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LU-243 async lov_sync() operation
[fs/lustre-release.git] / lustre / ost / ost_handler.c
index b979851..e039671 100644 (file)
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -72,7 +72,7 @@ CFS_MODULE_PARM(oss_num_create_threads, "i", int, 0444,
 /**
  * Do not return server-side uid/gid to remote client
  */
-static void ost_drop_id(struct obd_export *exp, struct  obdo *oa)
+static void ost_drop_id(struct obd_export *exp, struct obdo *oa)
 {
         if (exp_connect_rmtclient(exp)) {
                 oa->o_uid = -1;
@@ -81,6 +81,36 @@ static void ost_drop_id(struct obd_export *exp, struct  obdo *oa)
         }
 }
 
+/**
+ * Validate oa from client.
+ * 1. If the request comes from 1.8 clients, it will reset o_seq with MDT0.
+ * 2. If the request comes from 2.0 clients, currently only RSVD seq and IDIF
+ *    req are valid.
+ *      a. for single MDS  seq = FID_SEQ_OST_MDT0,
+ *      b. for CMD, seq = FID_SEQ_OST_MDT0, FID_SEQ_OST_MDT1 - FID_SEQ_OST_MAX
+ */
+static int ost_validate_obdo(struct obd_export *exp, struct obdo *oa,
+                             struct obd_ioobj *ioobj)
+{
+        if (oa != NULL && (!(oa->o_valid & OBD_MD_FLGROUP) ||
+            !(exp->exp_connect_flags & OBD_CONNECT_FULL20))) {
+                oa->o_seq = FID_SEQ_OST_MDT0;
+                if (ioobj)
+                        ioobj->ioo_seq = FID_SEQ_OST_MDT0;
+        /* remove fid_seq_is_rsvd() after FID-on-OST allows SEQ > 9 */
+        } else if (oa == NULL ||
+                   !(fid_seq_is_rsvd(oa->o_seq) || fid_seq_is_idif(oa->o_seq))) {
+                CERROR("%s: client %s sent invalid object "POSTID"\n",
+                       exp->exp_obd->obd_name, obd_export_nid2str(exp),
+                       oa ? oa->o_id : -1, oa ? oa->o_seq : -1);
+                return -EPROTO;
+        }
+        obdo_from_ostid(oa, &oa->o_oi);
+        if (ioobj)
+                ioobj_from_obdo(ioobj, oa);
+        return 0;
+}
+
 void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
 {
         struct oti_req_ack_lock *ack_lock;
@@ -89,8 +119,12 @@ void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
         if (oti == NULL)
                 return;
 
-        if (req->rq_repmsg)
+        if (req->rq_repmsg) {
+                __u64 versions[PTLRPC_NUM_VERSIONS] = { 0 };
                 lustre_msg_set_transno(req->rq_repmsg, oti->oti_transno);
+                versions[0] = oti->oti_pre_version;
+                lustre_msg_set_versions(req->rq_repmsg, versions);
+        }
         req->rq_transno = oti->oti_transno;
 
         /* XXX 4 == entries in oti_ack_locks??? */
@@ -118,6 +152,10 @@ static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
         if (body->oa.o_id == 0)
                 RETURN(-EPROTO);
 
+        rc = ost_validate_obdo(exp, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         /* If there's a DLM request, cancel the locks mentioned in it*/
         if (req_capsule_field_present(&req->rq_pill, &RMF_DLM_REQ, RCL_CLIENT)) {
                 struct ldlm_request *dlm;
@@ -155,10 +193,65 @@ static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
         RETURN(0);
 }
 
+/**
+ * Helper function for getting server side [start, start+count] DLM lock
+ * if asked by client.
+ */
+static int ost_lock_get(struct obd_export *exp, struct obdo *oa,
+                        __u64 start, __u64 count, struct lustre_handle *lh,
+                        int mode, int flags)
+{
+        struct ldlm_res_id res_id;
+        ldlm_policy_data_t policy;
+        __u64 end = start + count;
+
+        ENTRY;
+
+        LASSERT(!lustre_handle_is_used(lh));
+        /* o_id and o_gr are used for localizing resource, if client miss to set
+         * them, do not trigger ASSERTION. */
+        if (unlikely((oa->o_valid & (OBD_MD_FLID | OBD_MD_FLGROUP)) !=
+                     (OBD_MD_FLID | OBD_MD_FLGROUP)))
+                RETURN(-EPROTO);
+
+        if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
+            !(oa->o_flags & OBD_FL_SRVLOCK))
+                RETURN(0);
+
+        osc_build_res_name(oa->o_id, oa->o_seq, &res_id);
+        CDEBUG(D_INODE, "OST-side extent lock.\n");
+
+        policy.l_extent.start = start & CFS_PAGE_MASK;
+
+        /* If ->o_blocks is EOF it means "lock till the end of the
+         * file". Otherwise, it's size of a hole being punched (in bytes) */
+        if (count == OBD_OBJECT_EOF || end < start)
+                policy.l_extent.end = OBD_OBJECT_EOF;
+        else
+                policy.l_extent.end = end | ~CFS_PAGE_MASK;
+
+        RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
+                                      LDLM_EXTENT, &policy, mode, &flags,
+                                      ldlm_blocking_ast, ldlm_completion_ast,
+                                      ldlm_glimpse_ast, NULL, 0, NULL, lh));
+}
+
+/* Helper function: release lock, if any. */
+static void ost_lock_put(struct obd_export *exp,
+                         struct lustre_handle *lh, int mode)
+{
+        ENTRY;
+        if (lustre_handle_is_used(lh))
+                ldlm_lock_decref(lh, mode);
+        EXIT;
+}
+
 static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
 {
         struct ost_body *body, *repbody;
-        struct obd_info oinfo = { { { 0 } } };
+        struct obd_info *oinfo;
+        struct lustre_handle lh = { 0 };
+        struct lustre_capa *capa = NULL;
         int rc;
         ENTRY;
 
@@ -166,24 +259,41 @@ static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
         if (body == NULL)
                 RETURN(-EFAULT);
 
+        rc = ost_validate_obdo(exp, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         rc = req_capsule_server_pack(&req->rq_pill);
         if (rc)
                 RETURN(rc);
 
-        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-        repbody->oa = body->oa;
+        rc = ost_lock_get(exp, &body->oa, 0, OBD_OBJECT_EOF, &lh, LCK_PR, 0);
+        if (rc)
+                RETURN(rc);
 
-        oinfo.oi_oa = &repbody->oa;
-        if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) {
-                oinfo.oi_capa = req_capsule_client_get(&req->rq_pill,
-                                                       &RMF_CAPA1);
-                if (oinfo.oi_capa == NULL) {
+        if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
+                capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
+                if (capa == NULL) {
                         CERROR("Missing capability for OST GETATTR");
                         RETURN (-EFAULT);
                 }
         }
 
-        req->rq_status = obd_getattr(exp, &oinfo);
+        OBD_ALLOC_PTR(oinfo);
+        if (!oinfo)
+                RETURN(-ENOMEM);
+        oinfo->oi_oa = &body->oa;
+        oinfo->oi_capa = capa;
+
+        req->rq_status = obd_getattr(exp, oinfo);
+
+        OBD_FREE_PTR(oinfo);
+
+        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+        repbody->oa = body->oa;
+
+        ost_lock_put(exp, &lh, LCK_PR);
+
         ost_drop_id(exp, &repbody->oa);
         RETURN(0);
 }
@@ -201,9 +311,8 @@ static int ost_statfs(struct ptlrpc_request *req)
         osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
 
         req->rq_status = obd_statfs(req->rq_export->exp_obd, osfs,
-                                    cfs_time_current_64() - HZ, 0);
-        if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
-                osfs->os_bfree = osfs->os_bavail = 64;
+                                    cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+                                    0);
         if (req->rq_status != 0)
                 CERROR("ost: statfs failed: rc %d\n", req->rq_status);
 
@@ -221,88 +330,28 @@ static int ost_create(struct obd_export *exp, struct ptlrpc_request *req,
         if (body == NULL)
                 RETURN(-EFAULT);
 
+        rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         rc = req_capsule_server_pack(&req->rq_pill);
         if (rc)
                 RETURN(rc);
 
         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-        memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
-        oti->oti_logcookies = &repbody->oa.o_lcookie;
+        repbody->oa = body->oa;
+        oti->oti_logcookies = &body->oa.o_lcookie;
 
         req->rq_status = obd_create(exp, &repbody->oa, NULL, oti);
         //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0);
         RETURN(0);
 }
 
-/**
- * Helper function for ost_punch(): if asked by client, acquire [size, EOF]
- * lock on the file being truncated.
- */
-static int ost_punch_lock_get(struct obd_export *exp, struct obdo *oa,
-                              struct lustre_handle *lh)
-{
-        int flags;
-        struct ldlm_res_id res_id;
-        ldlm_policy_data_t policy;
-        __u64 start;
-        __u64 finis;
-
-        ENTRY;
-
-        osc_build_res_name(oa->o_id, oa->o_gr, &res_id);
-        LASSERT(!lustre_handle_is_used(lh));
-
-        if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
-            !(oa->o_flags & OBD_FL_TRUNCLOCK))
-                RETURN(0);
-
-        CDEBUG(D_INODE, "OST-side truncate lock.\n");
-
-        start = oa->o_size;
-        finis = start + oa->o_blocks;
-
-        /*
-         * standard truncate optimization: if file body is completely
-         * destroyed, don't send data back to the server.
-         */
-        flags = (start == 0) ? LDLM_AST_DISCARD_DATA : 0;
-
-        policy.l_extent.start = start & CFS_PAGE_MASK;
-
-        /*
-         * If ->o_blocks is EOF it means "lock till the end of the
-         * file". Otherwise, it's size of a hole being punched (in bytes)
-         */
-        if (oa->o_blocks == OBD_OBJECT_EOF || finis < start)
-                policy.l_extent.end = OBD_OBJECT_EOF;
-        else
-                policy.l_extent.end = finis | ~CFS_PAGE_MASK;
-
-        RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
-                                      LDLM_EXTENT, &policy, LCK_PW, &flags,
-                                      ldlm_blocking_ast, ldlm_completion_ast,
-                                      ldlm_glimpse_ast, NULL, 0, NULL, lh));
-}
-
-/**
- * Helper function for ost_punch(): release lock acquired by
- * ost_punch_lock_get(), if any.
- */
-static void ost_punch_lock_put(struct obd_export *exp, struct obdo *oa,
-                               struct lustre_handle *lh)
-{
-        ENTRY;
-        if (lustre_handle_is_used(lh))
-                ldlm_lock_decref(lh, LCK_PW);
-        EXIT;
-}
-
 static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
                      struct obd_trans_info *oti)
 {
-        struct obd_info oinfo = { { { 0 } } };
         struct ost_body *body, *repbody;
-        int rc;
+        int rc, flags = 0;
         struct lustre_handle lh = {0,};
         ENTRY;
 
@@ -313,11 +362,11 @@ static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
         if (body == NULL)
                 RETURN(-EFAULT);
 
-        oinfo.oi_oa = &body->oa;
-        oinfo.oi_policy.l_extent.start = oinfo.oi_oa->o_size;
-        oinfo.oi_policy.l_extent.end = oinfo.oi_oa->o_blocks;
+        rc = ost_validate_obdo(exp, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
 
-        if ((oinfo.oi_oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
+        if ((body->oa.o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
             (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
                 RETURN(-EPROTO);
 
@@ -325,30 +374,50 @@ static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
         if (rc)
                 RETURN(rc);
 
-        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-        rc = ost_punch_lock_get(exp, oinfo.oi_oa, &lh);
+        /* standard truncate optimization: if file body is completely
+         * destroyed, don't send data back to the server. */
+        if (body->oa.o_size == 0)
+                flags |= LDLM_AST_DISCARD_DATA;
+
+        rc = ost_lock_get(exp, &body->oa, body->oa.o_size, body->oa.o_blocks,
+                          &lh, LCK_PW, flags);
         if (rc == 0) {
-                if (oinfo.oi_oa->o_valid & OBD_MD_FLFLAGS &&
-                    oinfo.oi_oa->o_flags == OBD_FL_TRUNCLOCK)
+                struct obd_info *oinfo;
+                struct lustre_capa *capa = NULL;
+
+                if (body->oa.o_valid & OBD_MD_FLFLAGS &&
+                    body->oa.o_flags == OBD_FL_SRVLOCK)
                         /*
-                         * If OBD_FL_TRUNCLOCK is the only bit set in
+                         * If OBD_FL_SRVLOCK is the only bit set in
                          * ->o_flags, clear OBD_MD_FLFLAGS to avoid falling
                          * through filter_setattr() to filter_iocontrol().
                          */
-                        oinfo.oi_oa->o_valid &= ~OBD_MD_FLFLAGS;
+                        body->oa.o_valid &= ~OBD_MD_FLFLAGS;
 
-                if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) {
-                        oinfo.oi_capa = req_capsule_client_get(&req->rq_pill,
-                                                               &RMF_CAPA1);
-                        if (oinfo.oi_capa == NULL) {
+                if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
+                        capa = req_capsule_client_get(&req->rq_pill,
+                                                      &RMF_CAPA1);
+                        if (capa == NULL) {
                                 CERROR("Missing capability for OST PUNCH");
                                 RETURN (-EFAULT);
                         }
                 }
-                req->rq_status = obd_punch(exp, &oinfo, oti, NULL);
-                ost_punch_lock_put(exp, oinfo.oi_oa, &lh);
+
+                OBD_ALLOC_PTR(oinfo);
+                if (!oinfo)
+                        RETURN(-ENOMEM);
+                oinfo->oi_oa = &body->oa;
+                oinfo->oi_policy.l_extent.start = oinfo->oi_oa->o_size;
+                oinfo->oi_policy.l_extent.end = oinfo->oi_oa->o_blocks;
+                oinfo->oi_capa = capa;
+
+                req->rq_status = obd_punch(exp, oinfo, oti, NULL);
+                OBD_FREE_PTR(oinfo);
+                ost_lock_put(exp, &lh, LCK_PW);
         }
-        repbody->oa = *oinfo.oi_oa;
+
+        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+        repbody->oa = body->oa;
         ost_drop_id(exp, &repbody->oa);
         RETURN(rc);
 }
@@ -356,6 +425,7 @@ static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
 static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
 {
         struct ost_body *body, *repbody;
+        struct obd_info *oinfo;
         struct lustre_capa *capa = NULL;
         int rc;
         ENTRY;
@@ -364,6 +434,10 @@ static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
         if (body == NULL)
                 RETURN(-EFAULT);
 
+        rc = ost_validate_obdo(exp, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
                 if (capa == NULL) {
@@ -376,10 +450,18 @@ static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req)
         if (rc)
                 RETURN(rc);
 
+        OBD_ALLOC_PTR(oinfo);
+        if (!oinfo)
+                RETURN(-ENOMEM);
+
+        oinfo->oi_oa = &body->oa;
+        oinfo->oi_capa = capa;
+        req->rq_status = obd_sync(exp, oinfo, body->oa.o_size,
+                                  body->oa.o_blocks, NULL);
+        OBD_FREE_PTR(oinfo);
+
         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-        memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
-        req->rq_status = obd_sync(exp, &repbody->oa, NULL, repbody->oa.o_size,
-                                  repbody->oa.o_blocks, capa);
+        repbody->oa = body->oa;
         ost_drop_id(exp, &repbody->oa);
         RETURN(0);
 }
@@ -388,31 +470,43 @@ static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req,
                        struct obd_trans_info *oti)
 {
         struct ost_body *body, *repbody;
+        struct obd_info *oinfo;
+        struct lustre_capa *capa = NULL;
         int rc;
-        struct obd_info oinfo = { { { 0 } } };
         ENTRY;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
         if (body == NULL)
                 RETURN(-EFAULT);
 
-        rc = req_capsule_server_pack(&req->rq_pill);
+        rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
         if (rc)
                 RETURN(rc);
 
-        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-        repbody->oa = body->oa;
+        rc = req_capsule_server_pack(&req->rq_pill);
+        if (rc)
+                RETURN(rc);
 
-        oinfo.oi_oa = &repbody->oa;
-        if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) {
-                oinfo.oi_capa = req_capsule_client_get(&req->rq_pill,
-                                                       &RMF_CAPA1);
-                if (oinfo.oi_capa == NULL) {
+        if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
+                capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
+                if (capa == NULL) {
                         CERROR("Missing capability for OST SETATTR");
                         RETURN (-EFAULT);
                 }
         }
-        req->rq_status = obd_setattr(exp, &oinfo, oti);
+
+        OBD_ALLOC_PTR(oinfo);
+        if (!oinfo)
+                RETURN(-ENOMEM);
+        oinfo->oi_oa = &body->oa;
+        oinfo->oi_capa = capa;
+
+        req->rq_status = obd_setattr(exp, oinfo, oti);
+
+        OBD_FREE_PTR(oinfo);
+
+        repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+        repbody->oa = body->oa;
         ost_drop_id(exp, &repbody->oa);
         RETURN(0);
 }
@@ -470,7 +564,7 @@ static int ost_brw_lock_get(int mode, struct obd_export *exp,
         int i;
         ENTRY;
 
-        osc_build_res_name(obj->ioo_id, obj->ioo_gr, &res_id);
+        osc_build_res_name(obj->ioo_id, obj->ioo_seq, &res_id);
         LASSERT(mode == LCK_PR || mode == LCK_PW);
         LASSERT(!lustre_handle_is_used(lh));
 
@@ -575,7 +669,7 @@ static int ost_rw_prolong_locks(struct ptlrpc_request *req, struct obd_ioobj *ob
         struct ost_prolong_data opd = { 0 };
         ENTRY;
 
-        osc_build_res_name(obj->ioo_id, obj->ioo_gr, &res_id);
+        osc_build_res_name(obj->ioo_id, obj->ioo_seq, &res_id);
 
         opd.opd_mode = mode;
         opd.opd_exp = req->rq_export;
@@ -623,6 +717,43 @@ static int ost_rw_prolong_locks(struct ptlrpc_request *req, struct obd_ioobj *ob
         RETURN(opd.opd_lock_match);
 }
 
+/* Allocate thread local buffers if needed */
+static struct ost_thread_local_cache *ost_tls_get(struct ptlrpc_request *r)
+{
+        struct ost_thread_local_cache *tls =
+                (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
+
+        /* In normal mode of operation an I/O request is serviced only
+         * by ll_ost_io threads each of them has own tls buffers allocated by
+         * ost_thread_init().
+         * During recovery, an I/O request may be queued until any of the ost
+         * service threads process it. Not necessary it should be one of
+         * ll_ost_io threads. In that case we dynamically allocating tls
+         * buffers for the request service time. */
+        if (unlikely(tls == NULL)) {
+                LASSERT(r->rq_export->exp_in_recovery);
+                OBD_ALLOC_PTR(tls);
+                if (tls != NULL) {
+                        tls->temporary = 1;
+                        r->rq_svc_thread->t_data = tls;
+                }
+        }
+        return  tls;
+}
+
+/* Free thread local buffers if they were allocated only for servicing
+ * this one request */
+static void ost_tls_put(struct ptlrpc_request *r)
+{
+        struct ost_thread_local_cache *tls =
+                (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
+
+        if (unlikely(tls->temporary)) {
+                OBD_FREE_PTR(tls);
+                r->rq_svc_thread->t_data = NULL;
+        }
+}
+
 static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
 {
         struct ptlrpc_bulk_desc *desc = NULL;
@@ -636,6 +767,7 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
         struct lustre_handle lockh = { 0 };
         int niocount, npages, nob = 0, rc, i;
         int no_reply = 0;
+        struct ost_thread_local_cache *tls;
         ENTRY;
 
         req->rq_bulk_read = 1;
@@ -647,10 +779,10 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
 
         /* Check if there is eviction in progress, and if so, wait for it to
          * finish */
-        if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
+        if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
                 lwi = LWI_INTR(NULL, NULL); // We do not care how long it takes
                 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
-                        !atomic_read(&exp->exp_obd->obd_evict_inprogress),
+                        !cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress),
                         &lwi);
         }
         if (exp->exp_failed)
@@ -671,6 +803,10 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
         if (ioo == NULL)
                 GOTO(out, rc = -EFAULT);
 
+        rc = ost_validate_obdo(exp, &body->oa, ioo);
+        if (rc)
+                RETURN(rc);
+
         niocount = ioo->ioo_bufcnt;
         remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
         if (remote_nb == NULL)
@@ -684,20 +820,18 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 }
         }
 
-        req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER, 0);
         rc = req_capsule_server_pack(&req->rq_pill);
         if (rc)
                 GOTO(out, rc);
 
-        /*
-         * Per-thread array of struct niobuf_{local,remote}'s was allocated by
-         * ost_thread_init().
-         */
-        local_nb = ost_tls(req)->local;
+        tls = ost_tls_get(req);
+        if (tls == NULL)
+                GOTO(out_bulk, rc = -ENOMEM);
+        local_nb = tls->local;
 
         rc = ost_brw_lock_get(LCK_PR, exp, ioo, remote_nb, &lockh);
         if (rc != 0)
-                GOTO(out_bulk, rc);
+                GOTO(out_tls, rc);
 
         /*
          * If getting the lock took more time than
@@ -723,7 +857,7 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
         desc = ptlrpc_prep_bulk_exp(req, npages,
                                      BULK_PUT_SOURCE, OST_BULK_PORTAL);
         if (desc == NULL)
-                GOTO(out_lock, rc = -ENOMEM);
+                GOTO(out_commitrw, rc = -ENOMEM);
 
         if (!lustre_handle_is_used(&lockh))
                 /* no needs to try to prolong lock if server is asked
@@ -775,13 +909,13 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
         if (rc == 0) {
                 /* Check if there is eviction in progress, and if so, wait for
                  * it to finish */
-                if (unlikely(atomic_read(&exp->exp_obd->
-                                                obd_evict_inprogress))) {
+                if (unlikely(cfs_atomic_read(&exp->exp_obd->
+                                             obd_evict_inprogress))) {
                         lwi = LWI_INTR(NULL, NULL);
                         rc = l_wait_event(exp->exp_obd->
-                                                obd_evict_inprogress_waitq,
-                                          !atomic_read(&exp->exp_obd->
-                                                        obd_evict_inprogress),
+                                          obd_evict_inprogress_waitq,
+                                          !cfs_atomic_read(&exp->exp_obd->
+                                          obd_evict_inprogress),
                                           &lwi);
                 }
                 /* Check if client was evicted or tried to reconnect already */
@@ -846,6 +980,7 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 no_reply = rc != 0;
         }
 
+out_commitrw:
         /* Must commit after prep above in all cases */
         rc = obd_commitrw(OBD_BRW_READ, exp, &body->oa, 1, ioo,
                           remote_nb, npages, local_nb, oti, rc);
@@ -858,6 +993,8 @@ static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
 
 out_lock:
         ost_brw_lock_put(LCK_PR, ioo, remote_nb, &lockh);
+out_tls:
+        ost_tls_put(req);
 out_bulk:
         if (desc)
                 ptlrpc_free_bulk(desc);
@@ -903,8 +1040,9 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
         int rc, i, j;
         obd_count                client_cksum = 0, server_cksum = 0;
         cksum_type_t             cksum_type = OBD_CKSUM_CRC32;
-        int                      no_reply = 0;
+        int                      no_reply = 0, mmap = 0;
         __u32                    o_uid = 0, o_gid = 0;
+        struct ost_thread_local_cache *tls;
         ENTRY;
 
         req->rq_bulk_write = 1;
@@ -919,10 +1057,10 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
 
         /* Check if there is eviction in progress, and if so, wait for it to
          * finish */
-        if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
+        if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
                 lwi = LWI_INTR(NULL, NULL); // We do not care how long it takes
                 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
-                        !atomic_read(&exp->exp_obd->obd_evict_inprogress),
+                        !cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress),
                         &lwi);
         }
         if (exp->exp_failed)
@@ -934,15 +1072,16 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
         if (body == NULL)
                 GOTO(out, rc = -EFAULT);
 
-        if ((body->oa.o_flags & OBD_BRW_MEMALLOC) &&
-            (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
-                libcfs_memory_pressure_set();
-
         objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
                                         RCL_CLIENT) / sizeof(*ioo);
         ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
         if (ioo == NULL)
                 GOTO(out, rc = -EFAULT);
+
+        rc = ost_validate_obdo(exp, &body->oa, ioo);
+        if (rc)
+                RETURN(rc);
+
         for (niocount = i = 0; i < objcount; i++)
                 niocount += ioo[i].ioo_bufcnt;
 
@@ -956,6 +1095,10 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
             &RMF_NIOBUF_REMOTE, RCL_CLIENT) / sizeof(*remote_nb)))
                 GOTO(out, rc = -EFAULT);
 
+        if ((remote_nb[0].flags & OBD_BRW_MEMALLOC) &&
+            (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
+                cfs_memory_pressure_set();
+
         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
                 if (capa == NULL) {
@@ -972,15 +1115,14 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
         OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, obd_fail_val);
         rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
 
-        /*
-         * Per-thread array of struct niobuf_{local,remote}'s was allocated by
-         * ost_thread_init().
-         */
-        local_nb = ost_tls(req)->local;
+        tls = ost_tls_get(req);
+        if (tls == NULL)
+                GOTO(out_bulk, rc = -ENOMEM);
+        local_nb = tls->local;
 
         rc = ost_brw_lock_get(LCK_PW, exp, ioo, remote_nb, &lockh);
         if (rc != 0)
-                GOTO(out_bulk, rc);
+                GOTO(out_tls, rc);
 
         /*
          * If getting the lock took more time than
@@ -1008,6 +1150,8 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 if (body->oa.o_valid & OBD_MD_FLFLAGS)
                         cksum_type = cksum_type_unpack(body->oa.o_flags);
         }
+        if (body->oa.o_valid & OBD_MD_FLFLAGS && body->oa.o_flags & OBD_FL_MMAP)
+                mmap = 1;
 
         /* Because we already sync grant info with client when reconnect,
          * grant info will be cleared for resent req, then fed_grant and
@@ -1030,7 +1174,7 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
         desc = ptlrpc_prep_bulk_exp(req, npages,
                                      BULK_GET_SINK, OST_BULK_PORTAL);
         if (desc == NULL)
-                GOTO(out_lock, rc = -ENOMEM);
+                GOTO(skip_transfer, rc = -ENOMEM);
 
         /* NB Having prepped, we must commit... */
 
@@ -1097,6 +1241,7 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
         }
         no_reply = rc != 0;
 
+skip_transfer:
         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
         memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
 
@@ -1109,8 +1254,9 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 repbody->oa.o_cksum = server_cksum;
                 cksum_counter++;
                 if (unlikely(client_cksum != server_cksum)) {
-                        CERROR("client csum %x, server csum %x\n",
-                               client_cksum, server_cksum);
+                        CDEBUG_LIMIT(mmap ? D_INFO : D_ERROR,
+                                     "client csum %x, server csum %x\n",
+                                     client_cksum, server_cksum);
                         cksum_counter = 0;
                 } else if ((cksum_counter & (-cksum_counter)) == cksum_counter){
                         CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
@@ -1133,7 +1279,14 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 repbody->oa.o_gid = o_gid;
         }
 
-        if (unlikely(client_cksum != server_cksum && rc == 0)) {
+        /*
+         * Disable sending mtime back to the client. If the client locked the
+         * whole object, then it has already updated the mtime on its side,
+         * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
+         */
+        repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
+
+        if (unlikely(client_cksum != server_cksum && rc == 0 &&  !mmap)) {
                 int  new_cksum = ost_checksum_bulk(desc, OST_WRITE, cksum_type);
                 char *msg;
                 char *via;
@@ -1154,18 +1307,20 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
                 }
 
                 LCONSOLE_ERROR_MSG(0x168, "%s: BAD WRITE CHECKSUM: %s from "
-                                   "%s%s%s inum "LPU64"/"LPU64" object "
+                                   "%s%s%s inode "DFID" object "
                                    LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
                                    exp->exp_obd->obd_name, msg,
                                    libcfs_id2str(req->rq_peer),
                                    via, router,
                                    body->oa.o_valid & OBD_MD_FLFID ?
-                                                body->oa.o_fid : (__u64)0,
+                                                body->oa.o_parent_seq : (__u64)0,
                                    body->oa.o_valid & OBD_MD_FLFID ?
-                                                body->oa.o_generation :(__u64)0,
+                                                body->oa.o_parent_oid : 0,
+                                   body->oa.o_valid & OBD_MD_FLFID ?
+                                                body->oa.o_parent_ver : 0,
                                    body->oa.o_id,
                                    body->oa.o_valid & OBD_MD_FLGROUP ?
-                                                body->oa.o_gr : (__u64)0,
+                                                body->oa.o_seq : (__u64)0,
                                    local_nb[0].offset,
                                    local_nb[npages-1].offset +
                                    local_nb[npages-1].len - 1 );
@@ -1198,6 +1353,8 @@ static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
 
 out_lock:
         ost_brw_lock_put(LCK_PW, ioo, remote_nb, &lockh);
+out_tls:
+        ost_tls_put(req);
 out_bulk:
         if (desc)
                 ptlrpc_free_bulk(desc);
@@ -1221,7 +1378,7 @@ out:
                       exp->exp_connection->c_remote_uuid.uuid,
                       libcfs_id2str(req->rq_peer));
         }
-        libcfs_memory_pressure_clr();
+        cfs_memory_pressure_clr();
         RETURN(rc);
 }
 
@@ -1318,6 +1475,15 @@ static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req)
         }
         keylen = req_capsule_get_size(pill, &RMF_SETINFO_KEY, RCL_CLIENT);
 
+        if (KEY_IS(KEY_FIEMAP)) {
+                struct ll_fiemap_info_key *fm_key = key;
+                int rc;
+
+                rc = ost_validate_obdo(exp, &fm_key->oa, NULL);
+                if (rc)
+                        RETURN(rc);
+        }
+
         rc = obd_get_info(exp, keylen, key, &replylen, NULL, NULL);
         if (rc)
                 RETURN(rc);
@@ -1398,7 +1564,7 @@ static int ost_handle_quota_adjust_qunit(struct ptlrpc_request *req)
                 GOTO(out, rc);
 
         repoqa = req_capsule_server_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
-        req->rq_status = obd_quota_adjust_qunit(req->rq_export, oqaq, qctxt);
+        req->rq_status = obd_quota_adjust_qunit(req->rq_export, oqaq, qctxt, NULL);
         *repoqa = *oqaq;
 
  out:
@@ -1423,9 +1589,9 @@ do {                                                                    \
         reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |          \
                                       OBD_CONNECT_RMT_CLIENT_FORCE |    \
                                       OBD_CONNECT_OSS_CAPA);            \
-        spin_lock(&exp->exp_lock);                                      \
+        cfs_spin_lock(&exp->exp_lock);                                  \
         exp->exp_connect_flags = reply->ocd_connect_flags;              \
-        spin_unlock(&exp->exp_lock);                                    \
+        cfs_spin_unlock(&exp->exp_lock);                                \
 } while (0)
 
 static int ost_init_sec_level(struct ptlrpc_request *req)
@@ -1522,9 +1688,9 @@ static int ost_init_sec_level(struct ptlrpc_request *req)
                         if (!filter->fo_fl_oss_capa)
                                 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
 
-                        spin_lock(&exp->exp_lock);
+                        cfs_spin_lock(&exp->exp_lock);
                         exp->exp_connect_flags = reply->ocd_connect_flags;
-                        spin_unlock(&exp->exp_lock);
+                        cfs_spin_unlock(&exp->exp_lock);
                 }
                 break;
         default:
@@ -1557,14 +1723,14 @@ static int ost_connect_check_sptlrpc(struct ptlrpc_request *req)
         }
 
         if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
-                read_lock(&filter->fo_sptlrpc_lock);
+                cfs_read_lock(&filter->fo_sptlrpc_lock);
                 sptlrpc_target_choose_flavor(&filter->fo_sptlrpc_rset,
                                              req->rq_sp_from,
                                              req->rq_peer.nid,
                                              &flvr);
-                read_unlock(&filter->fo_sptlrpc_lock);
+                cfs_read_unlock(&filter->fo_sptlrpc_lock);
 
-                spin_lock(&exp->exp_lock);
+                cfs_spin_lock(&exp->exp_lock);
 
                 exp->exp_sp_peer = req->rq_sp_from;
                 exp->exp_flvr = flvr;
@@ -1578,7 +1744,7 @@ static int ost_connect_check_sptlrpc(struct ptlrpc_request *req)
                         rc = -EACCES;
                 }
 
-                spin_unlock(&exp->exp_lock);
+                cfs_spin_unlock(&exp->exp_lock);
         } else {
                 if (exp->exp_sp_peer != req->rq_sp_from) {
                         CERROR("RPC source %s doesn't match %s\n",
@@ -1593,6 +1759,56 @@ static int ost_connect_check_sptlrpc(struct ptlrpc_request *req)
         return rc;
 }
 
+/* Ensure that data and metadata are synced to the disk when lock is cancelled
+ * (if requested) */
+int ost_blocking_ast(struct ldlm_lock *lock,
+                             struct ldlm_lock_desc *desc,
+                             void *data, int flag)
+{
+        __u32 sync_lock_cancel = 0;
+        __u32 len = sizeof(sync_lock_cancel);
+        int rc = 0;
+        ENTRY;
+
+        rc = obd_get_info(lock->l_export, sizeof(KEY_SYNC_LOCK_CANCEL),
+                          KEY_SYNC_LOCK_CANCEL, &len, &sync_lock_cancel, NULL);
+
+        if (!rc && flag == LDLM_CB_CANCELING &&
+            (lock->l_granted_mode & (LCK_PW|LCK_GROUP)) &&
+            (sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
+             (sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
+              lock->l_flags & LDLM_FL_CBPENDING))) {
+                struct obd_info *oinfo;
+                struct obdo *oa;
+                int rc;
+
+                OBD_ALLOC_PTR(oinfo);
+                if (!oinfo)
+                        RETURN(-ENOMEM);
+                OBDO_ALLOC(oa);
+                if (!oa) {
+                        OBD_FREE_PTR(oa);
+                        RETURN(-ENOMEM);
+                }
+                oa->o_id = lock->l_resource->lr_name.name[0];
+                oa->o_seq = lock->l_resource->lr_name.name[1];
+                oa->o_valid = OBD_MD_FLID|OBD_MD_FLGROUP;
+                oinfo->oi_oa = oa;
+
+                rc = obd_sync(lock->l_export, oinfo,
+                              lock->l_policy_data.l_extent.start,
+                              lock->l_policy_data.l_extent.end, NULL);
+                if (rc)
+                        CERROR("Error %d syncing data on lock cancel\n", rc);
+
+                OBDO_FREE(oa);
+                OBD_FREE_PTR(oinfo);
+        }
+
+        rc = ldlm_server_blocking_ast(lock, desc, data, flag);
+        RETURN(rc);
+}
+
 static int ost_filter_recovery_request(struct ptlrpc_request *req,
                                        struct obd_device *obd, int *process)
 {
@@ -1701,7 +1917,7 @@ static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req,
         struct obd_ioobj *ioo;
         struct ost_body *body;
         int objcount, niocount;
-        int mode, opc, i;
+        int mode, opc, i, rc;
         __u64 start, end;
         ENTRY;
 
@@ -1720,6 +1936,10 @@ static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req,
         if (ioo == NULL)
                 RETURN(0);
 
+        rc = ost_validate_obdo(req->rq_export, &body->oa, ioo);
+        if (rc)
+                RETURN(rc);
+
         for (niocount = i = 0; i < objcount; i++)
                 niocount += ioo[i].ioo_bufcnt;
 
@@ -1738,7 +1958,7 @@ static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req,
                nb[ioo->ioo_bufcnt - 1].len - 1) | ~CFS_PAGE_MASK;
 
         LASSERT(lock->l_resource != NULL);
-        if (!osc_res_name_eq(ioo->ioo_id, ioo->ioo_gr,
+        if (!osc_res_name_eq(ioo->ioo_id, ioo->ioo_seq,
                              &lock->l_resource->lr_name))
                 RETURN(0);
 
@@ -1768,7 +1988,7 @@ static int ost_rw_hpreq_check(struct ptlrpc_request *req)
         struct obd_ioobj *ioo;
         struct ost_body *body;
         int objcount, niocount;
-        int mode, opc, i;
+        int mode, opc, i, rc;
         ENTRY;
 
         opc = lustre_msg_get_opc(req->rq_reqmsg);
@@ -1784,6 +2004,10 @@ static int ost_rw_hpreq_check(struct ptlrpc_request *req)
         if (ioo == NULL)
                 RETURN(-EFAULT);
 
+        rc = ost_validate_obdo(req->rq_export, &body->oa, ioo);
+        if (rc)
+                RETURN(rc);
+
         for (niocount = i = 0; i < objcount; i++)
                 niocount += ioo[i].ioo_bufcnt;
         nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
@@ -1841,12 +2065,17 @@ static int ost_punch_hpreq_lock_match(struct ptlrpc_request *req,
                                       struct ldlm_lock *lock)
 {
         struct ost_body *body;
+        int rc;
         ENTRY;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
         if (body == NULL)
                 RETURN(0);  /* can't return -EFAULT here */
 
+        rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         if (body->oa.o_valid & OBD_MD_FLHANDLE &&
             body->oa.o_handle.cookie == lock->l_handle.h_cookie)
                 RETURN(1);
@@ -1859,13 +2088,18 @@ static int ost_punch_hpreq_lock_match(struct ptlrpc_request *req,
 static int ost_punch_hpreq_check(struct ptlrpc_request *req)
 {
         struct ost_body *body;
+        int rc;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
         if (body == NULL)
                 RETURN(-EFAULT);
 
+        rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
+        if (rc)
+                RETURN(rc);
+
         LASSERT(!(body->oa.o_valid & OBD_MD_FLFLAGS) ||
-                !(body->oa.o_flags & OBD_FL_TRUNCLOCK));
+                !(body->oa.o_flags & OBD_FL_SRVLOCK));
 
         RETURN(ost_punch_prolong_locks(req, &body->oa));
 }
@@ -1901,7 +2135,12 @@ static int ost_hpreq_handler(struct ptlrpc_request *req)
                          * it doesn't change).
                          */
                         req_capsule_init(&req->rq_pill, req, RCL_SERVER);
-                        req_capsule_set(&req->rq_pill, &RQF_OST_BRW);
+                        if (opc == OST_READ)
+                                req_capsule_set(&req->rq_pill,
+                                                &RQF_OST_BRW_READ);
+                        else
+                                req_capsule_set(&req->rq_pill,
+                                                &RQF_OST_BRW_WRITE);
 
                         body = req_capsule_client_get(&req->rq_pill,
                                                       &RMF_OST_BODY);
@@ -1909,6 +2148,7 @@ static int ost_hpreq_handler(struct ptlrpc_request *req)
                                 CERROR("Missing/short ost_body\n");
                                 RETURN(-EFAULT);
                         }
+
                         objcount = req_capsule_get_size(&req->rq_pill,
                                                         &RMF_OBD_IOOBJ,
                                                         RCL_CLIENT) /
@@ -1964,7 +2204,7 @@ static int ost_hpreq_handler(struct ptlrpc_request *req)
                         }
 
                         if (!(body->oa.o_valid & OBD_MD_FLFLAGS) ||
-                            !(body->oa.o_flags & OBD_FL_TRUNCLOCK))
+                            !(body->oa.o_flags & OBD_FL_SRVLOCK))
                                 req->rq_ops = &ost_hpreq_punch;
                 }
         }
@@ -1992,11 +2232,8 @@ int ost_handle(struct ptlrpc_request *req)
 
         req_capsule_init(&req->rq_pill, req, RCL_SERVER);
 
-        /* XXX identical to MDS */
         if (lustre_msg_get_opc(req->rq_reqmsg) != OST_CONNECT) {
-                int recovering;
-
-                if (req->rq_export == NULL) {
+                if (!class_connected_export(req->rq_export)) {
                         CDEBUG(D_HA,"operation %d on unconnected OST from %s\n",
                                lustre_msg_get_opc(req->rq_reqmsg),
                                libcfs_id2str(req->rq_peer));
@@ -2007,10 +2244,7 @@ int ost_handle(struct ptlrpc_request *req)
                 obd = req->rq_export->exp_obd;
 
                 /* Check for aborted recovery. */
-                spin_lock_bh(&obd->obd_processing_task_lock);
-                recovering = obd->obd_recovering;
-                spin_unlock_bh(&obd->obd_processing_task_lock);
-                if (recovering) {
+                if (obd->obd_recovering) {
                         rc = ost_filter_recovery_request(req, obd,
                                                          &should_process);
                         if (rc || !should_process)
@@ -2057,8 +2291,6 @@ int ost_handle(struct ptlrpc_request *req)
                 req_capsule_set(&req->rq_pill, &RQF_OST_CREATE);
                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_CREATE_NET))
                         RETURN(0);
-                if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
-                        GOTO(out, rc = -ENOSPC);
                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
                         GOTO(out, rc = -EROFS);
                 rc = ost_create(req->rq_export, req, oti);
@@ -2087,7 +2319,7 @@ int ost_handle(struct ptlrpc_request *req)
                 rc = ost_setattr(req->rq_export, req, oti);
                 break;
         case OST_WRITE:
-                req_capsule_set(&req->rq_pill, &RQF_OST_BRW);
+                req_capsule_set(&req->rq_pill, &RQF_OST_BRW_WRITE);
                 CDEBUG(D_INODE, "write\n");
                 /* req->rq_request_portal would be nice, if it was set */
                 if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){
@@ -2108,7 +2340,7 @@ int ost_handle(struct ptlrpc_request *req)
                 /* ost_brw_write sends its own replies */
                 RETURN(rc);
         case OST_READ:
-                req_capsule_set(&req->rq_pill, &RQF_OST_BRW);
+                req_capsule_set(&req->rq_pill, &RQF_OST_BRW_READ);
                 CDEBUG(D_INODE, "read\n");
                 /* req->rq_request_portal would be nice, if it was set */
                 if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){
@@ -2212,7 +2444,7 @@ int ost_handle(struct ptlrpc_request *req)
                 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE))
                         RETURN(0);
                 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
-                                         ldlm_server_blocking_ast,
+                                         ost_blocking_ast,
                                          ldlm_server_glimpse_ast);
                 fail = OBD_FAIL_OST_LDLM_REPLY_NET;
                 break;
@@ -2316,14 +2548,14 @@ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
         int rc;
         ENTRY;
 
-        rc = cleanup_group_info();
+        rc = cfs_cleanup_group_info();
         if (rc)
                 RETURN(rc);
 
         lprocfs_ost_init_vars(&lvars);
         lprocfs_obd_setup(obd, lvars.obd_vars);
 
-        sema_init(&ost->ost_health_sem, 1);
+        cfs_sema_init(&ost->ost_health_sem, 1);
 
         if (oss_num_threads) {
                 /* If oss_num_threads is set, it is the min and the max. */
@@ -2334,7 +2566,8 @@ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
                 oss_max_threads = oss_min_threads = oss_num_threads;
         } else {
                 /* Base min threads on memory and cpus */
-                oss_min_threads = num_possible_cpus() * CFS_NUM_CACHEPAGES >>
+                oss_min_threads =
+                        cfs_num_possible_cpus() * CFS_NUM_CACHEPAGES >>
                         (27 - CFS_PAGE_SHIFT);
                 if (oss_min_threads < OSS_THREADS_MIN)
                         oss_min_threads = OSS_THREADS_MIN;
@@ -2357,7 +2590,7 @@ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
                 GOTO(out_lprocfs, rc = -ENOMEM);
         }
 
-        rc = ptlrpc_start_threads(obd, ost->ost_service);
+        rc = ptlrpc_start_threads(ost->ost_service);
         if (rc)
                 GOTO(out_service, rc = -EINVAL);
 
@@ -2386,7 +2619,7 @@ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
                 GOTO(out_service, rc = -ENOMEM);
         }
 
-        rc = ptlrpc_start_threads(obd, ost->ost_create_service);
+        rc = ptlrpc_start_threads(ost->ost_create_service);
         if (rc)
                 GOTO(out_create, rc = -EINVAL);
 
@@ -2406,7 +2639,7 @@ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
         ost->ost_io_service->srv_init = ost_thread_init;
         ost->ost_io_service->srv_done = ost_thread_done;
         ost->ost_io_service->srv_cpu_affinity = 1;
-        rc = ptlrpc_start_threads(obd, ost->ost_io_service);
+        rc = ptlrpc_start_threads(ost->ost_io_service);
         if (rc)
                 GOTO(out_io, rc = -EINVAL);
 
@@ -2436,20 +2669,16 @@ static int ost_cleanup(struct obd_device *obd)
 
         ping_evictor_stop();
 
-        spin_lock_bh(&obd->obd_processing_task_lock);
-        if (obd->obd_recovering) {
-                target_cancel_recovery_timer(obd);
-                obd->obd_recovering = 0;
-        }
-        spin_unlock_bh(&obd->obd_processing_task_lock);
-
-        down(&ost->ost_health_sem);
+        /* there is no recovery for OST OBD, all recovery is controlled by
+         * obdfilter OBD */
+        LASSERT(obd->obd_recovering == 0);
+        cfs_down(&ost->ost_health_sem);
         ptlrpc_unregister_service(ost->ost_service);
         ptlrpc_unregister_service(ost->ost_create_service);
         ptlrpc_unregister_service(ost->ost_io_service);
         ost->ost_service = NULL;
         ost->ost_create_service = NULL;
-        up(&ost->ost_health_sem);
+        cfs_up(&ost->ost_health_sem);
 
         lprocfs_obd_cleanup(obd);
 
@@ -2461,11 +2690,11 @@ static int ost_health_check(struct obd_device *obd)
         struct ost_obd *ost = &obd->u.ost;
         int rc = 0;
 
-        down(&ost->ost_health_sem);
+        cfs_down(&ost->ost_health_sem);
         rc |= ptlrpc_service_health_check(ost->ost_service);
         rc |= ptlrpc_service_health_check(ost->ost_create_service);
         rc |= ptlrpc_service_health_check(ost->ost_io_service);
-        up(&ost->ost_health_sem);
+        cfs_up(&ost->ost_health_sem);
 
         /*
          * health_check to return 0 on healthy