Whamcloud - gitweb
LU-5061 obd: add rnb_ prefix to struct niobuf_remote members
[fs/lustre-release.git] / lustre / osc / osc_request.c
index 4f896c3..93567bc 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -46,8 +46,6 @@
 #include <lustre_net.h>
 #include <lustre/lustre_user.h>
 #include <obd_cksum.h>
-#include <obd_ost.h>
-#include <obd_lov.h>
 
 #ifdef  __CYGWIN__
 # include <ctype.h>
 
 #include <lustre_ha.h>
 #include <lprocfs_status.h>
+#include <lustre_ioctl.h>
 #include <lustre_log.h>
 #include <lustre_debug.h>
 #include <lustre_param.h>
+#include <lustre_fid.h>
 #include "osc_internal.h"
 #include "osc_cl_internal.h"
 
-static void osc_release_ppga(struct brw_page **ppga, obd_count count);
-static int brw_interpret(const struct lu_env *env,
-                         struct ptlrpc_request *req, void *data, int rc);
-int osc_cleanup(struct obd_device *obd);
+struct osc_brw_async_args {
+       struct obdo              *aa_oa;
+       int                       aa_requested_nob;
+       int                       aa_nio_count;
+       obd_count                 aa_page_count;
+       int                       aa_resends;
+       struct brw_page **aa_ppga;
+       struct client_obd        *aa_cli;
+       struct list_head          aa_oaps;
+       struct list_head          aa_exts;
+       struct obd_capa  *aa_ocapa;
+       struct cl_req            *aa_clerq;
+};
 
-/* Pack OSC object metadata for disk storage (LE byte order). */
-static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
-                      struct lov_stripe_md *lsm)
-{
-        int lmm_size;
-        ENTRY;
+#define osc_grant_args osc_brw_async_args
 
-        lmm_size = sizeof(**lmmp);
-        if (!lmmp)
-                RETURN(lmm_size);
+struct osc_async_args {
+       struct obd_info *aa_oi;
+};
 
-        if (*lmmp && !lsm) {
-                OBD_FREE(*lmmp, lmm_size);
-                *lmmp = NULL;
-                RETURN(0);
-        }
+struct osc_setattr_args {
+       struct obdo             *sa_oa;
+       obd_enqueue_update_f     sa_upcall;
+       void                    *sa_cookie;
+};
 
-        if (!*lmmp) {
-                OBD_ALLOC(*lmmp, lmm_size);
-                if (!*lmmp)
-                        RETURN(-ENOMEM);
-        }
+struct osc_fsync_args {
+       struct obd_info *fa_oi;
+       obd_enqueue_update_f     fa_upcall;
+       void                    *fa_cookie;
+};
 
-        if (lsm) {
-                LASSERT(lsm->lsm_object_id);
-                LASSERT_SEQ_IS_MDT(lsm->lsm_object_seq);
-                (*lmmp)->lmm_object_id = cpu_to_le64(lsm->lsm_object_id);
-                (*lmmp)->lmm_object_seq = cpu_to_le64(lsm->lsm_object_seq);
-        }
+struct osc_enqueue_args {
+       struct obd_export               *oa_exp;
+       __u64                           *oa_flags;
+       obd_enqueue_update_f             oa_upcall;
+       void                            *oa_cookie;
+       struct ost_lvb                  *oa_lvb;
+       struct lustre_handle            *oa_lockh;
+       struct ldlm_enqueue_info        *oa_ei;
+       unsigned int                     oa_agl:1;
+};
 
-        RETURN(lmm_size);
-}
+static void osc_release_ppga(struct brw_page **ppga, obd_count count);
+static int brw_interpret(const struct lu_env *env, struct ptlrpc_request *req,
+                        void *data, int rc);
 
 /* Unpack OSC object metadata from disk storage (LE byte order). */
 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
-                        struct lov_mds_md *lmm, int lmm_bytes)
+                       struct lov_mds_md *lmm, int lmm_bytes)
 {
-        int lsm_size;
-        struct obd_import *imp = class_exp2cliimp(exp);
-        ENTRY;
+       int lsm_size;
+       struct obd_import *imp = class_exp2cliimp(exp);
+       ENTRY;
 
-        if (lmm != NULL) {
-                if (lmm_bytes < sizeof (*lmm)) {
-                        CERROR("lov_mds_md too small: %d, need %d\n",
-                               lmm_bytes, (int)sizeof(*lmm));
-                        RETURN(-EINVAL);
-                }
-                /* XXX LOV_MAGIC etc check? */
+       if (lmm != NULL) {
+               if (lmm_bytes < sizeof(*lmm)) {
+                       CERROR("%s: lov_mds_md too small: %d, need %d\n",
+                              exp->exp_obd->obd_name, lmm_bytes,
+                              (int)sizeof(*lmm));
+                       RETURN(-EINVAL);
+               }
+               /* XXX LOV_MAGIC etc check? */
 
-                if (lmm->lmm_object_id == 0) {
-                        CERROR("lov_mds_md: zero lmm_object_id\n");
-                        RETURN(-EINVAL);
-                }
-        }
+               if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) {
+                       CERROR("%s: zero lmm_object_id: rc = %d\n",
+                              exp->exp_obd->obd_name, -EINVAL);
+                       RETURN(-EINVAL);
+               }
+       }
 
-        lsm_size = lov_stripe_md_size(1);
-        if (lsmp == NULL)
-                RETURN(lsm_size);
+       lsm_size = lov_stripe_md_size(1);
+       if (lsmp == NULL)
+               RETURN(lsm_size);
 
-        if (*lsmp != NULL && lmm == NULL) {
-                OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
-                OBD_FREE(*lsmp, lsm_size);
-                *lsmp = NULL;
-                RETURN(0);
-        }
+       if (*lsmp != NULL && lmm == NULL) {
+               OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
+               OBD_FREE(*lsmp, lsm_size);
+               *lsmp = NULL;
+               RETURN(0);
+       }
 
-        if (*lsmp == NULL) {
-                OBD_ALLOC(*lsmp, lsm_size);
-                if (*lsmp == NULL)
-                        RETURN(-ENOMEM);
-                OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
-                if ((*lsmp)->lsm_oinfo[0] == NULL) {
-                        OBD_FREE(*lsmp, lsm_size);
-                        RETURN(-ENOMEM);
-                }
-                loi_init((*lsmp)->lsm_oinfo[0]);
-        }
+       if (*lsmp == NULL) {
+               OBD_ALLOC(*lsmp, lsm_size);
+               if (unlikely(*lsmp == NULL))
+                       RETURN(-ENOMEM);
+               OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
+               if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) {
+                       OBD_FREE(*lsmp, lsm_size);
+                       RETURN(-ENOMEM);
+               }
+               loi_init((*lsmp)->lsm_oinfo[0]);
+       } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) {
+               RETURN(-EBADF);
+       }
 
-        if (lmm != NULL) {
-                /* XXX zero *lsmp? */
-                (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
-                (*lsmp)->lsm_object_seq = le64_to_cpu (lmm->lmm_object_seq);
-                LASSERT((*lsmp)->lsm_object_id);
-                LASSERT_SEQ_IS_MDT((*lsmp)->lsm_object_seq);
-        }
+       if (lmm != NULL)
+               /* XXX zero *lsmp? */
+               ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi);
 
-        if (imp != NULL &&
-            (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
-                (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
-        else
-                (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
+       if (imp != NULL &&
+           (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
+               (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
+       else
+               (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
 
-        RETURN(lsm_size);
+       RETURN(lsm_size);
 }
 
 static inline void osc_pack_capa(struct ptlrpc_request *req,
@@ -180,13 +189,14 @@ static inline void osc_pack_capa(struct ptlrpc_request *req,
 static inline void osc_pack_req_body(struct ptlrpc_request *req,
                                      struct obd_info *oinfo)
 {
-        struct ost_body *body;
+       struct ost_body *body;
 
-        body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
-        LASSERT(body);
+       body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+       LASSERT(body);
 
-        lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
-        osc_pack_capa(req, body, oinfo->oi_capa);
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
+                            oinfo->oi_oa);
+       osc_pack_capa(req, body, oinfo->oi_capa);
 }
 
 static inline void osc_set_capa_size(struct ptlrpc_request *req,
@@ -212,12 +222,13 @@ static int osc_getattr_interpret(const struct lu_env *env,
 
         body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
         if (body) {
-                CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
-                lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
+               CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
+               lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
+                                    aa->aa_oi->oi_oa, &body->oa);
 
-                /* This should really be sent by the OST */
-                aa->aa_oi->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
-                aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
+               /* This should really be sent by the OST */
+               aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
+               aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
         } else {
                 CDEBUG(D_INFO, "can't unpack ost_body\n");
                 rc = -EPROTO;
@@ -291,12 +302,12 @@ static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
         if (body == NULL)
                 GOTO(out, rc = -EPROTO);
 
-        CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
-        lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
+       CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
+       lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
+                            &body->oa);
 
-        /* This should really be sent by the OST */
-        oinfo->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
-        oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
+       oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
+       oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
 
         EXIT;
  out:
@@ -337,7 +348,8 @@ static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
         if (body == NULL)
                 GOTO(out, rc = -EPROTO);
 
-        lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
+       lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
+                            &body->oa);
 
         EXIT;
 out:
@@ -359,7 +371,8 @@ static int osc_setattr_interpret(const struct lu_env *env,
         if (body == NULL)
                 GOTO(out, rc = -EPROTO);
 
-        lustre_get_wire_obdo(sa->sa_oa, &body->oa);
+       lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa,
+                            &body->oa);
 out:
         rc = sa->sa_upcall(sa->sa_cookie, rc);
         RETURN(rc);
@@ -455,7 +468,8 @@ int osc_real_create(struct obd_export *exp, struct obdo *oa,
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
         LASSERT(body);
-        lustre_set_wire_obdo(&body->oa, oa);
+
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
 
         ptlrpc_request_set_replen(req);
 
@@ -475,26 +489,24 @@ int osc_real_create(struct obd_export *exp, struct obdo *oa,
         if (body == NULL)
                 GOTO(out_req, rc = -EPROTO);
 
-        lustre_get_wire_obdo(oa, &body->oa);
+       CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags);
+       lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa);
 
-        /* This should really be sent by the OST */
-        oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
-        oa->o_valid |= OBD_MD_FLBLKSZ;
+       oa->o_blksize = cli_brw_size(exp->exp_obd);
+       oa->o_valid |= OBD_MD_FLBLKSZ;
 
-        /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
-         * have valid lsm_oinfo data structs, so don't go touching that.
-         * This needs to be fixed in a big way.
-         */
-        lsm->lsm_object_id = oa->o_id;
-        lsm->lsm_object_seq = oa->o_seq;
-        *ea = lsm;
+       /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
+        * have valid lsm_oinfo data structs, so don't go touching that.
+        * This needs to be fixed in a big way.
+        */
+       lsm->lsm_oi = oa->o_oi;
+       *ea = lsm;
 
         if (oti != NULL) {
-                oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
-
                 if (oa->o_valid & OBD_MD_FLCOOKIE) {
-                        if (!oti->oti_logcookies)
-                                oti_alloc_cookies(oti, 1);
+                       if (oti->oti_logcookies == NULL)
+                               oti->oti_logcookies = &oti->oti_onecookie;
+
                         *oti->oti_logcookies = oa->o_lcookie;
                 }
         }
@@ -532,10 +544,11 @@ int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
         req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
         ptlrpc_at_set_req_timeout(req);
 
-        body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
-        LASSERT(body);
-        lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
-        osc_pack_capa(req, body, oinfo->oi_capa);
+       body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+       LASSERT(body);
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
+                            oinfo->oi_oa);
+       osc_pack_capa(req, body, oinfo->oi_capa);
 
         ptlrpc_request_set_replen(req);
 
@@ -553,17 +566,6 @@ int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
         RETURN(0);
 }
 
-static int osc_punch(const struct lu_env *env, struct obd_export *exp,
-                     struct obd_info *oinfo, struct obd_trans_info *oti,
-                     struct ptlrpc_request_set *rqset)
-{
-        oinfo->oi_oa->o_size   = oinfo->oi_policy.l_extent.start;
-        oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
-        oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
-        return osc_punch_base(exp, oinfo,
-                              oinfo->oi_cb_up, oinfo, rqset);
-}
-
 static int osc_sync_interpret(const struct lu_env *env,
                               struct ptlrpc_request *req,
                               void *arg, int rc)
@@ -608,11 +610,12 @@ int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
                 RETURN(rc);
         }
 
-        /* overload the size and blocks fields in the oa with start/end */
-        body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
-        LASSERT(body);
-        lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
-        osc_pack_capa(req, body, oinfo->oi_capa);
+       /* overload the size and blocks fields in the oa with start/end */
+       body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+       LASSERT(body);
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
+                            oinfo->oi_oa);
+       osc_pack_capa(req, body, oinfo->oi_capa);
 
         ptlrpc_request_set_replen(req);
         req->rq_interpret_reply = osc_sync_interpret;
@@ -631,30 +634,12 @@ int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
        RETURN (0);
 }
 
-static int osc_sync(const struct lu_env *env, struct obd_export *exp,
-                   struct obd_info *oinfo, obd_size start, obd_size end,
-                   struct ptlrpc_request_set *set)
-{
-       ENTRY;
-
-       if (!oinfo->oi_oa) {
-               CDEBUG(D_INFO, "oa NULL\n");
-               RETURN(-EINVAL);
-       }
-
-       oinfo->oi_oa->o_size = start;
-       oinfo->oi_oa->o_blocks = end;
-       oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
-
-       RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
-}
-
 /* Find and cancel locally locks matched by @mode in the resource found by
  * @objid. Found locks are added into @cancel list. Returns the amount of
  * locks added to @cancels list. */
 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
-                                   cfs_list_t *cancels,
-                                   ldlm_mode_t mode, int lock_flags)
+                                  struct list_head *cancels,
+                                  ldlm_mode_t mode, __u64 lock_flags)
 {
         struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
         struct ldlm_res_id res_id;
@@ -671,10 +656,10 @@ static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
        if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
                RETURN(0);
 
-        osc_build_res_name(oa->o_id, oa->o_seq, &res_id);
-        res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
-        if (res == NULL)
-                RETURN(0);
+       ostid_build_res_name(&oa->o_oi, &res_id);
+       res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
+       if (IS_ERR(res))
+               RETURN(0);
 
         LDLM_RESOURCE_ADDREF(res);
         count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
@@ -685,32 +670,32 @@ static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
 }
 
 static int osc_destroy_interpret(const struct lu_env *env,
-                                 struct ptlrpc_request *req, void *data,
-                                 int rc)
+                                struct ptlrpc_request *req, void *data,
+                                int rc)
 {
-        struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
+       struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
 
-        cfs_atomic_dec(&cli->cl_destroy_in_flight);
-        cfs_waitq_signal(&cli->cl_destroy_waitq);
-        return 0;
+       atomic_dec(&cli->cl_destroy_in_flight);
+       wake_up(&cli->cl_destroy_waitq);
+       return 0;
 }
 
 static int osc_can_send_destroy(struct client_obd *cli)
 {
-        if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
-            cli->cl_max_rpcs_in_flight) {
-                /* The destroy request can be sent */
-                return 1;
-        }
-        if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
-            cli->cl_max_rpcs_in_flight) {
-                /*
-                 * The counter has been modified between the two atomic
-                 * operations.
-                 */
-                cfs_waitq_signal(&cli->cl_destroy_waitq);
-        }
-        return 0;
+       if (atomic_inc_return(&cli->cl_destroy_in_flight) <=
+           cli->cl_max_rpcs_in_flight) {
+               /* The destroy request can be sent */
+               return 1;
+       }
+       if (atomic_dec_return(&cli->cl_destroy_in_flight) <
+           cli->cl_max_rpcs_in_flight) {
+               /*
+                * The counter has been modified between the two atomic
+                * operations.
+                */
+               wake_up(&cli->cl_destroy_waitq);
+       }
+       return 0;
 }
 
 int osc_create(const struct lu_env *env, struct obd_export *exp,
@@ -729,7 +714,7 @@ int osc_create(const struct lu_env *env, struct obd_export *exp,
                RETURN(osc_real_create(exp, oa, ea, oti));
        }
 
-       if (!fid_seq_is_mdt(oa->o_seq))
+       if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
                RETURN(osc_real_create(exp, oa, ea, oti));
 
        /* we should not get here anymore */
@@ -756,7 +741,7 @@ static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
         struct client_obd     *cli = &exp->exp_obd->u.cli;
         struct ptlrpc_request *req;
         struct ost_body       *body;
-        CFS_LIST_HEAD(cancels);
+       struct list_head       cancels = LIST_HEAD_INIT(cancels);
         int rc, count;
         ENTRY;
 
@@ -785,11 +770,11 @@ static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
         req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
         ptlrpc_at_set_req_timeout(req);
 
-        if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
-                oa->o_lcookie = *oti->oti_logcookies;
-        body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
-        LASSERT(body);
-        lustre_set_wire_obdo(&body->oa, oa);
+       if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
+               oa->o_lcookie = *oti->oti_logcookies;
+       body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+       LASSERT(body);
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
 
         osc_pack_capa(req, body, (struct obd_capa *)capa);
         ptlrpc_request_set_replen(req);
@@ -825,32 +810,38 @@ static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
 
         LASSERT(!(oa->o_valid & bits));
 
-        oa->o_valid |= bits;
-        client_obd_list_lock(&cli->cl_loi_list_lock);
-        oa->o_dirty = cli->cl_dirty;
-        if (cli->cl_dirty - cli->cl_dirty_transit > cli->cl_dirty_max) {
-                CERROR("dirty %lu - %lu > dirty_max %lu\n",
-                       cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
-                oa->o_undirty = 0;
-        } else if (cfs_atomic_read(&obd_dirty_pages) -
-                   cfs_atomic_read(&obd_dirty_transit_pages) >
-                   obd_max_dirty_pages + 1){
-                /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
-                 * not covered by a lock thus they may safely race and trip
-                 * this CERROR() unless we add in a small fudge factor (+1). */
-                CERROR("dirty %d - %d > system dirty_max %d\n",
-                       cfs_atomic_read(&obd_dirty_pages),
-                       cfs_atomic_read(&obd_dirty_transit_pages),
-                       obd_max_dirty_pages);
-                oa->o_undirty = 0;
-        } else if (cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff) {
-                CERROR("dirty %lu - dirty_max %lu too big???\n",
-                       cli->cl_dirty, cli->cl_dirty_max);
-                oa->o_undirty = 0;
-        } else {
-                long max_in_flight = (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)*
-                                (cli->cl_max_rpcs_in_flight + 1);
-                oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
+       oa->o_valid |= bits;
+       client_obd_list_lock(&cli->cl_loi_list_lock);
+       oa->o_dirty = cli->cl_dirty_pages << PAGE_CACHE_SHIFT;
+       if (unlikely(cli->cl_dirty_pages - cli->cl_dirty_transit >
+                    cli->cl_dirty_max_pages)) {
+               CERROR("dirty %lu - %lu > dirty_max %lu\n",
+                      cli->cl_dirty_pages, cli->cl_dirty_transit,
+                      cli->cl_dirty_max_pages);
+               oa->o_undirty = 0;
+       } else if (unlikely(atomic_read(&obd_dirty_pages) -
+                           atomic_read(&obd_dirty_transit_pages) >
+                           (long)(obd_max_dirty_pages + 1))) {
+               /* The atomic_read() allowing the atomic_inc() are
+                * not covered by a lock thus they may safely race and trip
+                * this CERROR() unless we add in a small fudge factor (+1). */
+               CERROR("%s: dirty %d - %d > system dirty_max %d\n",
+                      cli->cl_import->imp_obd->obd_name,
+                      atomic_read(&obd_dirty_pages),
+                      atomic_read(&obd_dirty_transit_pages),
+                      obd_max_dirty_pages);
+               oa->o_undirty = 0;
+       } else if (unlikely(cli->cl_dirty_max_pages - cli->cl_dirty_pages >
+                           0x7fffffff)) {
+               CERROR("dirty %lu - dirty_max %lu too big???\n",
+                      cli->cl_dirty_pages, cli->cl_dirty_max_pages);
+               oa->o_undirty = 0;
+       } else {
+               long max_in_flight = (cli->cl_max_pages_per_rpc <<
+                                     PAGE_CACHE_SHIFT) *
+                                    (cli->cl_max_rpcs_in_flight + 1);
+               oa->o_undirty = max(cli->cl_dirty_max_pages << PAGE_CACHE_SHIFT,
+                                   max_in_flight);
         }
        oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
         oa->o_dropped = cli->cl_lost_grant;
@@ -929,45 +920,45 @@ static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
  * needed, and avoids shrinking the grant piecemeal. */
 static int osc_shrink_grant(struct client_obd *cli)
 {
-        long target = (cli->cl_max_rpcs_in_flight + 1) *
-                      cli->cl_max_pages_per_rpc;
+       __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
+                            (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT);
 
-        client_obd_list_lock(&cli->cl_loi_list_lock);
-        if (cli->cl_avail_grant <= target)
-                target = cli->cl_max_pages_per_rpc;
-        client_obd_list_unlock(&cli->cl_loi_list_lock);
+       client_obd_list_lock(&cli->cl_loi_list_lock);
+       if (cli->cl_avail_grant <= target_bytes)
+               target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
+       client_obd_list_unlock(&cli->cl_loi_list_lock);
 
-        return osc_shrink_grant_to_target(cli, target);
+       return osc_shrink_grant_to_target(cli, target_bytes);
 }
 
-int osc_shrink_grant_to_target(struct client_obd *cli, long target)
+int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
 {
-        int    rc = 0;
-        struct ost_body     *body;
-        ENTRY;
-
-        client_obd_list_lock(&cli->cl_loi_list_lock);
-        /* Don't shrink if we are already above or below the desired limit
-         * We don't want to shrink below a single RPC, as that will negatively
-         * impact block allocation and long-term performance. */
-        if (target < cli->cl_max_pages_per_rpc)
-                target = cli->cl_max_pages_per_rpc;
+       int                     rc = 0;
+       struct ost_body        *body;
+       ENTRY;
 
-        if (target >= cli->cl_avail_grant) {
-                client_obd_list_unlock(&cli->cl_loi_list_lock);
-                RETURN(0);
-        }
-        client_obd_list_unlock(&cli->cl_loi_list_lock);
+       client_obd_list_lock(&cli->cl_loi_list_lock);
+       /* Don't shrink if we are already above or below the desired limit
+        * We don't want to shrink below a single RPC, as that will negatively
+        * impact block allocation and long-term performance. */
+       if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT)
+               target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
+
+       if (target_bytes >= cli->cl_avail_grant) {
+               client_obd_list_unlock(&cli->cl_loi_list_lock);
+               RETURN(0);
+       }
+       client_obd_list_unlock(&cli->cl_loi_list_lock);
 
-        OBD_ALLOC_PTR(body);
-        if (!body)
-                RETURN(-ENOMEM);
+       OBD_ALLOC_PTR(body);
+       if (!body)
+               RETURN(-ENOMEM);
 
-        osc_announce_cached(cli, &body->oa, 0);
+       osc_announce_cached(cli, &body->oa, 0);
 
-        client_obd_list_lock(&cli->cl_loi_list_lock);
-        body->oa.o_grant = cli->cl_avail_grant - target;
-        cli->cl_avail_grant = target;
+       client_obd_list_lock(&cli->cl_loi_list_lock);
+       body->oa.o_grant = cli->cl_avail_grant - target_bytes;
+       cli->cl_avail_grant = target_bytes;
         client_obd_list_unlock(&cli->cl_loi_list_lock);
         if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
                 body->oa.o_valid |= OBD_MD_FLFLAGS;
@@ -985,7 +976,6 @@ int osc_shrink_grant_to_target(struct client_obd *cli, long target)
         RETURN(rc);
 }
 
-#define GRANT_SHRINK_LIMIT PTLRPC_MAX_BRW_SIZE
 static int osc_should_shrink_grant(struct client_obd *client)
 {
         cfs_time_t time = cfs_time_current();
@@ -995,26 +985,30 @@ static int osc_should_shrink_grant(struct client_obd *client)
              OBD_CONNECT_GRANT_SHRINK) == 0)
                 return 0;
 
-        if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
-                if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
-                    client->cl_avail_grant > GRANT_SHRINK_LIMIT)
-                        return 1;
-                else
-                        osc_update_next_shrink(client);
-        }
+       if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
+               /* Get the current RPC size directly, instead of going via:
+                * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
+                * Keep comment here so that it can be found by searching. */
+               int brw_size = client->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
+
+               if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
+                   client->cl_avail_grant > brw_size)
+                       return 1;
+               else
+                       osc_update_next_shrink(client);
+       }
         return 0;
 }
 
 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
 {
-        struct client_obd *client;
+       struct client_obd *client;
 
-        cfs_list_for_each_entry(client, &item->ti_obd_list,
-                                cl_grant_shrink_list) {
-                if (osc_should_shrink_grant(client))
-                        osc_shrink_grant(client);
-        }
-        return 0;
+       list_for_each_entry(client, &item->ti_obd_list, cl_grant_shrink_list) {
+               if (osc_should_shrink_grant(client))
+                       osc_shrink_grant(client);
+       }
+       return 0;
 }
 
 static int osc_add_shrink_grant(struct client_obd *client)
@@ -1044,31 +1038,33 @@ static int osc_del_shrink_grant(struct client_obd *client)
 
 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
 {
-        /*
-         * ocd_grant is the total grant amount we're expect to hold: if we've
-         * been evicted, it's the new avail_grant amount, cl_dirty will drop
-         * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
-         *
-         * race is tolerable here: if we're evicted, but imp_state already
-         * left EVICTED state, then cl_dirty must be 0 already.
-         */
-        client_obd_list_lock(&cli->cl_loi_list_lock);
-        if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
-                cli->cl_avail_grant = ocd->ocd_grant;
-        else
-                cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
+       /*
+        * ocd_grant is the total grant amount we're expect to hold: if we've
+        * been evicted, it's the new avail_grant amount, cl_dirty_pages will
+        * drop to 0 as inflight RPCs fail out; otherwise, it's avail_grant +
+        * dirty.
+        *
+        * race is tolerable here: if we're evicted, but imp_state already
+        * left EVICTED state, then cl_dirty_pages must be 0 already.
+        */
+       client_obd_list_lock(&cli->cl_loi_list_lock);
+       if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
+               cli->cl_avail_grant = ocd->ocd_grant;
+       else
+               cli->cl_avail_grant = ocd->ocd_grant -
+                                     (cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
 
         if (cli->cl_avail_grant < 0) {
-                CWARN("%s: available grant < 0, the OSS is probably not running"
-                      " with patch from bug20278 (%ld) \n",
-                      cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
-                /* workaround for 1.6 servers which do not have
-                 * the patch from bug20278 */
-                cli->cl_avail_grant = ocd->ocd_grant;
+               CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
+                     cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
+                     ocd->ocd_grant, cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
+               /* workaround for servers which do not have the patch from
+                * LU-2679 */
+               cli->cl_avail_grant = ocd->ocd_grant;
         }
 
        /* determine the appropriate chunk size used by osc_extent. */
-       cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
+       cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize);
        client_obd_list_unlock(&cli->cl_loi_list_lock);
 
        CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
@@ -1076,7 +1072,7 @@ static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
                cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
 
        if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
-           cfs_list_empty(&cli->cl_grant_shrink_list))
+           list_empty(&cli->cl_grant_shrink_list))
                osc_add_shrink_grant(cli);
 }
 
@@ -1094,29 +1090,29 @@ static void handle_short_read(int nob_read, obd_count page_count,
         while (nob_read > 0) {
                 LASSERT (page_count > 0);
 
-                if (pga[i]->count > nob_read) {
-                        /* EOF inside this page */
-                        ptr = cfs_kmap(pga[i]->pg) +
-                                (pga[i]->off & ~CFS_PAGE_MASK);
-                        memset(ptr + nob_read, 0, pga[i]->count - nob_read);
-                        cfs_kunmap(pga[i]->pg);
-                        page_count--;
-                        i++;
-                        break;
-                }
+               if (pga[i]->count > nob_read) {
+                       /* EOF inside this page */
+                       ptr = kmap(pga[i]->pg) +
+                               (pga[i]->off & ~CFS_PAGE_MASK);
+                       memset(ptr + nob_read, 0, pga[i]->count - nob_read);
+                       kunmap(pga[i]->pg);
+                       page_count--;
+                       i++;
+                       break;
+               }
 
                 nob_read -= pga[i]->count;
                 page_count--;
                 i++;
         }
 
-        /* zero remaining pages */
-        while (page_count-- > 0) {
-                ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
-                memset(ptr, 0, pga[i]->count);
-                cfs_kunmap(pga[i]->pg);
-                i++;
-        }
+       /* zero remaining pages */
+       while (page_count-- > 0) {
+               ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
+               memset(ptr, 0, pga[i]->count);
+               kunmap(pga[i]->pg);
+               i++;
+       }
 }
 
 static int check_write_rcs(struct ptlrpc_request *req,
@@ -1158,14 +1154,15 @@ static int check_write_rcs(struct ptlrpc_request *req,
 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
 {
         if (p1->flag != p2->flag) {
-                unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
-                                  OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
+               unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE |
+                                 OBD_BRW_SYNC       | OBD_BRW_ASYNC   |
+                                 OBD_BRW_NOQUOTA    | OBD_BRW_SOFT_SYNC);
 
                 /* warn if we try to combine flags that we don't know to be
                  * safe to combine */
                 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
                         CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
-                              "report this at http://bugs.whamcloud.com/\n",
+                              "report this at https://jira.hpdd.intel.com/\n",
                               p1->flag, p2->flag);
                 }
                 return 0;
@@ -1201,28 +1198,26 @@ static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
                 * simulate an OST->client data error */
                if (i == 0 && opc == OST_READ &&
                    OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
-                       unsigned char *ptr = cfs_kmap(pga[i]->pg);
+                       unsigned char *ptr = kmap(pga[i]->pg);
                        int off = pga[i]->off & ~CFS_PAGE_MASK;
+
                        memcpy(ptr + off, "bad1", min(4, nob));
-                       cfs_kunmap(pga[i]->pg);
+                       kunmap(pga[i]->pg);
                }
                cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
-                                 pga[i]->off & ~CFS_PAGE_MASK,
-                                 count);
-               LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d checksum %x\n",
-                              (int)(pga[i]->off & ~CFS_PAGE_MASK), cksum);
+                                           pga[i]->off & ~CFS_PAGE_MASK,
+                                           count);
+               LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d\n",
+                              (int)(pga[i]->off & ~CFS_PAGE_MASK));
 
                nob -= pga[i]->count;
                pg_count--;
                i++;
        }
 
-       bufsize = 4;
+       bufsize = sizeof(cksum);
        err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
 
-       if (err)
-               cfs_crypto_hash_final(hdesc, NULL, NULL);
-
        /* For sending we only compute the wrong checksum instead
         * of corrupting the data so it is still correct on a redo */
        if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
@@ -1289,12 +1284,10 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
         * retry logic */
        req->rq_no_retry_einprogress = 1;
 
-        if (opc == OST_WRITE)
-                desc = ptlrpc_prep_bulk_imp(req, page_count,
-                                            BULK_GET_SOURCE, OST_BULK_PORTAL);
-        else
-                desc = ptlrpc_prep_bulk_imp(req, page_count,
-                                            BULK_PUT_SINK, OST_BULK_PORTAL);
+       desc = ptlrpc_prep_bulk_imp(req, page_count,
+               cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
+               opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
+               OST_BULK_PORTAL);
 
         if (desc == NULL)
                 GOTO(out, rc = -ENOMEM);
@@ -1305,26 +1298,32 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
         niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
         LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
 
-        lustre_set_wire_obdo(&body->oa, oa);
-
-        obdo_to_ioobj(oa, ioobj);
-        ioobj->ioo_bufcnt = niocount;
-        osc_pack_capa(req, body, ocapa);
-        LASSERT (page_count > 0);
-        pg_prev = pga[0];
+       lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
+
+       obdo_to_ioobj(oa, ioobj);
+       ioobj->ioo_bufcnt = niocount;
+       /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
+        * that might be send for this request.  The actual number is decided
+        * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
+        * "max - 1" for old client compatibility sending "0", and also so the
+        * the actual maximum is a power-of-two number, not one less. LU-1431 */
+       ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
+       osc_pack_capa(req, body, ocapa);
+       LASSERT(page_count > 0);
+       pg_prev = pga[0];
         for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
                 struct brw_page *pg = pga[i];
                 int poff = pg->off & ~CFS_PAGE_MASK;
 
                 LASSERT(pg->count > 0);
                 /* make sure there is no gap in the middle of page array */
-                LASSERTF(page_count == 1 ||
-                         (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
-                          ergo(i > 0 && i < page_count - 1,
-                               poff == 0 && pg->count == CFS_PAGE_SIZE)   &&
-                          ergo(i == page_count - 1, poff == 0)),
-                         "i: %d/%d pg: %p off: "LPU64", count: %u\n",
-                         i, page_count, pg, pg->off, pg->count);
+               LASSERTF(page_count == 1 ||
+                        (ergo(i == 0, poff + pg->count == PAGE_CACHE_SIZE) &&
+                         ergo(i > 0 && i < page_count - 1,
+                              poff == 0 && pg->count == PAGE_CACHE_SIZE)   &&
+                         ergo(i == page_count - 1, poff == 0)),
+                        "i: %d/%d pg: %p off: "LPU64", count: %u\n",
+                        i, page_count, pg, pg->off, pg->count);
 #ifdef __linux__
                 LASSERTF(i == 0 || pg->off > pg_prev->off,
                          "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
@@ -1345,11 +1344,11 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
 
                 if (i > 0 && can_merge_pages(pg_prev, pg)) {
                         niobuf--;
-                        niobuf->len += pg->count;
-                } else {
-                        niobuf->offset = pg->off;
-                        niobuf->len    = pg->count;
-                        niobuf->flags  = pg->flag;
+                       niobuf->rnb_len += pg->count;
+               } else {
+                       niobuf->rnb_offset = pg->off;
+                       niobuf->rnb_len    = pg->count;
+                       niobuf->rnb_flags  = pg->flag;
                 }
                 pg_prev = pg;
         }
@@ -1423,7 +1422,7 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
         aa->aa_resends = 0;
         aa->aa_ppga = pga;
         aa->aa_cli = cli;
-        CFS_INIT_LIST_HEAD(&aa->aa_oaps);
+       INIT_LIST_HEAD(&aa->aa_oaps);
         if (ocapa && reserve)
                 aa->aa_ocapa = capa_get(ocapa);
 
@@ -1466,20 +1465,18 @@ static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
                 msg = "changed in transit AND doesn't match the original - "
                       "likely false positive due to mmap IO (bug 11742)";
 
-        LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
-                           " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
-                           msg, libcfs_nid2str(peer->nid),
-                           oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
-                           oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
-                           oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
-                           oa->o_id,
-                           oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
-                           pga[0]->off,
-                           pga[page_count-1]->off + pga[page_count-1]->count - 1);
-        CERROR("original client csum %x (type %x), server csum %x (type %x), "
-               "client csum now %x\n", client_cksum, client_cksum_type,
-               server_cksum, cksum_type, new_cksum);
-        return 1;
+       LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
+                          " object "DOSTID" extent ["LPU64"-"LPU64"]\n",
+                          msg, libcfs_nid2str(peer->nid),
+                          oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
+                          oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
+                          oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
+                          POSTID(&oa->o_oi), pga[0]->off,
+                          pga[page_count-1]->off + pga[page_count-1]->count - 1);
+       CERROR("original client csum %x (type %x), server csum %x (type %x), "
+              "client csum now %x\n", client_cksum, client_cksum_type,
+              server_cksum, cksum_type, new_cksum);
+       return 1;
 }
 
 /* Note rc enters this function as number of bytes transferred */
@@ -1588,42 +1585,34 @@ static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
                         router = libcfs_nid2str(req->rq_bulk->bd_sender);
                 }
 
-                if (server_cksum == ~0 && rc > 0) {
-                        CERROR("Protocol error: server %s set the 'checksum' "
-                               "bit, but didn't send a checksum.  Not fatal, "
-                               "but please notify on http://bugs.whamcloud.com/\n",
-                               libcfs_nid2str(peer->nid));
-                } else if (server_cksum != client_cksum) {
-                        LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
-                                           "%s%s%s inode "DFID" object "
-                                           LPU64"/"LPU64" extent "
-                                           "["LPU64"-"LPU64"]\n",
-                                           req->rq_import->imp_obd->obd_name,
-                                           libcfs_nid2str(peer->nid),
-                                           via, router,
-                                           body->oa.o_valid & OBD_MD_FLFID ?
-                                                body->oa.o_parent_seq : (__u64)0,
-                                           body->oa.o_valid & OBD_MD_FLFID ?
-                                                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_seq : (__u64)0,
-                                           aa->aa_ppga[0]->off,
-                                           aa->aa_ppga[aa->aa_page_count-1]->off +
-                                           aa->aa_ppga[aa->aa_page_count-1]->count -
-                                                                        1);
-                        CERROR("client %x, server %x, cksum_type %x\n",
-                               client_cksum, server_cksum, cksum_type);
-                        cksum_counter = 0;
-                        aa->aa_oa->o_cksum = client_cksum;
-                        rc = -EAGAIN;
-                } else {
-                        cksum_counter++;
-                        CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
-                        rc = 0;
-                }
+               if (server_cksum != client_cksum) {
+                       LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
+                                          "%s%s%s inode "DFID" object "DOSTID
+                                          " extent ["LPU64"-"LPU64"]\n",
+                                          req->rq_import->imp_obd->obd_name,
+                                          libcfs_nid2str(peer->nid),
+                                          via, router,
+                                          body->oa.o_valid & OBD_MD_FLFID ?
+                                               body->oa.o_parent_seq : (__u64)0,
+                                          body->oa.o_valid & OBD_MD_FLFID ?
+                                               body->oa.o_parent_oid : 0,
+                                          body->oa.o_valid & OBD_MD_FLFID ?
+                                               body->oa.o_parent_ver : 0,
+                                          POSTID(&body->oa.o_oi),
+                                          aa->aa_ppga[0]->off,
+                                          aa->aa_ppga[aa->aa_page_count-1]->off +
+                                          aa->aa_ppga[aa->aa_page_count-1]->count -
+                                                                       1);
+                       CERROR("client %x, server %x, cksum_type %x\n",
+                              client_cksum, server_cksum, cksum_type);
+                       cksum_counter = 0;
+                       aa->aa_oa->o_cksum = client_cksum;
+                       rc = -EAGAIN;
+               } else {
+                       cksum_counter++;
+                       CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
+                       rc = 0;
+               }
         } else if (unlikely(client_cksum)) {
                 static int cksum_missed;
 
@@ -1635,82 +1624,13 @@ static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
                 rc = 0;
         }
 out:
-        if (rc >= 0)
-                lustre_get_wire_obdo(aa->aa_oa, &body->oa);
+       if (rc >= 0)
+               lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
+                                    aa->aa_oa, &body->oa);
 
         RETURN(rc);
 }
 
-static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
-                            struct lov_stripe_md *lsm,
-                            obd_count page_count, struct brw_page **pga,
-                            struct obd_capa *ocapa)
-{
-        struct ptlrpc_request *req;
-        int                    rc;
-        cfs_waitq_t            waitq;
-        int                    generation, resends = 0;
-        struct l_wait_info     lwi;
-
-        ENTRY;
-
-        cfs_waitq_init(&waitq);
-        generation = exp->exp_obd->u.cli.cl_import->imp_generation;
-
-restart_bulk:
-        rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
-                                  page_count, pga, &req, ocapa, 0, resends);
-        if (rc != 0)
-                return (rc);
-
-        if (resends) {
-                req->rq_generation_set = 1;
-                req->rq_import_generation = generation;
-                req->rq_sent = cfs_time_current_sec() + resends;
-        }
-
-        rc = ptlrpc_queue_wait(req);
-
-        if (rc == -ETIMEDOUT && req->rq_resend) {
-                DEBUG_REQ(D_HA, req,  "BULK TIMEOUT");
-                ptlrpc_req_finished(req);
-                goto restart_bulk;
-        }
-
-        rc = osc_brw_fini_request(req, rc);
-
-        ptlrpc_req_finished(req);
-        /* When server return -EINPROGRESS, client should always retry
-         * regardless of the number of times the bulk was resent already.*/
-        if (osc_recoverable_error(rc)) {
-                resends++;
-                if (rc != -EINPROGRESS &&
-                    !client_should_resend(resends, &exp->exp_obd->u.cli)) {
-                        CERROR("%s: too many resend retries for object: "
-                               ""LPU64":"LPU64", rc = %d.\n",
-                               exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
-                        goto out;
-                }
-                if (generation !=
-                    exp->exp_obd->u.cli.cl_import->imp_generation) {
-                        CDEBUG(D_HA, "%s: resend cross eviction for object: "
-                               ""LPU64":"LPU64", rc = %d.\n",
-                               exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
-                        goto out;
-                }
-
-                lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
-                                       NULL);
-                l_wait_event(waitq, 0, &lwi);
-
-                goto restart_bulk;
-        }
-out:
-        if (rc == -EAGAIN || rc == -EINPROGRESS)
-                rc = -EIO;
-        RETURN (rc);
-}
-
 static int osc_brw_redo_request(struct ptlrpc_request *request,
                                struct osc_brw_async_args *aa, int rc)
 {
@@ -1731,7 +1651,7 @@ static int osc_brw_redo_request(struct ptlrpc_request *request,
         if (rc)
                 RETURN(rc);
 
-        cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
+       list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
                 if (oap->oap_request != NULL) {
                         LASSERTF(request == oap->oap_request,
                                  "request %p != oap_request %p\n",
@@ -1747,6 +1667,7 @@ static int osc_brw_redo_request(struct ptlrpc_request *request,
         aa->aa_resends++;
         new_req->rq_interpret_reply = request->rq_interpret_reply;
         new_req->rq_async_args = request->rq_async_args;
+       new_req->rq_commit_cb = request->rq_commit_cb;
        /* cap resend delay to the current request timeout, this is similar to
         * what ptlrpc does (see after_reply()) */
        if (aa->aa_resends > new_req->rq_timeout)
@@ -1758,12 +1679,13 @@ static int osc_brw_redo_request(struct ptlrpc_request *request,
 
         new_aa = ptlrpc_req_async_args(new_req);
 
-        CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
-       cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
-       CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
-       cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
+       INIT_LIST_HEAD(&new_aa->aa_oaps);
+       list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
+       INIT_LIST_HEAD(&new_aa->aa_exts);
+       list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
+       new_aa->aa_resends = aa->aa_resends;
 
-        cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
+       list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
                 if (oap->oap_request) {
                         ptlrpc_req_finished(oap->oap_request);
                         oap->oap_request = ptlrpc_request_addref(new_req);
@@ -1814,133 +1736,18 @@ static void sort_brw_pages(struct brw_page **array, int num)
         } while (stride > 1);
 }
 
-static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
-{
-        int count = 1;
-        int offset;
-        int i = 0;
-
-        LASSERT (pages > 0);
-        offset = pg[i]->off & ~CFS_PAGE_MASK;
-
-        for (;;) {
-                pages--;
-                if (pages == 0)         /* that's all */
-                        return count;
-
-                if (offset + pg[i]->count < CFS_PAGE_SIZE)
-                        return count;   /* doesn't end on page boundary */
-
-                i++;
-                offset = pg[i]->off & ~CFS_PAGE_MASK;
-                if (offset != 0)        /* doesn't start on page boundary */
-                        return count;
-
-                count++;
-        }
-}
-
-static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
-{
-        struct brw_page **ppga;
-        int i;
-
-        OBD_ALLOC(ppga, sizeof(*ppga) * count);
-        if (ppga == NULL)
-                return NULL;
-
-        for (i = 0; i < count; i++)
-                ppga[i] = pga + i;
-        return ppga;
-}
-
 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
 {
         LASSERT(ppga != NULL);
         OBD_FREE(ppga, sizeof(*ppga) * count);
 }
 
-static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
-                   obd_count page_count, struct brw_page *pga,
-                   struct obd_trans_info *oti)
-{
-        struct obdo *saved_oa = NULL;
-        struct brw_page **ppga, **orig;
-        struct obd_import *imp = class_exp2cliimp(exp);
-        struct client_obd *cli;
-        int rc, page_count_orig;
-        ENTRY;
-
-        LASSERT((imp != NULL) && (imp->imp_obd != NULL));
-        cli = &imp->imp_obd->u.cli;
-
-        if (cmd & OBD_BRW_CHECK) {
-                /* The caller just wants to know if there's a chance that this
-                 * I/O can succeed */
-
-                if (imp->imp_invalid)
-                        RETURN(-EIO);
-                RETURN(0);
-        }
-
-        /* test_brw with a failed create can trip this, maybe others. */
-        LASSERT(cli->cl_max_pages_per_rpc);
-
-        rc = 0;
-
-        orig = ppga = osc_build_ppga(pga, page_count);
-        if (ppga == NULL)
-                RETURN(-ENOMEM);
-        page_count_orig = page_count;
-
-        sort_brw_pages(ppga, page_count);
-        while (page_count) {
-                obd_count pages_per_brw;
-
-                if (page_count > cli->cl_max_pages_per_rpc)
-                        pages_per_brw = cli->cl_max_pages_per_rpc;
-                else
-                        pages_per_brw = page_count;
-
-                pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
-
-                if (saved_oa != NULL) {
-                        /* restore previously saved oa */
-                        *oinfo->oi_oa = *saved_oa;
-                } else if (page_count > pages_per_brw) {
-                        /* save a copy of oa (brw will clobber it) */
-                        OBDO_ALLOC(saved_oa);
-                        if (saved_oa == NULL)
-                                GOTO(out, rc = -ENOMEM);
-                        *saved_oa = *oinfo->oi_oa;
-                }
-
-                rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
-                                      pages_per_brw, ppga, oinfo->oi_capa);
-
-                if (rc != 0)
-                        break;
-
-                page_count -= pages_per_brw;
-                ppga += pages_per_brw;
-        }
-
-out:
-        osc_release_ppga(orig, page_count_orig);
-
-        if (saved_oa != NULL)
-                OBDO_FREE(saved_oa);
-
-        RETURN(rc);
-}
-
 static int brw_interpret(const struct lu_env *env,
                          struct ptlrpc_request *req, void *data, int rc)
 {
        struct osc_brw_async_args *aa = data;
        struct osc_extent *ext;
        struct osc_extent *tmp;
-       struct cl_object  *obj = NULL;
        struct client_obd *cli = aa->aa_cli;
         ENTRY;
 
@@ -1948,52 +1755,45 @@ static int brw_interpret(const struct lu_env *env,
         CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
         /* When server return -EINPROGRESS, client should always retry
          * regardless of the number of times the bulk was resent already. */
-        if (osc_recoverable_error(rc)) {
-                if (req->rq_import_generation !=
-                    req->rq_import->imp_generation) {
-                        CDEBUG(D_HA, "%s: resend cross eviction for object: "
-                               ""LPU64":"LPU64", rc = %d.\n",
-                               req->rq_import->imp_obd->obd_name,
-                               aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
-                } else if (rc == -EINPROGRESS ||
-                    client_should_resend(aa->aa_resends, aa->aa_cli)) {
-                        rc = osc_brw_redo_request(req, aa, rc);
-                } else {
-                        CERROR("%s: too many resent retries for object: "
-                               ""LPU64":"LPU64", rc = %d.\n",
-                               req->rq_import->imp_obd->obd_name,
-                               aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
-                }
+       if (osc_recoverable_error(rc)) {
+               if (req->rq_import_generation !=
+                   req->rq_import->imp_generation) {
+                       CDEBUG(D_HA, "%s: resend cross eviction for object: "
+                              ""DOSTID", rc = %d.\n",
+                              req->rq_import->imp_obd->obd_name,
+                              POSTID(&aa->aa_oa->o_oi), rc);
+               } else if (rc == -EINPROGRESS ||
+                   client_should_resend(aa->aa_resends, aa->aa_cli)) {
+                       rc = osc_brw_redo_request(req, aa, rc);
+               } else {
+                       CERROR("%s: too many resent retries for object: "
+                              ""LPU64":"LPU64", rc = %d.\n",
+                              req->rq_import->imp_obd->obd_name,
+                              POSTID(&aa->aa_oa->o_oi), rc);
+               }
 
-                if (rc == 0)
-                        RETURN(0);
-                else if (rc == -EAGAIN || rc == -EINPROGRESS)
-                        rc = -EIO;
-        }
+               if (rc == 0)
+                       RETURN(0);
+               else if (rc == -EAGAIN || rc == -EINPROGRESS)
+                       rc = -EIO;
+       }
 
         if (aa->aa_ocapa) {
                 capa_put(aa->aa_ocapa);
                 aa->aa_ocapa = NULL;
         }
 
-       cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
-               if (obj == NULL && rc == 0) {
-                       obj = osc2cl(ext->oe_obj);
-                       cl_object_get(obj);
-               }
-
-               cfs_list_del_init(&ext->oe_link);
-               osc_extent_finish(env, ext, 1, rc);
-       }
-       LASSERT(cfs_list_empty(&aa->aa_exts));
-       LASSERT(cfs_list_empty(&aa->aa_oaps));
-
-       if (obj != NULL) {
+       if (rc == 0) {
                struct obdo *oa = aa->aa_oa;
-               struct cl_attr *attr  = &osc_env_info(env)->oti_attr;
+               struct cl_attr *attr = &osc_env_info(env)->oti_attr;
                unsigned long valid = 0;
+               struct cl_object *obj;
+               struct osc_async_page *last;
 
-               LASSERT(rc == 0);
+               last = brw_page2oap(aa->aa_ppga[aa->aa_page_count - 1]);
+               obj = osc2cl(last->oap_obj);
+
+               cl_object_attr_lock(obj);
                if (oa->o_valid & OBD_MD_FLBLOCKS) {
                        attr->cat_blocks = oa->o_blocks;
                        valid |= CAT_BLOCKS;
@@ -2010,15 +1810,41 @@ static int brw_interpret(const struct lu_env *env,
                        attr->cat_ctime = oa->o_ctime;
                        valid |= CAT_CTIME;
                }
-               if (valid != 0) {
-                       cl_object_attr_lock(obj);
-                       cl_object_attr_set(env, obj, attr, valid);
-                       cl_object_attr_unlock(obj);
+
+               if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
+                       struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
+                       loff_t last_off = last->oap_count + last->oap_obj_off;
+
+                       /* Change file size if this is an out of quota or
+                        * direct IO write and it extends the file size */
+                       if (loi->loi_lvb.lvb_size < last_off) {
+                               attr->cat_size = last_off;
+                               valid |= CAT_SIZE;
+                       }
+                       /* Extend KMS if it's not a lockless write */
+                       if (loi->loi_kms < last_off &&
+                           oap2osc_page(last)->ops_srvlock == 0) {
+                               attr->cat_kms = last_off;
+                               valid |= CAT_KMS;
+                       }
                }
-               cl_object_put(env, obj);
+
+               if (valid != 0)
+                       cl_object_attr_set(env, obj, attr, valid);
+               cl_object_attr_unlock(obj);
        }
        OBDO_FREE(aa->aa_oa);
 
+       if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && rc == 0)
+               osc_inc_unstable_pages(req);
+
+       list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
+               list_del_init(&ext->oe_link);
+               osc_extent_finish(env, ext, 1, rc);
+       }
+       LASSERT(list_empty(&aa->aa_exts));
+       LASSERT(list_empty(&aa->aa_oaps));
+
        cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
                          req->rq_bulk->bd_nob_transferred);
        osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
@@ -2039,40 +1865,63 @@ static int brw_interpret(const struct lu_env *env,
        RETURN(rc);
 }
 
+static void brw_commit(struct ptlrpc_request *req)
+{
+       /* If osc_inc_unstable_pages (via osc_extent_finish) races with
+        * this called via the rq_commit_cb, I need to ensure
+        * osc_dec_unstable_pages is still called. Otherwise unstable
+        * pages may be leaked. */
+       spin_lock(&req->rq_lock);
+       if (likely(req->rq_unstable)) {
+               req->rq_unstable = 0;
+               spin_unlock(&req->rq_lock);
+
+               osc_dec_unstable_pages(req);
+       } else {
+               req->rq_committed = 1;
+               spin_unlock(&req->rq_lock);
+       }
+}
+
 /**
  * Build an RPC by the list of extent @ext_list. The caller must ensure
  * that the total pages in this list are NOT over max pages per RPC.
  * Extents in the list must be in OES_RPC state.
  */
 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
-                 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
-{
-       struct ptlrpc_request *req = NULL;
-       struct osc_extent *ext;
-       CFS_LIST_HEAD(rpc_list);
-       struct brw_page **pga = NULL;
-       struct osc_brw_async_args *aa = NULL;
-        struct obdo *oa = NULL;
-        struct osc_async_page *oap;
-        struct osc_async_page *tmp;
-        struct cl_req *clerq = NULL;
-        enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
-        struct ldlm_lock *lock = NULL;
-        struct cl_req_attr crattr;
-       obd_off starting_offset = OBD_OBJECT_EOF;
-       obd_off ending_offset = 0;
-       int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
+                 struct list_head *ext_list, int cmd, pdl_policy_t pol)
+{
+       struct ptlrpc_request           *req = NULL;
+       struct osc_extent               *ext;
+       struct brw_page                 **pga = NULL;
+       struct osc_brw_async_args       *aa = NULL;
+       struct obdo                     *oa = NULL;
+       struct osc_async_page           *oap;
+       struct osc_async_page           *tmp;
+       struct cl_req                   *clerq = NULL;
+       enum cl_req_type                crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE :
+                                                                     CRT_READ;
+       struct cl_req_attr              *crattr = NULL;
+       obd_off                         starting_offset = OBD_OBJECT_EOF;
+       obd_off                         ending_offset = 0;
+       int                             mpflag = 0;
+       int                             mem_tight = 0;
+       int                             page_count = 0;
+       bool                            soft_sync = false;
+       int                             i;
+       int                             rc;
+       struct list_head                rpc_list = LIST_HEAD_INIT(rpc_list);
 
        ENTRY;
-       LASSERT(!cfs_list_empty(ext_list));
+       LASSERT(!list_empty(ext_list));
 
        /* add pages into rpc_list to build BRW rpc */
-       cfs_list_for_each_entry(ext, ext_list, oe_link) {
+       list_for_each_entry(ext, ext_list, oe_link) {
                LASSERT(ext->oe_state == OES_RPC);
                mem_tight |= ext->oe_memalloc;
-               cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
+               list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
                        ++page_count;
-                       cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
+                       list_add_tail(&oap->oap_rpc_item, &rpc_list);
                        if (starting_offset > oap->oap_obj_off)
                                starting_offset = oap->oap_obj_off;
                        else
@@ -2082,14 +1931,18 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
                                                oap->oap_count;
                        else
                                LASSERT(oap->oap_page_off + oap->oap_count ==
-                                       CFS_PAGE_SIZE);
+                                       PAGE_CACHE_SIZE);
                }
        }
 
+       soft_sync = osc_over_unstable_soft_limit(cli);
        if (mem_tight)
                mpflag = cfs_memory_pressure_get_and_set();
 
-       memset(&crattr, 0, sizeof crattr);
+       OBD_ALLOC(crattr, sizeof(*crattr));
+       if (crattr == NULL)
+               GOTO(out, rc = -ENOMEM);
+
        OBD_ALLOC(pga, sizeof(*pga) * page_count);
        if (pga == NULL)
                GOTO(out, rc = -ENOMEM);
@@ -2099,77 +1952,74 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
                GOTO(out, rc = -ENOMEM);
 
        i = 0;
-       cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
+       list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
                struct cl_page *page = oap2cl_page(oap);
                if (clerq == NULL) {
                        clerq = cl_req_alloc(env, page, crt,
-                                            1 /* only 1-object rpcs for
-                                               * now */);
+                                            1 /* only 1-object rpcs for now */);
                        if (IS_ERR(clerq))
                                GOTO(out, rc = PTR_ERR(clerq));
-                       lock = oap->oap_ldlm_lock;
                }
                if (mem_tight)
                        oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
-                pga[i] = &oap->oap_brw_page;
-                pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
-                CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
-                       pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
-                i++;
-                cl_req_page_add(env, clerq, page);
-        }
+               if (soft_sync)
+                       oap->oap_brw_flags |= OBD_BRW_SOFT_SYNC;
+               pga[i] = &oap->oap_brw_page;
+               pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
+               CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
+                      pga[i]->pg, page_index(oap->oap_page), oap,
+                      pga[i]->flag);
+               i++;
+               cl_req_page_add(env, clerq, page);
+       }
 
-        /* always get the data for the obdo for the rpc */
+       /* always get the data for the obdo for the rpc */
        LASSERT(clerq != NULL);
-       crattr.cra_oa = oa;
-       crattr.cra_capa = NULL;
-       memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
-        cl_req_attr_set(env, clerq, &crattr, ~0ULL);
-        if (lock) {
-                oa->o_handle = lock->l_remote_handle;
-                oa->o_valid |= OBD_MD_FLHANDLE;
-        }
+       crattr->cra_oa = oa;
+       cl_req_attr_set(env, clerq, crattr, ~0ULL);
 
-        rc = cl_req_prep(env, clerq);
-        if (rc != 0) {
-                CERROR("cl_req_prep failed: %d\n", rc);
+       rc = cl_req_prep(env, clerq);
+       if (rc != 0) {
+               CERROR("cl_req_prep failed: %d\n", rc);
                GOTO(out, rc);
        }
 
        sort_brw_pages(pga, page_count);
        rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
-                       pga, &req, crattr.cra_capa, 1, 0);
+                       pga, &req, crattr->cra_capa, 1, 0);
        if (rc != 0) {
                CERROR("prep_req failed: %d\n", rc);
                GOTO(out, rc);
        }
 
+       req->rq_commit_cb = brw_commit;
        req->rq_interpret_reply = brw_interpret;
+
        if (mem_tight != 0)
-                req->rq_memalloc = 1;
+               req->rq_memalloc = 1;
 
-        /* Need to update the timestamps after the request is built in case
-         * we race with setattr (locally or in queue at OST).  If OST gets
-         * later setattr before earlier BRW (as determined by the request xid),
-         * the OST will not use BRW timestamps.  Sadly, there is no obvious
-         * way to do this in a single call.  bug 10150 */
-        cl_req_attr_set(env, clerq, &crattr,
-                        OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
+       /* Need to update the timestamps after the request is built in case
+        * we race with setattr (locally or in queue at OST).  If OST gets
+        * later setattr before earlier BRW (as determined by the request xid),
+        * the OST will not use BRW timestamps.  Sadly, there is no obvious
+        * way to do this in a single call.  bug 10150 */
+       cl_req_attr_set(env, clerq, crattr,
+                       OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
 
-       lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
+       lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
 
        CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
        aa = ptlrpc_req_async_args(req);
-       CFS_INIT_LIST_HEAD(&aa->aa_oaps);
-       cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
-       CFS_INIT_LIST_HEAD(&aa->aa_exts);
-       cfs_list_splice_init(ext_list, &aa->aa_exts);
+       INIT_LIST_HEAD(&aa->aa_oaps);
+       list_splice_init(&rpc_list, &aa->aa_oaps);
+       INIT_LIST_HEAD(&aa->aa_exts);
+       list_splice_init(ext_list, &aa->aa_exts);
        aa->aa_clerq = clerq;
 
        /* queued sync pages can be torn down while the pages
         * were between the pending list and the rpc */
        tmp = NULL;
-       cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
+       list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
                /* only one oap gets a request reference */
                if (tmp == NULL)
                        tmp = oap;
@@ -2183,7 +2033,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
                tmp->oap_request = ptlrpc_request_addref(req);
 
        client_obd_list_lock(&cli->cl_loi_list_lock);
-       starting_offset >>= CFS_PAGE_SHIFT;
+       starting_offset >>= PAGE_CACHE_SHIFT;
        if (cmd == OBD_BRW_READ) {
                cli->cl_r_in_flight++;
                lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
@@ -2223,20 +2073,24 @@ out:
        if (mem_tight != 0)
                cfs_memory_pressure_restore(mpflag);
 
-       capa_put(crattr.cra_capa);
+       if (crattr != NULL) {
+               capa_put(crattr->cra_capa);
+               OBD_FREE(crattr, sizeof(*crattr));
+       }
+
        if (rc != 0) {
                LASSERT(req == NULL);
 
-                if (oa)
-                        OBDO_FREE(oa);
-                if (pga)
-                        OBD_FREE(pga, sizeof(*pga) * page_count);
-                /* this should happen rarely and is pretty bad, it makes the
-                 * pending list not follow the dirty order */
-               while (!cfs_list_empty(ext_list)) {
-                       ext = cfs_list_entry(ext_list->next, struct osc_extent,
-                                            oe_link);
-                       cfs_list_del_init(&ext->oe_link);
+               if (oa)
+                       OBDO_FREE(oa);
+               if (pga)
+                       OBD_FREE(pga, sizeof(*pga) * page_count);
+               /* this should happen rarely and is pretty bad, it makes the
+                * pending list not follow the dirty order */
+               while (!list_empty(ext_list)) {
+                       ext = list_entry(ext_list->next, struct osc_extent,
+                                        oe_link);
+                       list_del_init(&ext->oe_link);
                        osc_extent_finish(env, ext, 0, rc);
                }
                if (clerq && !IS_ERR(clerq))
@@ -2258,17 +2112,17 @@ static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
         LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
 
         lock_res_and_lock(lock);
-        cfs_spin_lock(&osc_ast_guard);
+       spin_lock(&osc_ast_guard);
 
-        if (lock->l_ast_data == NULL)
-                lock->l_ast_data = data;
-        if (lock->l_ast_data == data)
-                set = 1;
+       if (lock->l_ast_data == NULL)
+               lock->l_ast_data = data;
+       if (lock->l_ast_data == data)
+               set = 1;
 
-        cfs_spin_unlock(&osc_ast_guard);
-        unlock_res_and_lock(lock);
+       spin_unlock(&osc_ast_guard);
+       unlock_res_and_lock(lock);
 
-        return set;
+       return set;
 }
 
 static int osc_set_data_with_check(struct lustre_handle *lockh,
@@ -2292,7 +2146,7 @@ static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
         struct ldlm_res_id res_id;
         struct obd_device *obd = class_exp2obd(exp);
 
-        osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
+       ostid_build_res_name(&lsm->lsm_oi, &res_id);
         ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
         return 0;
 }
@@ -2308,7 +2162,7 @@ static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
         struct obd_device *obd = class_exp2obd(exp);
         int rc = 0;
 
-        osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
+       ostid_build_res_name(&lsm->lsm_oi, &res_id);
         rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
         if (rc == LDLM_ITER_STOP)
                 return(1);
@@ -2332,6 +2186,8 @@ static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
                                                      &RMF_DLM_REP);
 
                         LASSERT(rep != NULL);
+                       rep->lock_policy_res1 =
+                               ptlrpc_status_ntoh(rep->lock_policy_res1);
                         if (rep->lock_policy_res1)
                                 rc = rep->lock_policy_res1;
                 }
@@ -2375,6 +2231,9 @@ static int osc_enqueue_interpret(const struct lu_env *env,
          * osc_enqueue_fini(). */
         ldlm_lock_addref(&handle, mode);
 
+       /* Let cl_lock_state_wait fail with -ERESTARTSYS to unuse sublocks. */
+       OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_HANG, 2);
+
         /* Let CP AST to grant the lock first. */
         OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
 
@@ -2411,51 +2270,6 @@ static int osc_enqueue_interpret(const struct lu_env *env,
         return rc;
 }
 
-void osc_update_enqueue(struct lustre_handle *lov_lockhp,
-                        struct lov_oinfo *loi, int flags,
-                        struct ost_lvb *lvb, __u32 mode, int rc)
-{
-        struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
-
-        if (rc == ELDLM_OK) {
-                __u64 tmp;
-
-                LASSERT(lock != NULL);
-                loi->loi_lvb = *lvb;
-                tmp = loi->loi_lvb.lvb_size;
-                /* Extend KMS up to the end of this lock and no further
-                 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
-                if (tmp > lock->l_policy_data.l_extent.end)
-                        tmp = lock->l_policy_data.l_extent.end + 1;
-                if (tmp >= loi->loi_kms) {
-                        LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
-                                   ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
-                        loi_kms_set(loi, tmp);
-                } else {
-                        LDLM_DEBUG(lock, "lock acquired, setting rss="
-                                   LPU64"; leaving kms="LPU64", end="LPU64,
-                                   loi->loi_lvb.lvb_size, loi->loi_kms,
-                                   lock->l_policy_data.l_extent.end);
-                }
-                ldlm_lock_allow_match(lock);
-        } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
-                LASSERT(lock != NULL);
-                loi->loi_lvb = *lvb;
-                ldlm_lock_allow_match(lock);
-                CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
-                       " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
-                rc = ELDLM_OK;
-        }
-
-        if (lock != NULL) {
-                if (rc != ELDLM_OK)
-                        ldlm_lock_fail_match(lock);
-
-                LDLM_LOCK_PUT(lock);
-        }
-}
-EXPORT_SYMBOL(osc_update_enqueue);
-
 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
 
 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
@@ -2467,19 +2281,19 @@ struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
  * release locks just after they are obtained. */
 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
                     __u64 *flags, ldlm_policy_data_t *policy,
-                     struct ost_lvb *lvb, int kms_valid,
-                     obd_enqueue_update_f upcall, void *cookie,
-                     struct ldlm_enqueue_info *einfo,
-                     struct lustre_handle *lockh,
-                     struct ptlrpc_request_set *rqset, int async, int agl)
+                    struct ost_lvb *lvb, int kms_valid,
+                    obd_enqueue_update_f upcall, void *cookie,
+                    struct ldlm_enqueue_info *einfo,
+                    struct lustre_handle *lockh,
+                    struct ptlrpc_request_set *rqset, int async, int agl)
 {
-        struct obd_device *obd = exp->exp_obd;
-        struct ptlrpc_request *req = NULL;
-        int intent = *flags & LDLM_FL_HAS_INTENT;
-        int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
-        ldlm_mode_t mode;
-        int rc;
-        ENTRY;
+       struct obd_device *obd = exp->exp_obd;
+       struct ptlrpc_request *req = NULL;
+       int intent = *flags & LDLM_FL_HAS_INTENT;
+       __u64 match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
+       ldlm_mode_t mode;
+       int rc;
+       ENTRY;
 
         /* Filesystem lock extents are extended to page boundaries so that
          * dealing with the page cache is a little smoother.  */
@@ -2515,7 +2329,7 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
         if (mode) {
                 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
 
-                if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
+               if ((agl != 0) && !ldlm_is_lvb_ready(matched)) {
                         /* For AGL, if enqueue RPC is sent but the lock is not
                          * granted, then skip to process this strpe.
                          * Return -ECANCELED to tell the caller. */
@@ -2555,14 +2369,13 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
 
  no_match:
         if (intent) {
-                CFS_LIST_HEAD(cancels);
-                req = ptlrpc_request_alloc(class_exp2cliimp(exp),
-                                           &RQF_LDLM_ENQUEUE_LVB);
-                if (req == NULL)
-                        RETURN(-ENOMEM);
+               req = ptlrpc_request_alloc(class_exp2cliimp(exp),
+                                          &RQF_LDLM_ENQUEUE_LVB);
+               if (req == NULL)
+                       RETURN(-ENOMEM);
 
-                rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
-                if (rc) {
+               rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_ENQUEUE);
+               if (rc < 0) {
                         ptlrpc_request_free(req);
                         RETURN(rc);
                 }
@@ -2576,7 +2389,7 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
         *flags &= ~LDLM_FL_BLOCK_GRANTED;
 
         rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
-                              sizeof(*lvb), lockh, async);
+                             sizeof(*lvb), LVB_T_OST, lockh, async);
         if (rqset) {
                 if (!rc) {
                         struct osc_enqueue_args *aa;
@@ -2610,34 +2423,15 @@ int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
         RETURN(rc);
 }
 
-static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
-                       struct ldlm_enqueue_info *einfo,
-                       struct ptlrpc_request_set *rqset)
-{
-        struct ldlm_res_id res_id;
-        int rc;
-        ENTRY;
-
-        osc_build_res_name(oinfo->oi_md->lsm_object_id,
-                           oinfo->oi_md->lsm_object_seq, &res_id);
-
-        rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
-                              &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
-                              oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
-                              oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
-                              rqset, rqset != NULL, 0);
-        RETURN(rc);
-}
-
 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
-                   __u32 type, ldlm_policy_data_t *policy, __u32 mode,
-                   int *flags, void *data, struct lustre_handle *lockh,
-                   int unref)
+                  __u32 type, ldlm_policy_data_t *policy, __u32 mode,
+                  __u64 *flags, void *data, struct lustre_handle *lockh,
+                  int unref)
 {
-        struct obd_device *obd = exp->exp_obd;
-        int lflags = *flags;
-        ldlm_mode_t rc;
-        ENTRY;
+       struct obd_device *obd = exp->exp_obd;
+       __u64 lflags = *flags;
+       ldlm_mode_t rc;
+       ENTRY;
 
         if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
                 RETURN(-EIO);
@@ -2685,29 +2479,6 @@ int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
         RETURN(0);
 }
 
-static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
-                      __u32 mode, struct lustre_handle *lockh)
-{
-        ENTRY;
-        RETURN(osc_cancel_base(lockh, mode));
-}
-
-static int osc_cancel_unused(struct obd_export *exp,
-                             struct lov_stripe_md *lsm,
-                             ldlm_cancel_flags_t flags,
-                             void *opaque)
-{
-        struct obd_device *obd = class_exp2obd(exp);
-        struct ldlm_res_id res_id, *resp = NULL;
-
-        if (lsm != NULL) {
-                resp = osc_build_res_name(lsm->lsm_object_id,
-                                          lsm->lsm_object_seq, &res_id);
-        }
-
-        return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
-}
-
 static int osc_statfs_interpret(const struct lu_env *env,
                                 struct ptlrpc_request *req,
                                 struct osc_async_args *aa, int rc)
@@ -2797,10 +2568,10 @@ static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
 
         /*Since the request might also come from lprocfs, so we need
          *sync this with client_disconnect_export Bug15684*/
-        cfs_down_read(&obd->u.cli.cl_sem);
+       down_read(&obd->u.cli.cl_sem);
         if (obd->u.cli.cl_import)
                 imp = class_import_get(obd->u.cli.cl_import);
-        cfs_up_read(&obd->u.cli.cl_sem);
+       up_read(&obd->u.cli.cl_sem);
         if (!imp)
                 RETURN(-ENODEV);
 
@@ -2849,70 +2620,6 @@ static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
         return rc;
 }
 
-/* Retrieve object striping information.
- *
- * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
- * the maximum number of OST indices which will fit in the user buffer.
- * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
- */
-static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
-{
-        /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
-        struct lov_user_md_v3 lum, *lumk;
-        struct lov_user_ost_data_v1 *lmm_objects;
-        int rc = 0, lum_size;
-        ENTRY;
-
-        if (!lsm)
-                RETURN(-ENODATA);
-
-        /* we only need the header part from user space to get lmm_magic and
-         * lmm_stripe_count, (the header part is common to v1 and v3) */
-        lum_size = sizeof(struct lov_user_md_v1);
-        if (cfs_copy_from_user(&lum, lump, lum_size))
-                RETURN(-EFAULT);
-
-        if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
-            (lum.lmm_magic != LOV_USER_MAGIC_V3))
-                RETURN(-EINVAL);
-
-        /* lov_user_md_vX and lov_mds_md_vX must have the same size */
-        LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
-        LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
-        LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
-
-        /* we can use lov_mds_md_size() to compute lum_size
-         * because lov_user_md_vX and lov_mds_md_vX have the same size */
-        if (lum.lmm_stripe_count > 0) {
-                lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
-                OBD_ALLOC(lumk, lum_size);
-                if (!lumk)
-                        RETURN(-ENOMEM);
-
-                if (lum.lmm_magic == LOV_USER_MAGIC_V1)
-                        lmm_objects = &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
-                else
-                        lmm_objects = &(lumk->lmm_objects[0]);
-                lmm_objects->l_object_id = lsm->lsm_object_id;
-        } else {
-                lum_size = lov_mds_md_size(0, lum.lmm_magic);
-                lumk = &lum;
-        }
-
-        lumk->lmm_object_id = lsm->lsm_object_id;
-        lumk->lmm_object_seq = lsm->lsm_object_seq;
-        lumk->lmm_stripe_count = 1;
-
-        if (cfs_copy_to_user(lump, lumk, lum_size))
-                rc = -EFAULT;
-
-        if (lumk != &lum)
-                OBD_FREE(lumk, lum_size);
-
-        RETURN(rc);
-}
-
-
 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                          void *karg, void *uarg)
 {
@@ -2921,58 +2628,12 @@ static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
         int err = 0;
         ENTRY;
 
-        if (!cfs_try_module_get(THIS_MODULE)) {
-                CERROR("Can't get module. Is it alive?");
-                return -EINVAL;
-        }
+       if (!try_module_get(THIS_MODULE)) {
+               CERROR("%s: cannot get module '%s'\n", obd->obd_name,
+                      module_name(THIS_MODULE));
+               return -EINVAL;
+       }
         switch (cmd) {
-        case OBD_IOC_LOV_GET_CONFIG: {
-                char *buf;
-                struct lov_desc *desc;
-                struct obd_uuid uuid;
-
-                buf = NULL;
-                len = 0;
-                if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
-                        GOTO(out, err = -EINVAL);
-
-                data = (struct obd_ioctl_data *)buf;
-
-                if (sizeof(*desc) > data->ioc_inllen1) {
-                        obd_ioctl_freedata(buf, len);
-                        GOTO(out, err = -EINVAL);
-                }
-
-                if (data->ioc_inllen2 < sizeof(uuid)) {
-                        obd_ioctl_freedata(buf, len);
-                        GOTO(out, err = -EINVAL);
-                }
-
-                desc = (struct lov_desc *)data->ioc_inlbuf1;
-                desc->ld_tgt_count = 1;
-                desc->ld_active_tgt_count = 1;
-                desc->ld_default_stripe_count = 1;
-                desc->ld_default_stripe_size = 0;
-                desc->ld_default_stripe_offset = 0;
-                desc->ld_pattern = 0;
-                memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
-
-                memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
-
-                err = cfs_copy_to_user((void *)uarg, buf, len);
-                if (err)
-                        err = -EFAULT;
-                obd_ioctl_freedata(buf, len);
-                GOTO(out, err);
-        }
-        case LL_IOC_LOV_SETSTRIPE:
-                err = obd_alloc_memmd(exp, karg);
-                if (err > 0)
-                        err = 0;
-                GOTO(out, err);
-        case LL_IOC_LOV_GETSTRIPE:
-                err = osc_getstripe(karg, uarg);
-                GOTO(out, err);
         case OBD_IOC_CLIENT_RECOVER:
                 err = ptlrpc_recover_import(obd->u.cli.cl_import,
                                             data->ioc_inlbuf1, 0);
@@ -2989,14 +2650,14 @@ static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
         case OBD_IOC_PING_TARGET:
                 err = ptlrpc_obd_ping(obd);
                 GOTO(out, err);
-        default:
-                CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
-                       cmd, cfs_curproc_comm());
-                GOTO(out, err = -ENOTTY);
-        }
+       default:
+               CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
+                      cmd, current_comm());
+               GOTO(out, err = -ENOTTY);
+       }
 out:
-        cfs_module_put(THIS_MODULE);
-        return err;
+       module_put(THIS_MODULE);
+       return err;
 }
 
 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
@@ -3049,15 +2710,52 @@ static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
                 ptlrpc_req_finished(req);
                 RETURN(rc);
         } else if (KEY_IS(KEY_FIEMAP)) {
-                struct ptlrpc_request *req;
-                struct ll_user_fiemap *reply;
-                char *tmp;
-                int rc;
+               struct ll_fiemap_info_key *fm_key =
+                               (struct ll_fiemap_info_key *)key;
+               struct ldlm_res_id       res_id;
+               ldlm_policy_data_t       policy;
+               struct lustre_handle     lockh;
+               ldlm_mode_t              mode = 0;
+               struct ptlrpc_request   *req;
+               struct ll_user_fiemap   *reply;
+               char                    *tmp;
+               int                      rc;
+
+               if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC))
+                       goto skip_locking;
+
+               policy.l_extent.start = fm_key->fiemap.fm_start &
+                                               CFS_PAGE_MASK;
+
+               if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
+                   fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1)
+                       policy.l_extent.end = OBD_OBJECT_EOF;
+               else
+                       policy.l_extent.end = (fm_key->fiemap.fm_start +
+                               fm_key->fiemap.fm_length +
+                               PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK;
+
+               ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
+               mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
+                                      LDLM_FL_BLOCK_GRANTED |
+                                      LDLM_FL_LVB_READY,
+                                      &res_id, LDLM_EXTENT, &policy,
+                                      LCK_PR | LCK_PW, &lockh, 0);
+               if (mode) { /* lock is cached on client */
+                       if (mode != LCK_PR) {
+                               ldlm_lock_addref(&lockh, LCK_PR);
+                               ldlm_lock_decref(&lockh, LCK_PW);
+                       }
+               } else { /* no cached lock, needs acquire lock on server side */
+                       fm_key->oa.o_valid |= OBD_MD_FLFLAGS;
+                       fm_key->oa.o_flags |= OBD_FL_SRVLOCK;
+               }
 
+skip_locking:
                 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
                                            &RQF_OST_GET_INFO_FIEMAP);
                 if (req == NULL)
-                        RETURN(-ENOMEM);
+                       GOTO(drop_lock, rc = -ENOMEM);
 
                 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
                                      RCL_CLIENT, keylen);
@@ -3069,7 +2767,7 @@ static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
                 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
                 if (rc) {
                         ptlrpc_request_free(req);
-                        RETURN(rc);
+                       GOTO(drop_lock, rc);
                 }
 
                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
@@ -3080,16 +2778,18 @@ static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
                 ptlrpc_request_set_replen(req);
                 rc = ptlrpc_queue_wait(req);
                 if (rc)
-                        GOTO(out1, rc);
+                       GOTO(fini_req, rc);
 
                 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
                 if (reply == NULL)
-                        GOTO(out1, rc = -EPROTO);
+                       GOTO(fini_req, rc = -EPROTO);
 
                 memcpy(val, reply, *vallen);
-        out1:
+fini_req:
                 ptlrpc_req_finished(req);
-
+drop_lock:
+               if (mode)
+                       ldlm_lock_decref(&lockh, LCK_PR);
                 RETURN(rc);
         }
 
@@ -3131,24 +2831,24 @@ static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
 
                LASSERT(cli->cl_cache == NULL); /* only once */
                cli->cl_cache = (struct cl_client_cache *)val;
-               cfs_atomic_inc(&cli->cl_cache->ccc_users);
+               atomic_inc(&cli->cl_cache->ccc_users);
                cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
 
                /* add this osc into entity list */
-               LASSERT(cfs_list_empty(&cli->cl_lru_osc));
-               cfs_spin_lock(&cli->cl_cache->ccc_lru_lock);
-               cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
-               cfs_spin_unlock(&cli->cl_cache->ccc_lru_lock);
+               LASSERT(list_empty(&cli->cl_lru_osc));
+               spin_lock(&cli->cl_cache->ccc_lru_lock);
+               list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
+               spin_unlock(&cli->cl_cache->ccc_lru_lock);
 
                RETURN(0);
        }
 
        if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
                struct client_obd *cli = &obd->u.cli;
-               int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
+               int nr = atomic_read(&cli->cl_lru_in_list) >> 1;
                int target = *(int *)val;
 
-               nr = osc_lru_shrink(cli, min(nr, target));
+               nr = osc_lru_shrink(env, cli, min(nr, target), true);
                *(int *)val -= nr;
                RETURN(0);
        }
@@ -3163,27 +2863,28 @@ static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
            Even if something bad goes through, we'd get a -EINVAL from OST
            anyway. */
 
-        if (KEY_IS(KEY_GRANT_SHRINK))
-                req = ptlrpc_request_alloc(imp, &RQF_OST_SET_GRANT_INFO);
-        else
-                req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
-
-        if (req == NULL)
-                RETURN(-ENOMEM);
-
-        req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
-                             RCL_CLIENT, keylen);
-        req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
-                             RCL_CLIENT, vallen);
-        rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
-        if (rc) {
-                ptlrpc_request_free(req);
-                RETURN(rc);
-        }
+       req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
+                                               &RQF_OST_SET_GRANT_INFO :
+                                               &RQF_OBD_SET_INFO);
+       if (req == NULL)
+               RETURN(-ENOMEM);
+
+       req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
+                            RCL_CLIENT, keylen);
+       if (!KEY_IS(KEY_GRANT_SHRINK))
+               req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
+                                    RCL_CLIENT, vallen);
+       rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
+       if (rc) {
+               ptlrpc_request_free(req);
+               RETURN(rc);
+       }
 
-        tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
-        memcpy(tmp, key, keylen);
-        tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
+       tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
+       memcpy(tmp, key, keylen);
+       tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
+                                                       &RMF_OST_BODY :
+                                                       &RMF_SETINFO_VAL);
         memcpy(tmp, val, vallen);
 
        if (KEY_IS(KEY_GRANT_SHRINK)) {
@@ -3213,34 +2914,6 @@ static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
         RETURN(0);
 }
 
-
-static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
-                         struct obd_device *disk_obd, int *index)
-{
-       /* this code is not supposed to be used with LOD/OSP
-        * to be removed soon */
-       LBUG();
-       return 0;
-}
-
-static int osc_llog_finish(struct obd_device *obd, int count)
-{
-       struct llog_ctxt *ctxt;
-
-       ENTRY;
-
-       ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
-       if (ctxt) {
-               llog_cat_close(NULL, ctxt->loc_handle);
-               llog_cleanup(NULL, ctxt);
-       }
-
-       ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
-       if (ctxt)
-               llog_cleanup(NULL, ctxt);
-       RETURN(0);
-}
-
 static int osc_reconnect(const struct lu_env *env,
                          struct obd_export *exp, struct obd_device *obd,
                          struct obd_uuid *cluuid,
@@ -3252,9 +2925,10 @@ static int osc_reconnect(const struct lu_env *env,
         if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
                 long lost_grant;
 
-                client_obd_list_lock(&cli->cl_loi_list_lock);
-                data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
-                                2 * cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
+               client_obd_list_lock(&cli->cl_loi_list_lock);
+               data->ocd_grant = (cli->cl_avail_grant +
+                                 (cli->cl_dirty_pages << PAGE_CACHE_SHIFT)) ?:
+                                 2 * cli_brw_size(obd);
                 lost_grant = cli->cl_lost_grant;
                 cli->cl_lost_grant = 0;
                 client_obd_list_unlock(&cli->cl_loi_list_lock);
@@ -3390,23 +3064,17 @@ static int osc_import_event(struct obd_device *obd,
  * \retval zero the lock can't be canceled
  * \retval other ok to cancel
  */
-static int osc_cancel_for_recovery(struct ldlm_lock *lock)
+static int osc_cancel_weight(struct ldlm_lock *lock)
 {
-        check_res_locked(lock->l_resource);
-
-        /*
-         * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
-         *
-         * XXX as a future improvement, we can also cancel unused write lock
-         * if it doesn't have dirty data and active mmaps.
-         */
-        if (lock->l_resource->lr_type == LDLM_EXTENT &&
-            (lock->l_granted_mode == LCK_PR ||
-             lock->l_granted_mode == LCK_CR) &&
-            (osc_dlm_lock_pageref(lock) == 0))
-                RETURN(1);
+       /*
+        * Cancel all unused and granted extent lock.
+        */
+       if (lock->l_resource->lr_type == LDLM_EXTENT &&
+           lock->l_granted_mode == lock->l_req_mode &&
+           osc_ldlm_weigh_ast(lock) == 0)
+               RETURN(1);
 
-        RETURN(0);
+       RETURN(0);
 }
 
 static int brw_queue_work(const struct lu_env *env, void *data)
@@ -3421,10 +3089,10 @@ static int brw_queue_work(const struct lu_env *env, void *data)
 
 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 {
-       struct lprocfs_static_vars lvars = { 0 };
-       struct client_obd          *cli = &obd->u.cli;
-       void                       *handler;
-       int                        rc;
+       struct client_obd *cli = &obd->u.cli;
+       struct obd_type   *type;
+       void              *handler;
+       int                rc;
        ENTRY;
 
        rc = ptlrpcd_addref();
@@ -3440,13 +3108,42 @@ int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
                GOTO(out_client_setup, rc = PTR_ERR(handler));
        cli->cl_writeback_work = handler;
 
+       handler = ptlrpcd_alloc_work(cli->cl_import, lru_queue_work, cli);
+       if (IS_ERR(handler))
+               GOTO(out_ptlrpcd_work, rc = PTR_ERR(handler));
+       cli->cl_lru_work = handler;
+
        rc = osc_quota_setup(obd);
        if (rc)
                GOTO(out_ptlrpcd_work, rc);
 
        cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
-       lprocfs_osc_init_vars(&lvars);
-       if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
+
+#ifdef LPROCFS
+       obd->obd_vars = lprocfs_osc_obd_vars;
+#endif
+       /* If this is true then both client (osc) and server (osp) are on the
+        * same node. The osp layer if loaded first will register the osc proc
+        * directory. In that case this obd_device will be attached its proc
+        * tree to type->typ_procsym instead of obd->obd_type->typ_procroot. */
+       type = class_search_type(LUSTRE_OSP_NAME);
+       if (type && type->typ_procsym) {
+               obd->obd_proc_entry = lprocfs_seq_register(obd->obd_name,
+                                                          type->typ_procsym,
+                                                          obd->obd_vars, obd);
+               if (IS_ERR(obd->obd_proc_entry)) {
+                       rc = PTR_ERR(obd->obd_proc_entry);
+                       CERROR("error %d setting up lprocfs for %s\n", rc,
+                              obd->obd_name);
+                       obd->obd_proc_entry = NULL;
+               }
+       } else {
+               rc = lprocfs_seq_obd_setup(obd);
+       }
+
+       /* If the basic OSC proc tree construction succeeded then
+        * lets do the rest. */
+       if (rc == 0) {
                lproc_osc_attach_seqstat(obd);
                sptlrpc_lprocfs_cliobd_attach(obd);
                ptlrpc_lprocfs_register_obd(obd);
@@ -3462,12 +3159,19 @@ int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
                                    OST_MAXREQSIZE,
                                    ptlrpc_add_rqs_to_pool);
 
-       CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
-       ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
-       RETURN(rc);
+       INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
+       ns_register_cancel(obd->obd_namespace, osc_cancel_weight);
+       RETURN(0);
 
 out_ptlrpcd_work:
-       ptlrpcd_destroy_work(handler);
+       if (cli->cl_writeback_work != NULL) {
+               ptlrpcd_destroy_work(cli->cl_writeback_work);
+               cli->cl_writeback_work = NULL;
+       }
+       if (cli->cl_lru_work != NULL) {
+               ptlrpcd_destroy_work(cli->cl_lru_work);
+               cli->cl_lru_work = NULL;
+       }
 out_client_setup:
        client_obd_cleanup(obd);
 out_ptlrpcd:
@@ -3487,9 +3191,9 @@ static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
                 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
                 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
                 ptlrpc_deactivate_import(imp);
-                cfs_spin_lock(&imp->imp_lock);
-                imp->imp_pingable = 0;
-                cfs_spin_unlock(&imp->imp_lock);
+               spin_lock(&imp->imp_lock);
+               imp->imp_pingable = 0;
+               spin_unlock(&imp->imp_lock);
                 break;
         }
         case OBD_CLEANUP_EXPORTS: {
@@ -3508,6 +3212,10 @@ static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
                         ptlrpcd_destroy_work(cli->cl_writeback_work);
                         cli->cl_writeback_work = NULL;
                 }
+               if (cli->cl_lru_work) {
+                       ptlrpcd_destroy_work(cli->cl_lru_work);
+                       cli->cl_lru_work = NULL;
+               }
                 obd_cleanup_client_import(obd);
                 ptlrpc_lprocfs_unregister_obd(obd);
                 lprocfs_obd_cleanup(obd);
@@ -3529,12 +3237,12 @@ int osc_cleanup(struct obd_device *obd)
 
        /* lru cleanup */
        if (cli->cl_cache != NULL) {
-               LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
-               cfs_spin_lock(&cli->cl_cache->ccc_lru_lock);
-               cfs_list_del_init(&cli->cl_lru_osc);
-               cfs_spin_unlock(&cli->cl_cache->ccc_lru_lock);
+               LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0);
+               spin_lock(&cli->cl_cache->ccc_lru_lock);
+               list_del_init(&cli->cl_lru_osc);
+               spin_unlock(&cli->cl_cache->ccc_lru_lock);
                cli->cl_lru_left = NULL;
-               cfs_atomic_dec(&cli->cl_cache->ccc_users);
+               atomic_dec(&cli->cl_cache->ccc_users);
                cli->cl_cache = NULL;
        }
 
@@ -3549,21 +3257,9 @@ int osc_cleanup(struct obd_device *obd)
 
 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
 {
-        struct lprocfs_static_vars lvars = { 0 };
-        int rc = 0;
-
-        lprocfs_osc_init_vars(&lvars);
-
-        switch (lcfg->lcfg_command) {
-        default:
-                rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
-                                              lcfg, obd);
-                if (rc > 0)
-                        rc = 0;
-                break;
-        }
-
-        return(rc);
+       int rc = class_process_proc_seq_param(PARAM_OSC, obd->obd_vars,
+                                             lcfg, obd);
+       return rc > 0 ? 0: rc;
 }
 
 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
@@ -3583,7 +3279,6 @@ struct obd_ops osc_obd_ops = {
         .o_disconnect           = osc_disconnect,
         .o_statfs               = osc_statfs,
         .o_statfs_async         = osc_statfs_async,
-        .o_packmd               = osc_packmd,
         .o_unpackmd             = osc_unpackmd,
         .o_create               = osc_create,
         .o_destroy              = osc_destroy,
@@ -3591,34 +3286,27 @@ struct obd_ops osc_obd_ops = {
         .o_getattr_async        = osc_getattr_async,
         .o_setattr              = osc_setattr,
         .o_setattr_async        = osc_setattr_async,
-        .o_brw                  = osc_brw,
-        .o_punch                = osc_punch,
-        .o_sync                 = osc_sync,
-        .o_enqueue              = osc_enqueue,
         .o_change_cbdata        = osc_change_cbdata,
         .o_find_cbdata          = osc_find_cbdata,
-        .o_cancel               = osc_cancel,
-        .o_cancel_unused        = osc_cancel_unused,
         .o_iocontrol            = osc_iocontrol,
         .o_get_info             = osc_get_info,
         .o_set_info_async       = osc_set_info_async,
         .o_import_event         = osc_import_event,
-        .o_llog_init            = osc_llog_init,
-        .o_llog_finish          = osc_llog_finish,
         .o_process_config       = osc_process_config,
         .o_quotactl             = osc_quotactl,
         .o_quotacheck           = osc_quotacheck,
 };
 
 extern struct lu_kmem_descr osc_caches[];
-extern cfs_spinlock_t       osc_ast_guard;
-extern cfs_lock_class_key_t osc_ast_guard_class;
+extern spinlock_t osc_ast_guard;
+extern struct lock_class_key osc_ast_guard_class;
 
 int __init osc_init(void)
 {
-        struct lprocfs_static_vars lvars = { 0 };
-        int rc;
-        ENTRY;
+       bool enable_proc = true;
+       struct obd_type *type;
+       int rc;
+       ENTRY;
 
         /* print an address of _any_ initialized kernel symbol from this
          * module, to allow debugging with gdb that doesn't support data
@@ -3626,20 +3314,27 @@ int __init osc_init(void)
         CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
 
         rc = lu_kmem_init(osc_caches);
+       if (rc)
+               RETURN(rc);
 
-        lprocfs_osc_init_vars(&lvars);
+       type = class_search_type(LUSTRE_OSP_NAME);
+       if (type != NULL && type->typ_procsym != NULL)
+               enable_proc = false;
 
-        rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
-                                 LUSTRE_OSC_NAME, &osc_device_type);
+       rc = class_register_type(&osc_obd_ops, NULL, enable_proc, NULL,
+#ifndef HAVE_ONLY_PROCFS_SEQ
+                                NULL,
+#endif
+                                LUSTRE_OSC_NAME, &osc_device_type);
         if (rc) {
                 lu_kmem_fini(osc_caches);
                 RETURN(rc);
         }
 
-        cfs_spin_lock_init(&osc_ast_guard);
-        cfs_lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
+       spin_lock_init(&osc_ast_guard);
+       lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
 
-        RETURN(rc);
+       RETURN(rc);
 }
 
 #ifdef __KERNEL__