd_index);
 
        rc = dt_record_write(env, d->opd_last_used_oid_file, &osi->osi_lb,
                             &osi->osi_off, local_th);
@@ -1497,8 +1620,8 @@ static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
  * \retval             0 for success
  * \retval             negative error number on failure
  */
-int osp_declare_object_destroy(const struct lu_env *env,
-                              struct dt_object *dt, struct thandle *th)
+int osp_declare_destroy(const struct lu_env *env, struct dt_object *dt,
+                       struct thandle *th)
 {
        struct osp_object       *o = dt2osp_obj(dt);
        struct osp_device       *osp = lu2osp_dev(dt->do_lu.lo_dev);
@@ -1507,7 +1630,9 @@ int osp_declare_object_destroy(const struct lu_env *env,
        ENTRY;
 
        LASSERT(!osp->opd_connect_mdt);
-       rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
+
+       if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+               rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
 
        RETURN(rc);
 }
@@ -1529,8 +1654,8 @@ int osp_declare_object_destroy(const struct lu_env *env,
  * \retval             0 for success
  * \retval             negative error number on failure
  */
-static int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
-                             struct thandle *th)
+static int osp_destroy(const struct lu_env *env, struct dt_object *dt,
+                      struct thandle *th)
 {
        struct osp_object       *o = dt2osp_obj(dt);
        struct osp_device       *osp = lu2osp_dev(dt->do_lu.lo_dev);
@@ -1541,11 +1666,14 @@ static int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
        o->opo_non_exist = 1;
 
        LASSERT(!osp->opd_connect_mdt);
-       /* once transaction is committed put proper command on
-        * the queue going to our OST. */
-       rc = osp_sync_add(env, o, MDS_UNLINK64_REC, th, NULL);
-       if (rc < 0)
-               RETURN(rc);
+
+       if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ)) {
+               /* once transaction is committed put proper command on
+                * the queue going to our OST. */
+               rc = osp_sync_add(env, o, MDS_UNLINK64_REC, th, NULL);
+               if (rc < 0)
+                       RETURN(rc);
+       }
 
        /* not needed in cache any more */
        set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
@@ -1574,8 +1702,7 @@ static int osp_orphan_index_insert(const struct lu_env *env,
                                   struct dt_object *dt,
                                   const struct dt_rec *rec,
                                   const struct dt_key *key,
-                                  struct thandle *handle,
-                                  int ignore_quota)
+                                  struct thandle *handle)
 {
        return -EOPNOTSUPP;
 }
@@ -1645,7 +1772,7 @@ void osp_it_fini(const struct lu_env *env, struct dt_it *di)
                                __free_page(pages[i]);
                        }
                }
-               OBD_FREE(pages, npages * sizeof(*pages));
+               OBD_FREE_PTR_ARRAY(pages, npages);
        }
        OBD_FREE_PTR(it);
 }
@@ -1679,7 +1806,7 @@ static int osp_it_fetch(const struct lu_env *env, struct osp_it *it)
        npages = min_t(unsigned int, OFD_MAX_BRW_SIZE, 1 << 20);
        npages /= PAGE_SIZE;
 
-       OBD_ALLOC(pages, npages * sizeof(*pages));
+       OBD_ALLOC_PTR_ARRAY(pages, npages);
        if (pages == NULL)
                RETURN(-ENOMEM);
 
@@ -1728,13 +1855,11 @@ static int osp_it_fetch(const struct lu_env *env, struct osp_it *it)
        ptlrpc_at_set_req_timeout(req);
 
        desc = ptlrpc_prep_bulk_imp(req, npages, 1,
-                                   PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
+                                   PTLRPC_BULK_PUT_SINK,
                                    MDS_BULK_PORTAL,
                                    &ptlrpc_bulk_kiov_pin_ops);
-       if (desc == NULL) {
-               ptlrpc_request_free(req);
-               RETURN(-ENOMEM);
-       }
+       if (desc == NULL)
+               GOTO(out, rc = -ENOMEM);
 
        for (i = 0; i < npages; i++)
                desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
@@ -1763,6 +1888,7 @@ static int osp_it_fetch(const struct lu_env *env, struct osp_it *it)
                GOTO(out, rc = -EINVAL);
        }
 
+       it->ooi_rec_size = ii->ii_recsize;
        it->ooi_valid_npages = npages;
        if (ptlrpc_rep_need_swab(req))
                it->ooi_swab = 1;
@@ -1856,7 +1982,7 @@ again0:
                        if (pages[i] != NULL)
                                __free_page(pages[i]);
                }
-               OBD_FREE(pages, it->ooi_total_npages * sizeof(*pages));
+               OBD_FREE_PTR_ARRAY(pages, it->ooi_total_npages);
 
                it->ooi_pos_page = 0;
                it->ooi_total_npages = 0;
@@ -1907,11 +2033,27 @@ again:
 
                it->ooi_pos_ent++;
                if (it->ooi_pos_ent < idxpage->lip_nr) {
-                       it->ooi_ent =
+                       if (it->ooi_rec_size ==
+                                       sizeof(struct lu_orphan_rec_v3)) {
+                               it->ooi_ent =
+                               (struct lu_orphan_ent_v3 *)idxpage->lip_entries+
+                                                       it->ooi_pos_ent;
+                               if (it->ooi_swab)
+                                       lustre_swab_orphan_ent_v3(it->ooi_ent);
+                       } else if (it->ooi_rec_size ==
+                                       sizeof(struct lu_orphan_rec_v2)) {
+                               it->ooi_ent =
+                               (struct lu_orphan_ent_v2 *)idxpage->lip_entries+
+                                                       it->ooi_pos_ent;
+                               if (it->ooi_swab)
+                                       lustre_swab_orphan_ent_v2(it->ooi_ent);
+                       } else {
+                               it->ooi_ent =
                                (struct lu_orphan_ent *)idxpage->lip_entries +
                                                        it->ooi_pos_ent;
-                       if (it->ooi_swab)
-                               lustre_swab_orphan_ent(it->ooi_ent);
+                               if (it->ooi_swab)
+                                       lustre_swab_orphan_ent(it->ooi_ent);
+                       }
                        RETURN(0);
                }
        }
@@ -1954,11 +2096,26 @@ static int osp_orphan_it_key_size(const struct lu_env *env,
 static int osp_orphan_it_rec(const struct lu_env *env, const struct dt_it *di,
                             struct dt_rec *rec, __u32 attr)
 {
-       struct osp_it   *it  = (struct osp_it *)di;
-       struct lu_orphan_ent    *ent = (struct lu_orphan_ent *)it->ooi_ent;
+       struct osp_it *it = (struct osp_it *)di;
+
+       if (likely(it->ooi_ent)) {
+               if (it->ooi_rec_size == sizeof(struct lu_orphan_rec_v3)) {
+                       struct lu_orphan_ent_v3 *ent =
+                               (struct lu_orphan_ent_v3 *)it->ooi_ent;
+
+                       *(struct lu_orphan_rec_v3 *)rec = ent->loe_rec;
+               } else if (it->ooi_rec_size ==
+                               sizeof(struct lu_orphan_rec_v2)) {
+                       struct lu_orphan_ent_v2 *ent =
+                               (struct lu_orphan_ent_v2 *)it->ooi_ent;
+
+                       *(struct lu_orphan_rec_v2 *)rec = ent->loe_rec;
+               } else {
+                       struct lu_orphan_ent *ent =
+                               (struct lu_orphan_ent *)it->ooi_ent;
 
-       if (likely(ent != NULL)) {
-               *(struct lu_orphan_rec *)rec = ent->loe_rec;
+                       *(struct lu_orphan_rec *)rec = ent->loe_rec;
+               }
                return 0;
        }
 
@@ -2065,10 +2222,10 @@ static struct dt_object_operations osp_obj_ops = {
        .do_xattr_get           = osp_xattr_get,
        .do_declare_xattr_set   = osp_declare_xattr_set,
        .do_xattr_set           = osp_xattr_set,
-       .do_declare_create      = osp_declare_object_create,
-       .do_create              = osp_object_create,
-       .do_declare_destroy     = osp_declare_object_destroy,
-       .do_destroy             = osp_object_destroy,
+       .do_declare_create      = osp_declare_create,
+       .do_create              = osp_create,
+       .do_declare_destroy     = osp_declare_destroy,
+       .do_destroy             = osp_destroy,
        .do_index_try           = osp_index_try,
 };
 
@@ -2098,6 +2255,7 @@ static int osp_object_init(const struct lu_env *env, struct lu_object *o,
        o->lo_header->loh_attr |= LOHA_REMOTE;
        INIT_LIST_HEAD(&po->opo_xattr_list);
        INIT_LIST_HEAD(&po->opo_invalidate_cb_list);
+       init_rwsem(&po->opo_invalidate_sem);
 
        if (is_ost_obj(o)) {
                po->opo_obj.do_ops = &osp_obj_ops;
@@ -2125,6 +2283,14 @@ static int osp_object_init(const struct lu_env *env, struct lu_object *o,
        RETURN(rc);
 }
 
+static void osp_object_free_rcu(struct rcu_head *head)
+{
+       struct osp_object *obj = container_of(head, struct osp_object,
+                                             opo_header.loh_rcu);
+
+       kmem_cache_free(osp_object_kmem, obj);
+}
+
 /**
  * Implement OSP layer lu_object_operations::loo_object_free() interface.
  *
@@ -2153,9 +2319,10 @@ static void osp_object_free(const struct lu_env *env, struct lu_object *o)
                         "Still has %d users on the xattr entry %.*s\n",
                         count-1, (int)oxe->oxe_namelen, oxe->oxe_buf);
 
-               OBD_FREE(oxe, oxe->oxe_buflen);
+               OBD_FREE_LARGE(oxe, oxe->oxe_buflen);
        }
-       OBD_SLAB_FREE_PTR(obj, osp_object_kmem);
+       OBD_FREE_PRE(obj, sizeof(*obj), "slab-freed");
+       call_rcu(&obj->opo_header.loh_rcu, osp_object_free_rcu);
 }
 
 /**
@@ -2187,6 +2354,14 @@ static void osp_object_release(const struct lu_env *env, struct lu_object *o)
                d->opd_pre_reserved--;
                spin_unlock(&d->opd_pre_lock);
 
+               /*
+                * Check that osp_precreate_cleanup_orphans is not blocked
+                * due to opd_pre_reserved > 0.
+                */
+               if (unlikely(d->opd_pre_reserved == 0 &&
+                            (d->opd_pre_recovering || d->opd_pre_status)))
+                       wake_up(&d->opd_pre_waitq);
+
                /* not needed in cache any more */
                set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
        }