4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/layout.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 * This file contains the "capsule/pill" abstraction layered above PTLRPC.
45 * Every struct ptlrpc_request contains a "pill", which points to a description
46 * of the format that the request conforms to.
49 #if !defined(__REQ_LAYOUT_USER__)
51 #define DEBUG_SUBSYSTEM S_RPC
54 #include <linux/module.h>
56 # include <liblustre.h>
59 /* LUSTRE_VERSION_CODE */
60 #include <lustre_ver.h>
62 #include <obd_support.h>
63 /* lustre_swab_mdt_body */
64 #include <lustre/lustre_idl.h>
65 /* obd2cli_tgt() (required by DEBUG_REQ()) */
68 /* __REQ_LAYOUT_USER__ */
70 /* struct ptlrpc_request, lustre_msg* */
71 #include <lustre_req_layout.h>
72 #include <lustre_acl.h>
73 #include <lustre_debug.h>
76 * RQFs (see below) refer to two struct req_msg_field arrays describing the
77 * client request and server reply, respectively.
79 /* empty set of fields... for suitable definition of emptiness. */
80 static const struct req_msg_field *empty[] = {
84 static const struct req_msg_field *mgs_target_info_only[] = {
89 static const struct req_msg_field *mgs_set_info[] = {
94 static const struct req_msg_field *mgs_config_read_client[] = {
99 static const struct req_msg_field *mgs_config_read_server[] = {
104 static const struct req_msg_field *log_cancel_client[] = {
109 static const struct req_msg_field *mdt_body_only[] = {
114 static const struct req_msg_field *mdt_body_capa[] = {
120 static const struct req_msg_field *quotactl_only[] = {
125 static const struct req_msg_field *quota_body_only[] = {
130 static const struct req_msg_field *ldlm_intent_quota_client[] = {
137 static const struct req_msg_field *ldlm_intent_quota_server[] = {
144 static const struct req_msg_field *mdt_close_client[] = {
151 static const struct req_msg_field *obd_statfs_server[] = {
156 static const struct req_msg_field *seq_query_client[] = {
162 static const struct req_msg_field *seq_query_server[] = {
167 static const struct req_msg_field *fld_query_client[] = {
173 static const struct req_msg_field *fld_query_server[] = {
178 static const struct req_msg_field *mds_getattr_name_client[] = {
185 static const struct req_msg_field *mds_reint_client[] = {
190 static const struct req_msg_field *mds_reint_create_client[] = {
197 static const struct req_msg_field *mds_reint_create_slave_client[] = {
206 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
215 static const struct req_msg_field *mds_reint_create_sym_client[] = {
224 static const struct req_msg_field *mds_reint_open_client[] = {
233 static const struct req_msg_field *mds_reint_open_server[] = {
242 static const struct req_msg_field *mds_reint_unlink_client[] = {
250 static const struct req_msg_field *mds_reint_link_client[] = {
259 static const struct req_msg_field *mds_reint_rename_client[] = {
269 static const struct req_msg_field *mds_last_unlink_server[] = {
278 static const struct req_msg_field *mds_reint_setattr_client[] = {
288 static const struct req_msg_field *mds_reint_setxattr_client[] = {
296 static const struct req_msg_field *obd_connect_client[] = {
304 static const struct req_msg_field *obd_connect_server[] = {
309 static const struct req_msg_field *obd_set_info_client[] = {
315 static const struct req_msg_field *ost_grant_shrink_client[] = {
321 static const struct req_msg_field *mds_getinfo_client[] = {
327 static const struct req_msg_field *mds_getinfo_server[] = {
332 static const struct req_msg_field *ldlm_enqueue_client[] = {
337 static const struct req_msg_field *ldlm_enqueue_server[] = {
342 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
348 static const struct req_msg_field *ldlm_cp_callback_client[] = {
354 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
360 static const struct req_msg_field *ldlm_gl_callback_server[] = {
365 static const struct req_msg_field *ldlm_intent_basic_client[] = {
371 static const struct req_msg_field *ldlm_intent_client[] = {
378 static const struct req_msg_field *ldlm_intent_server[] = {
386 static const struct req_msg_field *ldlm_intent_open_server[] = {
396 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
400 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
405 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
414 static const struct req_msg_field *ldlm_intent_create_client[] = {
418 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
424 static const struct req_msg_field *ldlm_intent_open_client[] = {
428 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
435 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
439 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
444 static const struct req_msg_field *mds_getxattr_client[] = {
452 static const struct req_msg_field *mds_getxattr_server[] = {
458 static const struct req_msg_field *mds_getattr_server[] = {
467 static const struct req_msg_field *mds_setattr_server[] = {
476 static const struct req_msg_field *llog_origin_handle_create_client[] = {
482 static const struct req_msg_field *llogd_body_only[] = {
487 static const struct req_msg_field *llog_log_hdr_only[] = {
492 static const struct req_msg_field *llogd_conn_body_only[] = {
497 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
503 static const struct req_msg_field *obd_idx_read_client[] = {
508 static const struct req_msg_field *obd_idx_read_server[] = {
513 static const struct req_msg_field *ost_body_only[] = {
518 static const struct req_msg_field *ost_body_capa[] = {
524 static const struct req_msg_field *ost_destroy_client[] = {
532 static const struct req_msg_field *ost_brw_client[] = {
540 static const struct req_msg_field *ost_brw_read_server[] = {
545 static const struct req_msg_field *ost_brw_write_server[] = {
551 static const struct req_msg_field *ost_get_info_generic_server[] = {
556 static const struct req_msg_field *ost_get_info_generic_client[] = {
561 static const struct req_msg_field *ost_get_last_id_server[] = {
566 static const struct req_msg_field *ost_get_fiemap_client[] = {
572 static const struct req_msg_field *ost_get_fiemap_server[] = {
577 static struct req_format *req_formats[] = {
584 &RQF_MGS_CONFIG_READ,
593 &RQF_MDS_GETATTR_NAME,
602 &RQF_MDS_DONE_WRITING,
604 &RQF_MDS_REINT_CREATE,
605 &RQF_MDS_REINT_CREATE_RMT_ACL,
606 &RQF_MDS_REINT_CREATE_SLAVE,
607 &RQF_MDS_REINT_CREATE_SYM,
609 &RQF_MDS_REINT_UNLINK,
611 &RQF_MDS_REINT_RENAME,
612 &RQF_MDS_REINT_SETATTR,
613 &RQF_MDS_REINT_SETXATTR,
630 &RQF_OST_SET_GRANT_INFO,
631 &RQF_OST_GET_INFO_GENERIC,
632 &RQF_OST_GET_INFO_LAST_ID,
633 &RQF_OST_GET_INFO_FIEMAP,
635 &RQF_LDLM_ENQUEUE_LVB,
639 &RQF_LDLM_CP_CALLBACK,
640 &RQF_LDLM_BL_CALLBACK,
641 &RQF_LDLM_GL_CALLBACK,
642 &RQF_LDLM_GL_DESC_CALLBACK,
644 &RQF_LDLM_INTENT_BASIC,
645 &RQF_LDLM_INTENT_GETATTR,
646 &RQF_LDLM_INTENT_OPEN,
647 &RQF_LDLM_INTENT_CREATE,
648 &RQF_LDLM_INTENT_UNLINK,
649 &RQF_LDLM_INTENT_QUOTA,
652 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
653 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
654 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
655 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
656 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
657 &RQF_LLOG_ORIGIN_CONNECT
660 struct req_msg_field {
661 const __u32 rmf_flags;
662 const char *rmf_name;
664 * Field length. (-1) means "variable length". If the
665 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
666 * but the actual size must be a whole multiple of \a rmf_size.
669 void (*rmf_swabber)(void *);
670 void (*rmf_dumper)(void *);
671 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
676 * The field is a string, must be NUL-terminated.
678 RMF_F_STRING = 1 << 0,
680 * The field's buffer size need not match the declared \a rmf_size.
682 RMF_F_NO_SIZE_CHECK = 1 << 1,
684 * The field's buffer size must be a whole multiple of the declared \a
685 * rmf_size and the \a rmf_swabber function must work on the declared \a
686 * rmf_size worth of bytes.
688 RMF_F_STRUCT_ARRAY = 1 << 2
696 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
697 .rmf_name = (name), \
698 .rmf_flags = (flags), \
699 .rmf_size = (size), \
700 .rmf_swabber = (void (*)(void*))(swabber), \
701 .rmf_dumper = (void (*)(void*))(dumper) \
704 struct req_msg_field RMF_GENERIC_DATA =
705 DEFINE_MSGF("generic_data", 0,
707 EXPORT_SYMBOL(RMF_GENERIC_DATA);
709 struct req_msg_field RMF_MGS_TARGET_INFO =
710 DEFINE_MSGF("mgs_target_info", 0,
711 sizeof(struct mgs_target_info),
712 lustre_swab_mgs_target_info, NULL);
713 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
715 struct req_msg_field RMF_MGS_SEND_PARAM =
716 DEFINE_MSGF("mgs_send_param", 0,
717 sizeof(struct mgs_send_param),
719 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
721 struct req_msg_field RMF_MGS_CONFIG_BODY =
722 DEFINE_MSGF("mgs_config_read request", 0,
723 sizeof(struct mgs_config_body),
724 lustre_swab_mgs_config_body, NULL);
725 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
727 struct req_msg_field RMF_MGS_CONFIG_RES =
728 DEFINE_MSGF("mgs_config_read reply ", 0,
729 sizeof(struct mgs_config_res),
730 lustre_swab_mgs_config_res, NULL);
731 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
733 struct req_msg_field RMF_U32 =
734 DEFINE_MSGF("generic u32", 0,
735 sizeof(__u32), lustre_swab_generic_32s, NULL);
736 EXPORT_SYMBOL(RMF_U32);
738 struct req_msg_field RMF_SETINFO_VAL =
739 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
740 EXPORT_SYMBOL(RMF_SETINFO_VAL);
742 struct req_msg_field RMF_GETINFO_KEY =
743 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
744 EXPORT_SYMBOL(RMF_GETINFO_KEY);
746 struct req_msg_field RMF_GETINFO_VALLEN =
747 DEFINE_MSGF("getinfo_vallen", 0,
748 sizeof(__u32), lustre_swab_generic_32s, NULL);
749 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
751 struct req_msg_field RMF_GETINFO_VAL =
752 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
753 EXPORT_SYMBOL(RMF_GETINFO_VAL);
755 struct req_msg_field RMF_SEQ_OPC =
756 DEFINE_MSGF("seq_query_opc", 0,
757 sizeof(__u32), lustre_swab_generic_32s, NULL);
758 EXPORT_SYMBOL(RMF_SEQ_OPC);
760 struct req_msg_field RMF_SEQ_RANGE =
761 DEFINE_MSGF("seq_query_range", 0,
762 sizeof(struct lu_seq_range),
763 lustre_swab_lu_seq_range, NULL);
764 EXPORT_SYMBOL(RMF_SEQ_RANGE);
766 struct req_msg_field RMF_FLD_OPC =
767 DEFINE_MSGF("fld_query_opc", 0,
768 sizeof(__u32), lustre_swab_generic_32s, NULL);
769 EXPORT_SYMBOL(RMF_FLD_OPC);
771 struct req_msg_field RMF_FLD_MDFLD =
772 DEFINE_MSGF("fld_query_mdfld", 0,
773 sizeof(struct lu_seq_range),
774 lustre_swab_lu_seq_range, NULL);
775 EXPORT_SYMBOL(RMF_FLD_MDFLD);
777 struct req_msg_field RMF_MDT_BODY =
778 DEFINE_MSGF("mdt_body", 0,
779 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
780 EXPORT_SYMBOL(RMF_MDT_BODY);
782 struct req_msg_field RMF_OBD_QUOTACTL =
783 DEFINE_MSGF("obd_quotactl", 0,
784 sizeof(struct obd_quotactl),
785 lustre_swab_obd_quotactl, NULL);
786 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
788 struct req_msg_field RMF_QUOTA_BODY =
789 DEFINE_MSGF("quota_body", 0,
790 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
791 EXPORT_SYMBOL(RMF_QUOTA_BODY);
793 struct req_msg_field RMF_MDT_EPOCH =
794 DEFINE_MSGF("mdt_ioepoch", 0,
795 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
796 EXPORT_SYMBOL(RMF_MDT_EPOCH);
798 struct req_msg_field RMF_PTLRPC_BODY =
799 DEFINE_MSGF("ptlrpc_body", 0,
800 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
801 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
803 struct req_msg_field RMF_OBD_STATFS =
804 DEFINE_MSGF("obd_statfs", 0,
805 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
806 EXPORT_SYMBOL(RMF_OBD_STATFS);
808 struct req_msg_field RMF_SETINFO_KEY =
809 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
810 EXPORT_SYMBOL(RMF_SETINFO_KEY);
812 struct req_msg_field RMF_NAME =
813 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
814 EXPORT_SYMBOL(RMF_NAME);
816 struct req_msg_field RMF_SYMTGT =
817 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
818 EXPORT_SYMBOL(RMF_SYMTGT);
820 struct req_msg_field RMF_TGTUUID =
821 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
823 EXPORT_SYMBOL(RMF_TGTUUID);
825 struct req_msg_field RMF_CLUUID =
826 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
828 EXPORT_SYMBOL(RMF_CLUUID);
830 struct req_msg_field RMF_STRING =
831 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
832 EXPORT_SYMBOL(RMF_STRING);
834 struct req_msg_field RMF_LLOGD_BODY =
835 DEFINE_MSGF("llogd_body", 0,
836 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
837 EXPORT_SYMBOL(RMF_LLOGD_BODY);
839 struct req_msg_field RMF_LLOG_LOG_HDR =
840 DEFINE_MSGF("llog_log_hdr", 0,
841 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
842 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
844 struct req_msg_field RMF_LLOGD_CONN_BODY =
845 DEFINE_MSGF("llogd_conn_body", 0,
846 sizeof(struct llogd_conn_body),
847 lustre_swab_llogd_conn_body, NULL);
848 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
851 * connection handle received in MDS_CONNECT request.
853 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
854 * that the client does not interpret at all.
856 struct req_msg_field RMF_CONN =
857 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
858 EXPORT_SYMBOL(RMF_CONN);
860 struct req_msg_field RMF_CONNECT_DATA =
862 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
863 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
864 sizeof(struct obd_connect_data),
866 /* For interoperability with 1.8 and 2.0 clients/servers.
867 * The RPC verification code allows larger RPC buffers, but not
868 * smaller buffers. Until we no longer need to keep compatibility
869 * with older servers/clients we can only check that the buffer
870 * size is at least as large as obd_connect_data_v1. That is not
871 * not in itself harmful, since the chance of just corrupting this
872 * field is low. See JIRA LU-16 for details. */
873 sizeof(struct obd_connect_data_v1),
875 lustre_swab_connect, NULL);
876 EXPORT_SYMBOL(RMF_CONNECT_DATA);
878 struct req_msg_field RMF_DLM_REQ =
879 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
880 sizeof(struct ldlm_request),
881 lustre_swab_ldlm_request, NULL);
882 EXPORT_SYMBOL(RMF_DLM_REQ);
884 struct req_msg_field RMF_DLM_REP =
885 DEFINE_MSGF("dlm_rep", 0,
886 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
887 EXPORT_SYMBOL(RMF_DLM_REP);
889 struct req_msg_field RMF_LDLM_INTENT =
890 DEFINE_MSGF("ldlm_intent", 0,
891 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
892 EXPORT_SYMBOL(RMF_LDLM_INTENT);
894 struct req_msg_field RMF_DLM_LVB =
895 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
896 EXPORT_SYMBOL(RMF_DLM_LVB);
898 struct req_msg_field RMF_DLM_GL_DESC =
899 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
900 lustre_swab_gl_desc, NULL);
901 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
903 struct req_msg_field RMF_MDT_MD =
904 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
905 EXPORT_SYMBOL(RMF_MDT_MD);
907 struct req_msg_field RMF_REC_REINT =
908 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
909 lustre_swab_mdt_rec_reint, NULL);
910 EXPORT_SYMBOL(RMF_REC_REINT);
912 /* FIXME: this length should be defined as a macro */
913 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
915 EXPORT_SYMBOL(RMF_EADATA);
917 struct req_msg_field RMF_ACL =
918 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
919 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
920 EXPORT_SYMBOL(RMF_ACL);
922 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
923 struct req_msg_field RMF_LOGCOOKIES =
924 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
925 sizeof(struct llog_cookie), NULL, NULL);
926 EXPORT_SYMBOL(RMF_LOGCOOKIES);
928 struct req_msg_field RMF_CAPA1 =
929 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
930 lustre_swab_lustre_capa, NULL);
931 EXPORT_SYMBOL(RMF_CAPA1);
933 struct req_msg_field RMF_CAPA2 =
934 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
935 lustre_swab_lustre_capa, NULL);
936 EXPORT_SYMBOL(RMF_CAPA2);
941 struct req_msg_field RMF_OST_BODY =
942 DEFINE_MSGF("ost_body", 0,
943 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
944 EXPORT_SYMBOL(RMF_OST_BODY);
946 struct req_msg_field RMF_OBD_IOOBJ =
947 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
948 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
949 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
951 struct req_msg_field RMF_NIOBUF_REMOTE =
952 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
953 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
955 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
957 struct req_msg_field RMF_RCS =
958 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
959 lustre_swab_generic_32s, dump_rcs);
960 EXPORT_SYMBOL(RMF_RCS);
962 struct req_msg_field RMF_OBD_ID =
963 DEFINE_MSGF("obd_id", 0,
964 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
965 EXPORT_SYMBOL(RMF_OBD_ID);
967 struct req_msg_field RMF_FIEMAP_KEY =
968 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
969 lustre_swab_fiemap, NULL);
970 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
972 struct req_msg_field RMF_FIEMAP_VAL =
973 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
974 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
976 struct req_msg_field RMF_IDX_INFO =
977 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
978 lustre_swab_idx_info, NULL);
979 EXPORT_SYMBOL(RMF_IDX_INFO);
990 const struct req_msg_field **d;
994 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1008 #define DEFINE_REQ_FMT0(name, client, server) \
1009 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1011 struct req_format RQF_OBD_PING =
1012 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1013 EXPORT_SYMBOL(RQF_OBD_PING);
1015 struct req_format RQF_OBD_SET_INFO =
1016 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1017 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1019 /* Read index file through the network */
1020 struct req_format RQF_OBD_IDX_READ =
1021 DEFINE_REQ_FMT0("OBD_IDX_READ",
1022 obd_idx_read_client, obd_idx_read_server);
1023 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1025 struct req_format RQF_SEC_CTX =
1026 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1027 EXPORT_SYMBOL(RQF_SEC_CTX);
1029 struct req_format RQF_MGS_TARGET_REG =
1030 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1031 mgs_target_info_only);
1032 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1034 struct req_format RQF_MGS_SET_INFO =
1035 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1037 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1039 struct req_format RQF_MGS_CONFIG_READ =
1040 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1041 mgs_config_read_server);
1042 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1044 struct req_format RQF_SEQ_QUERY =
1045 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1046 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1048 struct req_format RQF_FLD_QUERY =
1049 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1050 EXPORT_SYMBOL(RQF_FLD_QUERY);
1052 struct req_format RQF_LOG_CANCEL =
1053 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1054 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1056 struct req_format RQF_MDS_QUOTACHECK =
1057 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1058 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1060 struct req_format RQF_OST_QUOTACHECK =
1061 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1062 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1064 struct req_format RQF_MDS_QUOTACTL =
1065 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1066 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1068 struct req_format RQF_OST_QUOTACTL =
1069 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1070 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1072 struct req_format RQF_QC_CALLBACK =
1073 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1074 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1076 struct req_format RQF_QUOTA_DQACQ =
1077 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1078 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1080 struct req_format RQF_LDLM_INTENT_QUOTA =
1081 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1082 ldlm_intent_quota_client,
1083 ldlm_intent_quota_server);
1084 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1086 struct req_format RQF_MDS_GETSTATUS =
1087 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1088 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1090 struct req_format RQF_MDS_STATFS =
1091 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1092 EXPORT_SYMBOL(RQF_MDS_STATFS);
1094 struct req_format RQF_MDS_SYNC =
1095 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1096 EXPORT_SYMBOL(RQF_MDS_SYNC);
1098 struct req_format RQF_MDS_GETATTR =
1099 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1100 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1102 struct req_format RQF_MDS_GETXATTR =
1103 DEFINE_REQ_FMT0("MDS_GETXATTR",
1104 mds_getxattr_client, mds_getxattr_server);
1105 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1107 struct req_format RQF_MDS_GETATTR_NAME =
1108 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1109 mds_getattr_name_client, mds_getattr_server);
1110 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1112 struct req_format RQF_MDS_REINT =
1113 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1114 EXPORT_SYMBOL(RQF_MDS_REINT);
1116 struct req_format RQF_MDS_REINT_CREATE =
1117 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1118 mds_reint_create_client, mdt_body_capa);
1119 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1121 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1122 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1123 mds_reint_create_rmt_acl_client, mdt_body_capa);
1124 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1126 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1127 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1128 mds_reint_create_slave_client, mdt_body_capa);
1129 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1131 struct req_format RQF_MDS_REINT_CREATE_SYM =
1132 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1133 mds_reint_create_sym_client, mdt_body_capa);
1134 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1136 struct req_format RQF_MDS_REINT_OPEN =
1137 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1138 mds_reint_open_client, mds_reint_open_server);
1139 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1141 struct req_format RQF_MDS_REINT_UNLINK =
1142 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1143 mds_last_unlink_server);
1144 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1146 struct req_format RQF_MDS_REINT_LINK =
1147 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1148 mds_reint_link_client, mdt_body_only);
1149 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1151 struct req_format RQF_MDS_REINT_RENAME =
1152 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1153 mds_last_unlink_server);
1154 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1156 struct req_format RQF_MDS_REINT_SETATTR =
1157 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1158 mds_reint_setattr_client, mds_setattr_server);
1159 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1161 struct req_format RQF_MDS_REINT_SETXATTR =
1162 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1163 mds_reint_setxattr_client, mdt_body_only);
1164 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1166 struct req_format RQF_MDS_CONNECT =
1167 DEFINE_REQ_FMT0("MDS_CONNECT",
1168 obd_connect_client, obd_connect_server);
1169 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1171 struct req_format RQF_MDS_DISCONNECT =
1172 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1173 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1175 struct req_format RQF_MDS_GET_INFO =
1176 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1177 mds_getinfo_server);
1178 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1180 struct req_format RQF_LDLM_ENQUEUE =
1181 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1182 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1183 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1185 struct req_format RQF_LDLM_ENQUEUE_LVB =
1186 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1187 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1188 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1190 struct req_format RQF_LDLM_CONVERT =
1191 DEFINE_REQ_FMT0("LDLM_CONVERT",
1192 ldlm_enqueue_client, ldlm_enqueue_server);
1193 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1195 struct req_format RQF_LDLM_CANCEL =
1196 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1197 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1199 struct req_format RQF_LDLM_CALLBACK =
1200 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1201 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1203 struct req_format RQF_LDLM_CP_CALLBACK =
1204 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1205 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1207 struct req_format RQF_LDLM_BL_CALLBACK =
1208 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1209 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1211 struct req_format RQF_LDLM_GL_CALLBACK =
1212 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1213 ldlm_gl_callback_server);
1214 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1216 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1217 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1218 ldlm_gl_callback_server);
1219 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1221 struct req_format RQF_LDLM_INTENT_BASIC =
1222 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1223 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1224 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1226 struct req_format RQF_LDLM_INTENT =
1227 DEFINE_REQ_FMT0("LDLM_INTENT",
1228 ldlm_intent_client, ldlm_intent_server);
1229 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1231 struct req_format RQF_LDLM_INTENT_GETATTR =
1232 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1233 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1234 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1236 struct req_format RQF_LDLM_INTENT_OPEN =
1237 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1238 ldlm_intent_open_client, ldlm_intent_open_server);
1239 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1241 struct req_format RQF_LDLM_INTENT_CREATE =
1242 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1243 ldlm_intent_create_client, ldlm_intent_getattr_server);
1244 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1246 struct req_format RQF_LDLM_INTENT_UNLINK =
1247 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1248 ldlm_intent_unlink_client, ldlm_intent_server);
1249 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1251 struct req_format RQF_MDS_CLOSE =
1252 DEFINE_REQ_FMT0("MDS_CLOSE",
1253 mdt_close_client, mds_last_unlink_server);
1254 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1256 struct req_format RQF_MDS_PIN =
1257 DEFINE_REQ_FMT0("MDS_PIN",
1258 mdt_body_capa, mdt_body_only);
1259 EXPORT_SYMBOL(RQF_MDS_PIN);
1261 struct req_format RQF_MDS_UNPIN =
1262 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1263 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1265 struct req_format RQF_MDS_DONE_WRITING =
1266 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1267 mdt_close_client, mdt_body_only);
1268 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1270 struct req_format RQF_MDS_READPAGE =
1271 DEFINE_REQ_FMT0("MDS_READPAGE",
1272 mdt_body_capa, mdt_body_only);
1273 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1275 /* This is for split */
1276 struct req_format RQF_MDS_WRITEPAGE =
1277 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1278 mdt_body_capa, mdt_body_only);
1279 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1281 struct req_format RQF_MDS_IS_SUBDIR =
1282 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1283 mdt_body_only, mdt_body_only);
1284 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1286 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1287 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1288 llog_origin_handle_create_client, llogd_body_only);
1289 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1291 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1292 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1293 llogd_body_only, llogd_body_only);
1294 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1296 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1297 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1298 llogd_body_only, llog_origin_handle_next_block_server);
1299 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1301 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1302 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1303 llogd_body_only, llog_origin_handle_next_block_server);
1304 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1306 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1307 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1308 llogd_body_only, llog_log_hdr_only);
1309 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1311 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1312 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1313 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1315 struct req_format RQF_OST_CONNECT =
1316 DEFINE_REQ_FMT0("OST_CONNECT",
1317 obd_connect_client, obd_connect_server);
1318 EXPORT_SYMBOL(RQF_OST_CONNECT);
1320 struct req_format RQF_OST_DISCONNECT =
1321 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1322 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1324 struct req_format RQF_OST_GETATTR =
1325 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1326 EXPORT_SYMBOL(RQF_OST_GETATTR);
1328 struct req_format RQF_OST_SETATTR =
1329 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1330 EXPORT_SYMBOL(RQF_OST_SETATTR);
1332 struct req_format RQF_OST_CREATE =
1333 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1334 EXPORT_SYMBOL(RQF_OST_CREATE);
1336 struct req_format RQF_OST_PUNCH =
1337 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1338 EXPORT_SYMBOL(RQF_OST_PUNCH);
1340 struct req_format RQF_OST_SYNC =
1341 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1342 EXPORT_SYMBOL(RQF_OST_SYNC);
1344 struct req_format RQF_OST_DESTROY =
1345 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1346 EXPORT_SYMBOL(RQF_OST_DESTROY);
1348 struct req_format RQF_OST_BRW_READ =
1349 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1350 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1352 struct req_format RQF_OST_BRW_WRITE =
1353 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1354 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1356 struct req_format RQF_OST_STATFS =
1357 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1358 EXPORT_SYMBOL(RQF_OST_STATFS);
1360 struct req_format RQF_OST_SET_GRANT_INFO =
1361 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1363 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1365 struct req_format RQF_OST_GET_INFO_GENERIC =
1366 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1367 ost_get_info_generic_server);
1368 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1370 struct req_format RQF_OST_GET_INFO_LAST_ID =
1371 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1372 ost_get_last_id_server);
1373 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1375 struct req_format RQF_OST_GET_INFO_FIEMAP =
1376 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1377 ost_get_fiemap_server);
1378 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1381 #if !defined(__REQ_LAYOUT_USER__)
1383 /* Convenience macro */
1384 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1387 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1388 * field of RQFs and the \a rmf_offset field of RMFs.
1390 int req_layout_init(void)
1395 struct req_format *rf = NULL;
1397 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1398 rf = req_formats[i];
1400 for (j = 0; j < RCL_NR; ++j) {
1401 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1402 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1403 struct req_msg_field *field;
1405 field = (typeof(field))rf->rf_fields[j].d[k];
1406 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1407 || field->rmf_size > 0);
1408 LASSERT(field->rmf_offset[i][j] == 0);
1410 * k + 1 to detect unused format/field
1413 field->rmf_offset[i][j] = k + 1;
1419 EXPORT_SYMBOL(req_layout_init);
1421 void req_layout_fini(void)
1424 EXPORT_SYMBOL(req_layout_fini);
1427 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1429 * Actual/expected field sizes are set elsewhere in functions in this file:
1430 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1431 * req_capsule_msg_size(). The \a rc_area information is used by.
1432 * ptlrpc_request_set_replen().
1434 void req_capsule_init_area(struct req_capsule *pill)
1438 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1439 pill->rc_area[RCL_CLIENT][i] = -1;
1440 pill->rc_area[RCL_SERVER][i] = -1;
1443 EXPORT_SYMBOL(req_capsule_init_area);
1446 * Initialize a pill.
1448 * The \a location indicates whether the caller is executing on the client side
1449 * (RCL_CLIENT) or server side (RCL_SERVER)..
1451 void req_capsule_init(struct req_capsule *pill,
1452 struct ptlrpc_request *req,
1453 enum req_location location)
1455 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1458 * Today all capsules are embedded in ptlrpc_request structs,
1459 * but just in case that ever isn't the case, we don't reach
1460 * into req unless req != NULL and pill is the one embedded in
1463 * The req->rq_pill_init flag makes it safe to initialize a pill
1464 * twice, which might happen in the OST paths as a result of the
1465 * high-priority RPC queue getting peeked at before ost_handle()
1466 * handles an OST RPC.
1468 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1471 memset(pill, 0, sizeof *pill);
1473 pill->rc_loc = location;
1474 req_capsule_init_area(pill);
1476 if (req != NULL && pill == &req->rq_pill)
1477 req->rq_pill_init = 1;
1479 EXPORT_SYMBOL(req_capsule_init);
1481 void req_capsule_fini(struct req_capsule *pill)
1484 EXPORT_SYMBOL(req_capsule_fini);
1486 static int __req_format_is_sane(const struct req_format *fmt)
1489 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1490 req_formats[fmt->rf_idx] == fmt;
1493 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1494 enum req_location loc)
1496 struct ptlrpc_request *req;
1499 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1503 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1504 * (see req_capsule_extend()).
1506 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1508 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1509 LASSERT(__req_format_is_sane(fmt));
1513 EXPORT_SYMBOL(req_capsule_set);
1516 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1519 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1520 * variable-sized fields. The field sizes come from the declared \a rmf_size
1521 * field of a \a pill's \a rc_fmt's RMF's.
1523 int req_capsule_filled_sizes(struct req_capsule *pill,
1524 enum req_location loc)
1526 const struct req_format *fmt = pill->rc_fmt;
1529 LASSERT(fmt != NULL);
1531 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1532 if (pill->rc_area[loc][i] == -1) {
1533 pill->rc_area[loc][i] =
1534 fmt->rf_fields[loc].d[i]->rmf_size;
1535 if (pill->rc_area[loc][i] == -1) {
1537 * Skip the following fields.
1539 * If this LASSERT() trips then you're missing a
1540 * call to req_capsule_set_size().
1542 LASSERT(loc != RCL_SERVER);
1549 EXPORT_SYMBOL(req_capsule_filled_sizes);
1552 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1554 * This function uses the \a pill's \a rc_area as filled in by
1555 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1558 int req_capsule_server_pack(struct req_capsule *pill)
1560 const struct req_format *fmt;
1564 LASSERT(pill->rc_loc == RCL_SERVER);
1566 LASSERT(fmt != NULL);
1568 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1569 rc = lustre_pack_reply(pill->rc_req, count,
1570 pill->rc_area[RCL_SERVER], NULL);
1572 DEBUG_REQ(D_ERROR, pill->rc_req,
1573 "Cannot pack %d fields in format `%s': ",
1574 count, fmt->rf_name);
1578 EXPORT_SYMBOL(req_capsule_server_pack);
1581 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1582 * corresponding to the given RMF (\a field).
1584 static int __req_capsule_offset(const struct req_capsule *pill,
1585 const struct req_msg_field *field,
1586 enum req_location loc)
1590 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1591 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1592 pill->rc_fmt->rf_name,
1593 field->rmf_name, offset, loc);
1596 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1601 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1606 swabber_dumper_helper(struct req_capsule *pill,
1607 const struct req_msg_field *field,
1608 enum req_location loc,
1610 void *value, int len, int dump, void (*swabber)( void *))
1616 int inout = loc == RCL_CLIENT;
1618 swabber = swabber ?: field->rmf_swabber;
1620 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1621 swabber != NULL && value != NULL)
1626 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1627 if (dump && field->rmf_dumper) {
1628 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1629 do_swab ? "unswabbed " : "", field->rmf_name);
1630 field->rmf_dumper(value);
1635 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1637 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1638 "follows\n", field->rmf_name);
1639 field->rmf_dumper(value);
1646 * We're swabbing an array; swabber() swabs a single array element, so
1647 * swab every element.
1649 LASSERT((len % field->rmf_size) == 0);
1650 for (p = value, i = 0, n = len / field->rmf_size;
1652 i++, p += field->rmf_size) {
1653 if (dump && field->rmf_dumper) {
1654 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1655 "element %d follows\n",
1656 do_swab ? "unswabbed " : "", field->rmf_name, i);
1657 field->rmf_dumper(p);
1662 if (dump && field->rmf_dumper) {
1663 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1664 "element %d follows\n", field->rmf_name, i);
1665 field->rmf_dumper(value);
1669 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1673 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1674 * corresponding to the given RMF (\a field).
1676 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1677 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1678 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1679 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1680 * element of the array swabbed.
1682 static void *__req_capsule_get(struct req_capsule *pill,
1683 const struct req_msg_field *field,
1684 enum req_location loc,
1685 void (*swabber)( void *),
1688 const struct req_format *fmt;
1689 struct lustre_msg *msg;
1694 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1696 static const char *rcl_names[RCL_NR] = {
1697 [RCL_CLIENT] = "client",
1698 [RCL_SERVER] = "server"
1701 LASSERT(pill != NULL);
1702 LASSERT(pill != LP_POISON);
1704 LASSERT(fmt != NULL);
1705 LASSERT(fmt != LP_POISON);
1706 LASSERT(__req_format_is_sane(fmt));
1708 offset = __req_capsule_offset(pill, field, loc);
1710 msg = __req_msg(pill, loc);
1711 LASSERT(msg != NULL);
1713 getter = (field->rmf_flags & RMF_F_STRING) ?
1714 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1716 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1718 * We've already asserted that field->rmf_size > 0 in
1719 * req_layout_init().
1721 len = lustre_msg_buflen(msg, offset);
1722 if ((len % field->rmf_size) != 0) {
1723 CERROR("%s: array field size mismatch "
1724 "%d modulo %d != 0 (%d)\n",
1725 field->rmf_name, len, field->rmf_size, loc);
1728 } else if (pill->rc_area[loc][offset] != -1) {
1729 len = pill->rc_area[loc][offset];
1731 len = max(field->rmf_size, 0);
1733 value = getter(msg, offset, len);
1735 if (value == NULL) {
1736 DEBUG_REQ(D_ERROR, pill->rc_req,
1737 "Wrong buffer for field `%s' (%d of %d) "
1738 "in format `%s': %d vs. %d (%s)\n",
1739 field->rmf_name, offset, lustre_msg_bufcount(msg),
1740 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1743 swabber_dumper_helper(pill, field, loc, offset, value, len,
1751 * Dump a request and/or reply
1753 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1755 const struct req_format *fmt;
1756 const struct req_msg_field *field;
1762 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1763 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1764 field = FMT_FIELD(fmt, loc, i);
1765 if (field->rmf_dumper == NULL) {
1767 * FIXME Add a default hex dumper for fields that don't
1768 * have a specific dumper
1770 len = req_capsule_get_size(pill, field, loc);
1771 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1772 "field size is %d\n", field->rmf_name, len);
1774 /* It's the dumping side-effect that we're interested in */
1775 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1778 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1784 void req_capsule_client_dump(struct req_capsule *pill)
1786 __req_capsule_dump(pill, RCL_CLIENT);
1788 EXPORT_SYMBOL(req_capsule_client_dump);
1793 void req_capsule_server_dump(struct req_capsule *pill)
1795 __req_capsule_dump(pill, RCL_SERVER);
1797 EXPORT_SYMBOL(req_capsule_server_dump);
1800 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1801 * buffer corresponding to the given RMF (\a field) of a \a pill.
1803 void *req_capsule_client_get(struct req_capsule *pill,
1804 const struct req_msg_field *field)
1806 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1808 EXPORT_SYMBOL(req_capsule_client_get);
1811 * Same as req_capsule_client_get(), but with a \a swabber argument.
1813 * Currently unused; will be removed when req_capsule_server_swab_get() is
1816 void *req_capsule_client_swab_get(struct req_capsule *pill,
1817 const struct req_msg_field *field,
1820 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1822 EXPORT_SYMBOL(req_capsule_client_swab_get);
1825 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1827 * First the \a pill's request \a field's size is set (\a rc_area) using
1828 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1831 void *req_capsule_client_sized_get(struct req_capsule *pill,
1832 const struct req_msg_field *field,
1835 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1836 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1838 EXPORT_SYMBOL(req_capsule_client_sized_get);
1841 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1842 * buffer corresponding to the given RMF (\a field) of a \a pill.
1844 void *req_capsule_server_get(struct req_capsule *pill,
1845 const struct req_msg_field *field)
1847 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1849 EXPORT_SYMBOL(req_capsule_server_get);
1852 * Same as req_capsule_server_get(), but with a \a swabber argument.
1854 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1855 * swabbing done outside this capsule abstraction.
1857 void *req_capsule_server_swab_get(struct req_capsule *pill,
1858 const struct req_msg_field *field,
1861 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1863 EXPORT_SYMBOL(req_capsule_server_swab_get);
1866 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1868 * First the \a pill's request \a field's size is set (\a rc_area) using
1869 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1872 void *req_capsule_server_sized_get(struct req_capsule *pill,
1873 const struct req_msg_field *field,
1876 req_capsule_set_size(pill, field, RCL_SERVER, len);
1877 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1879 EXPORT_SYMBOL(req_capsule_server_sized_get);
1881 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
1882 const struct req_msg_field *field,
1883 int len, void *swabber)
1885 req_capsule_set_size(pill, field, RCL_SERVER, len);
1886 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1888 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
1891 * Returns the buffer of a \a pill corresponding to the given \a field from the
1892 * request (if the caller is executing on the server-side) or reply (if the
1893 * caller is executing on the client-side).
1895 * This function convienient for use is code that could be executed on the
1896 * client and server alike.
1898 const void *req_capsule_other_get(struct req_capsule *pill,
1899 const struct req_msg_field *field)
1901 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
1903 EXPORT_SYMBOL(req_capsule_other_get);
1906 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
1907 * field of the given \a pill.
1909 * This function must be used when constructing variable sized fields of a
1912 void req_capsule_set_size(struct req_capsule *pill,
1913 const struct req_msg_field *field,
1914 enum req_location loc, int size)
1916 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1918 if ((size != field->rmf_size) &&
1919 (field->rmf_size != -1) &&
1920 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1922 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1923 (size % field->rmf_size != 0)) {
1924 CERROR("%s: array field size mismatch "
1925 "%d %% %d != 0 (%d)\n",
1926 field->rmf_name, size, field->rmf_size, loc);
1928 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1929 size < field->rmf_size) {
1930 CERROR("%s: field size mismatch %d != %d (%d)\n",
1931 field->rmf_name, size, field->rmf_size, loc);
1936 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1938 EXPORT_SYMBOL(req_capsule_set_size);
1941 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
1942 * for the given \a pill's given \a field.
1944 * NB: this function doesn't correspond with req_capsule_set_size(), which
1945 * actually sets the size in pill.rc_area[loc][offset], but this function
1946 * returns the message buflen[offset], maybe we should use another name.
1948 int req_capsule_get_size(const struct req_capsule *pill,
1949 const struct req_msg_field *field,
1950 enum req_location loc)
1952 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1954 return lustre_msg_buflen(__req_msg(pill, loc),
1955 __req_capsule_offset(pill, field, loc));
1957 EXPORT_SYMBOL(req_capsule_get_size);
1960 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
1961 * given \a pill's request or reply (\a loc) given the field size recorded in
1962 * the \a pill's rc_area.
1964 * See also req_capsule_set_size().
1966 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1968 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1969 pill->rc_fmt->rf_fields[loc].nr,
1970 pill->rc_area[loc]);
1974 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
1975 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
1976 * PTLRPC request or reply given only an RQF (\a fmt).
1978 * This function should not be used for formats which contain variable size
1981 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1982 enum req_location loc)
1987 * This function should probably LASSERT() that fmt has no fields with
1988 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
1989 * elements in the array there will ultimately be, but then, we could
1990 * assume that there will be at least one element, and that's just what
1993 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1997 for (; i < fmt->rf_fields[loc].nr; ++i)
1998 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1999 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2005 * Changes the format of an RPC.
2007 * The pill must already have been initialized, which means that it already has
2008 * a request format. The new format \a fmt must be an extension of the pill's
2009 * old format. Specifically: the new format must have as many request and reply
2010 * fields as the old one, and all fields shared by the old and new format must
2011 * be at least as large in the new format.
2013 * The new format's fields may be of different "type" than the old format, but
2014 * only for fields that are "opaque" blobs: fields which have a) have no
2015 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2016 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2017 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2018 * according to the key field. When the value, according to the key, contains a
2019 * structure (or array thereof) to be swabbed, the format should be changed to
2020 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2023 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2028 const struct req_format *old;
2030 LASSERT(pill->rc_fmt != NULL);
2031 LASSERT(__req_format_is_sane(fmt));
2035 * Sanity checking...
2037 for (i = 0; i < RCL_NR; ++i) {
2038 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2039 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2040 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2042 /* "opaque" fields can be transmogrified */
2043 if (ofield->rmf_swabber == NULL &&
2044 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2045 (ofield->rmf_size == -1 ||
2046 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2048 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2051 * Last field in old format can be shorter than in new.
2053 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2054 FMT_FIELD(old, i, j)->rmf_size);
2059 EXPORT_SYMBOL(req_capsule_extend);
2062 * This function returns a non-zero value if the given \a field is present in
2063 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2066 int req_capsule_has_field(const struct req_capsule *pill,
2067 const struct req_msg_field *field,
2068 enum req_location loc)
2070 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2072 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2074 EXPORT_SYMBOL(req_capsule_has_field);
2077 * Returns a non-zero value if the given \a field is present in the given \a
2078 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2080 int req_capsule_field_present(const struct req_capsule *pill,
2081 const struct req_msg_field *field,
2082 enum req_location loc)
2086 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2087 LASSERT(req_capsule_has_field(pill, field, loc));
2089 offset = __req_capsule_offset(pill, field, loc);
2090 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2092 EXPORT_SYMBOL(req_capsule_field_present);
2095 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2096 * request or reply (\a loc).
2098 * This is not the opposite of req_capsule_extend().
2100 void req_capsule_shrink(struct req_capsule *pill,
2101 const struct req_msg_field *field,
2102 unsigned int newlen,
2103 enum req_location loc)
2105 const struct req_format *fmt;
2106 struct lustre_msg *msg;
2111 LASSERT(fmt != NULL);
2112 LASSERT(__req_format_is_sane(fmt));
2113 LASSERT(req_capsule_has_field(pill, field, loc));
2114 LASSERT(req_capsule_field_present(pill, field, loc));
2116 offset = __req_capsule_offset(pill, field, loc);
2118 msg = __req_msg(pill, loc);
2119 len = lustre_msg_buflen(msg, offset);
2120 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2121 fmt->rf_name, field->rmf_name, len, newlen);
2123 if (loc == RCL_CLIENT)
2124 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2127 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2130 EXPORT_SYMBOL(req_capsule_shrink);
2132 int req_capsule_server_grow(struct req_capsule *pill,
2133 const struct req_msg_field *field,
2134 unsigned int newlen)
2136 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2138 int offset, len, rc;
2140 LASSERT(pill->rc_fmt != NULL);
2141 LASSERT(__req_format_is_sane(pill->rc_fmt));
2142 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2143 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2145 len = req_capsule_get_size(pill, field, RCL_SERVER);
2146 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2147 if (pill->rc_req->rq_repbuf_len >=
2148 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2149 CERROR("Inplace repack might be done\n");
2151 pill->rc_req->rq_reply_state = NULL;
2152 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2153 rc = req_capsule_server_pack(pill);
2155 /* put old rs back, the caller will decide what to do */
2156 pill->rc_req->rq_reply_state = rs;
2159 nrs = pill->rc_req->rq_reply_state;
2160 /* Now we need only buffers, copy first chunk */
2161 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2162 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2163 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2164 memcpy(to, from, len);
2165 /* check if we have tail and copy it too */
2166 if (rs->rs_msg->lm_bufcount > offset + 1) {
2167 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2168 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2169 offset = rs->rs_msg->lm_bufcount - 1;
2170 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2171 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2172 memcpy(to, from, len);
2174 /* drop old reply if everything is fine */
2175 if (rs->rs_difficult) {
2179 nrs->rs_difficult = 1;
2180 nrs->rs_no_ack = rs->rs_no_ack;
2181 for (i = 0; i < rs->rs_nlocks; i++) {
2182 nrs->rs_locks[i] = rs->rs_locks[i];
2183 nrs->rs_modes[i] = rs->rs_modes[i];
2187 rs->rs_difficult = 0;
2190 ptlrpc_rs_decref(rs);
2193 EXPORT_SYMBOL(req_capsule_server_grow);
2194 /* __REQ_LAYOUT_USER__ */