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-rw-r--r--drivers/staging/lustre/lustre/fid/fid_request.c410
1 files changed, 0 insertions, 410 deletions
diff --git a/drivers/staging/lustre/lustre/fid/fid_request.c b/drivers/staging/lustre/lustre/fid/fid_request.c
deleted file mode 100644
index a34fd90ca5e5..000000000000
--- a/drivers/staging/lustre/lustre/fid/fid_request.c
+++ /dev/null
@@ -1,410 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2015, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/fid/fid_request.c
- *
- * Lustre Sequence Manager
- *
- * Author: Yury Umanets <umka@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_FID
-
-#include <linux/module.h>
-
-#include <obd.h>
-#include <obd_class.h>
-#include <obd_support.h>
-#include <lustre_fid.h>
-/* mdc RPC locks */
-#include <lustre_mdc.h>
-#include "fid_internal.h"
-
-static struct dentry *seq_debugfs_dir;
-
-static int seq_client_rpc(struct lu_client_seq *seq,
- struct lu_seq_range *output, __u32 opc,
- const char *opcname)
-{
- struct obd_export *exp = seq->lcs_exp;
- struct ptlrpc_request *req;
- struct lu_seq_range *out, *in;
- __u32 *op;
- unsigned int debug_mask;
- int rc;
-
- LASSERT(exp && !IS_ERR(exp));
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY,
- LUSTRE_MDS_VERSION, SEQ_QUERY);
- if (!req)
- return -ENOMEM;
-
- /* Init operation code */
- op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC);
- *op = opc;
-
- /* Zero out input range, this is not recovery yet. */
- in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE);
- lu_seq_range_init(in);
-
- ptlrpc_request_set_replen(req);
-
- in->lsr_index = seq->lcs_space.lsr_index;
- if (seq->lcs_type == LUSTRE_SEQ_METADATA)
- fld_range_set_mdt(in);
- else
- fld_range_set_ost(in);
-
- if (opc == SEQ_ALLOC_SUPER) {
- req->rq_request_portal = SEQ_CONTROLLER_PORTAL;
- req->rq_reply_portal = MDC_REPLY_PORTAL;
- /* During allocating super sequence for data object,
- * the current thread might hold the export of MDT0(MDT0
- * precreating objects on this OST), and it will send the
- * request to MDT0 here, so we can not keep resending the
- * request here, otherwise if MDT0 is failed(umounted),
- * it can not release the export of MDT0
- */
- if (seq->lcs_type == LUSTRE_SEQ_DATA) {
- req->rq_no_delay = 1;
- req->rq_no_resend = 1;
- }
- debug_mask = D_CONSOLE;
- } else {
- if (seq->lcs_type == LUSTRE_SEQ_METADATA) {
- req->rq_reply_portal = MDC_REPLY_PORTAL;
- req->rq_request_portal = SEQ_METADATA_PORTAL;
- } else {
- req->rq_reply_portal = OSC_REPLY_PORTAL;
- req->rq_request_portal = SEQ_DATA_PORTAL;
- }
- debug_mask = D_INFO;
- }
-
- ptlrpc_at_set_req_timeout(req);
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- goto out_req;
-
- out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE);
-
- if (!lu_seq_range_is_sane(out)) {
- CERROR("%s: Invalid range received from server: "
- DRANGE "\n", seq->lcs_name, PRANGE(out));
- rc = -EINVAL;
- goto out_req;
- }
-
- if (lu_seq_range_is_exhausted(out)) {
- CERROR("%s: Range received from server is exhausted: "
- DRANGE "]\n", seq->lcs_name, PRANGE(out));
- rc = -EINVAL;
- goto out_req;
- }
-
- *output = *out;
- CDEBUG_LIMIT(debug_mask, "%s: Allocated %s-sequence " DRANGE "]\n",
- seq->lcs_name, opcname, PRANGE(output));
-
-out_req:
- ptlrpc_req_finished(req);
- return rc;
-}
-
-/* Request sequence-controller node to allocate new meta-sequence. */
-static int seq_client_alloc_meta(const struct lu_env *env,
- struct lu_client_seq *seq)
-{
- int rc;
-
- do {
- /* If meta server return -EINPROGRESS or EAGAIN,
- * it means meta server might not be ready to
- * allocate super sequence from sequence controller
- * (MDT0)yet
- */
- rc = seq_client_rpc(seq, &seq->lcs_space,
- SEQ_ALLOC_META, "meta");
- } while (rc == -EINPROGRESS || rc == -EAGAIN);
-
- return rc;
-}
-
-/* Allocate new sequence for client. */
-static int seq_client_alloc_seq(const struct lu_env *env,
- struct lu_client_seq *seq, u64 *seqnr)
-{
- int rc;
-
- LASSERT(lu_seq_range_is_sane(&seq->lcs_space));
-
- if (lu_seq_range_is_exhausted(&seq->lcs_space)) {
- rc = seq_client_alloc_meta(env, seq);
- if (rc) {
- CERROR("%s: Can't allocate new meta-sequence, rc %d\n",
- seq->lcs_name, rc);
- *seqnr = U64_MAX;
- return rc;
- }
- CDEBUG(D_INFO, "%s: New range - " DRANGE "\n",
- seq->lcs_name, PRANGE(&seq->lcs_space));
- } else {
- rc = 0;
- }
-
- LASSERT(!lu_seq_range_is_exhausted(&seq->lcs_space));
- *seqnr = seq->lcs_space.lsr_start;
- seq->lcs_space.lsr_start += 1;
-
- CDEBUG(D_INFO, "%s: Allocated sequence [%#llx]\n", seq->lcs_name,
- *seqnr);
-
- return rc;
-}
-
-/* Allocate new fid on passed client @seq and save it to @fid. */
-int seq_client_alloc_fid(const struct lu_env *env,
- struct lu_client_seq *seq, struct lu_fid *fid)
-{
- int rc;
-
- LASSERT(seq);
- LASSERT(fid);
-
- spin_lock(&seq->lcs_lock);
-
- if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_EXHAUST))
- seq->lcs_fid.f_oid = seq->lcs_width;
-
- wait_event_cmd(seq->lcs_waitq,
- (!fid_is_zero(&seq->lcs_fid) &&
- fid_oid(&seq->lcs_fid) < seq->lcs_width) ||
- !seq->lcs_update,
- spin_unlock(&seq->lcs_lock),
- spin_lock(&seq->lcs_lock));
-
- if (!fid_is_zero(&seq->lcs_fid) &&
- fid_oid(&seq->lcs_fid) < seq->lcs_width) {
- /* Just bump last allocated fid and return to caller. */
- seq->lcs_fid.f_oid += 1;
- rc = 0;
- } else {
- u64 seqnr;
-
- LASSERT(seq->lcs_update == 0);
- seq->lcs_update = 1;
- spin_unlock(&seq->lcs_lock);
-
- rc = seq_client_alloc_seq(env, seq, &seqnr);
-
- spin_lock(&seq->lcs_lock);
- seq->lcs_update = 0;
- wake_up(&seq->lcs_waitq);
-
- if (rc) {
- CERROR("%s: Can't allocate new sequence, rc %d\n",
- seq->lcs_name, rc);
- spin_unlock(&seq->lcs_lock);
- return rc;
- }
-
- CDEBUG(D_INFO, "%s: Switch to sequence [0x%16.16llx]\n",
- seq->lcs_name, seqnr);
-
- seq->lcs_fid.f_oid = LUSTRE_FID_INIT_OID;
- seq->lcs_fid.f_seq = seqnr;
- seq->lcs_fid.f_ver = 0;
-
- /*
- * Inform caller that sequence switch is performed to allow it
- * to setup FLD for it.
- */
- rc = 1;
- }
-
- *fid = seq->lcs_fid;
- spin_unlock(&seq->lcs_lock);
-
- CDEBUG(D_INFO,
- "%s: Allocated FID " DFID "\n", seq->lcs_name, PFID(fid));
- return rc;
-}
-EXPORT_SYMBOL(seq_client_alloc_fid);
-
-/*
- * Finish the current sequence due to disconnect.
- * See mdc_import_event()
- */
-void seq_client_flush(struct lu_client_seq *seq)
-{
-
- LASSERT(seq);
- spin_lock(&seq->lcs_lock);
-
- wait_event_cmd(seq->lcs_waitq,
- !seq->lcs_update,
- spin_unlock(&seq->lcs_lock),
- spin_lock(&seq->lcs_lock));
-
- fid_zero(&seq->lcs_fid);
- /**
- * this id shld not be used for seq range allocation.
- * set to -1 for dgb check.
- */
-
- seq->lcs_space.lsr_index = -1;
-
- lu_seq_range_init(&seq->lcs_space);
- spin_unlock(&seq->lcs_lock);
-}
-EXPORT_SYMBOL(seq_client_flush);
-
-static void seq_client_debugfs_fini(struct lu_client_seq *seq)
-{
- debugfs_remove_recursive(seq->lcs_debugfs_entry);
-}
-
-static void seq_client_debugfs_init(struct lu_client_seq *seq)
-{
- seq->lcs_debugfs_entry = debugfs_create_dir(seq->lcs_name,
- seq_debugfs_dir);
-
- ldebugfs_add_vars(seq->lcs_debugfs_entry, seq_client_debugfs_list, seq);
-}
-
-static void seq_client_fini(struct lu_client_seq *seq)
-{
- seq_client_debugfs_fini(seq);
-
- if (seq->lcs_exp) {
- class_export_put(seq->lcs_exp);
- seq->lcs_exp = NULL;
- }
-}
-
-static void seq_client_init(struct lu_client_seq *seq, struct obd_export *exp,
- enum lu_cli_type type, const char *prefix)
-{
- LASSERT(seq);
- LASSERT(prefix);
-
- seq->lcs_type = type;
-
- spin_lock_init(&seq->lcs_lock);
- if (type == LUSTRE_SEQ_METADATA)
- seq->lcs_width = LUSTRE_METADATA_SEQ_MAX_WIDTH;
- else
- seq->lcs_width = LUSTRE_DATA_SEQ_MAX_WIDTH;
-
- init_waitqueue_head(&seq->lcs_waitq);
- /* Make sure that things are clear before work is started. */
- seq_client_flush(seq);
-
- seq->lcs_exp = class_export_get(exp);
-
- snprintf(seq->lcs_name, sizeof(seq->lcs_name),
- "cli-%s", prefix);
-
- seq_client_debugfs_init(seq);
-}
-
-int client_fid_init(struct obd_device *obd,
- struct obd_export *exp, enum lu_cli_type type)
-{
- struct client_obd *cli = &obd->u.cli;
- char *prefix;
- int rc;
-
- cli->cl_seq = kzalloc(sizeof(*cli->cl_seq), GFP_NOFS);
- if (!cli->cl_seq)
- return -ENOMEM;
-
- prefix = kzalloc(MAX_OBD_NAME + 5, GFP_NOFS);
- if (!prefix) {
- rc = -ENOMEM;
- goto out_free_seq;
- }
-
- snprintf(prefix, MAX_OBD_NAME + 5, "cli-%s", obd->obd_name);
-
- /* Init client side sequence-manager */
- seq_client_init(cli->cl_seq, exp, type, prefix);
- kfree(prefix);
-
- return 0;
-out_free_seq:
- kfree(cli->cl_seq);
- cli->cl_seq = NULL;
- return rc;
-}
-EXPORT_SYMBOL(client_fid_init);
-
-int client_fid_fini(struct obd_device *obd)
-{
- struct client_obd *cli = &obd->u.cli;
-
- if (cli->cl_seq) {
- seq_client_fini(cli->cl_seq);
- kfree(cli->cl_seq);
- cli->cl_seq = NULL;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(client_fid_fini);
-
-static int __init fid_init(void)
-{
- int rc;
-
- rc = libcfs_setup();
- if (rc)
- return rc;
-
- seq_debugfs_dir = debugfs_create_dir(LUSTRE_SEQ_NAME,
- debugfs_lustre_root);
- return 0;
-}
-
-static void __exit fid_exit(void)
-{
- debugfs_remove_recursive(seq_debugfs_dir);
-}
-
-MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre File IDentifier");
-MODULE_VERSION(LUSTRE_VERSION_STRING);
-MODULE_LICENSE("GPL");
-
-module_init(fid_init);
-module_exit(fid_exit);
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