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Diffstat (limited to 'drivers/staging/lustre/lustre/fid/fid_store.c')
-rw-r--r--drivers/staging/lustre/lustre/fid/fid_store.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/drivers/staging/lustre/lustre/fid/fid_store.c b/drivers/staging/lustre/lustre/fid/fid_store.c
deleted file mode 100644
index a90e6e37d689..000000000000
--- a/drivers/staging/lustre/lustre/fid/fid_store.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- * 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.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2013, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/fid/fid_store.c
- *
- * Lustre Sequence Manager
- *
- * Author: Yury Umanets <umka@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_FID
-
-# include <linux/libcfs/libcfs.h>
-# include <linux/module.h>
-
-#include <obd.h>
-#include <obd_class.h>
-#include <dt_object.h>
-#include <md_object.h>
-#include <obd_support.h>
-#include <lustre_req_layout.h>
-#include <lustre_fid.h>
-#include "fid_internal.h"
-
-
-static struct lu_buf *seq_store_buf(struct seq_thread_info *info)
-{
- struct lu_buf *buf;
-
- buf = &info->sti_buf;
- buf->lb_buf = &info->sti_space;
- buf->lb_len = sizeof(info->sti_space);
- return buf;
-}
-
-struct seq_update_callback {
- struct dt_txn_commit_cb suc_cb;
- struct lu_server_seq *suc_seq;
-};
-
-void seq_update_cb(struct lu_env *env, struct thandle *th,
- struct dt_txn_commit_cb *cb, int err)
-{
- struct seq_update_callback *ccb;
-
- ccb = container_of0(cb, struct seq_update_callback, suc_cb);
-
- LASSERT(ccb->suc_seq != NULL);
-
- ccb->suc_seq->lss_need_sync = 0;
- OBD_FREE_PTR(ccb);
-}
-
-int seq_update_cb_add(struct thandle *th, struct lu_server_seq *seq)
-{
- struct seq_update_callback *ccb;
- struct dt_txn_commit_cb *dcb;
- int rc;
-
- OBD_ALLOC_PTR(ccb);
- if (ccb == NULL)
- return -ENOMEM;
-
- ccb->suc_seq = seq;
- seq->lss_need_sync = 1;
-
- dcb = &ccb->suc_cb;
- dcb->dcb_func = seq_update_cb;
- INIT_LIST_HEAD(&dcb->dcb_linkage);
- strncpy(dcb->dcb_name, "seq_update_cb", MAX_COMMIT_CB_STR_LEN);
- dcb->dcb_name[MAX_COMMIT_CB_STR_LEN - 1] = '\0';
-
- rc = dt_trans_cb_add(th, dcb);
- if (rc)
- OBD_FREE_PTR(ccb);
- return rc;
-}
-
-/* This function implies that caller takes care about locking. */
-int seq_store_update(const struct lu_env *env, struct lu_server_seq *seq,
- struct lu_seq_range *out, int sync)
-{
- struct dt_device *dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
- struct seq_thread_info *info;
- struct thandle *th;
- loff_t pos = 0;
- int rc;
-
- info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
- LASSERT(info != NULL);
-
- th = dt_trans_create(env, dt_dev);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- rc = dt_declare_record_write(env, seq->lss_obj,
- sizeof(struct lu_seq_range), 0, th);
- if (rc)
- GOTO(exit, rc);
-
- if (out != NULL) {
- rc = fld_declare_server_create(env,
- seq->lss_site->ss_server_fld,
- out, th);
- if (rc)
- GOTO(exit, rc);
- }
-
- rc = dt_trans_start_local(env, dt_dev, th);
- if (rc)
- GOTO(exit, rc);
-
- /* Store ranges in le format. */
- range_cpu_to_le(&info->sti_space, &seq->lss_space);
-
- rc = dt_record_write(env, seq->lss_obj, seq_store_buf(info), &pos, th);
- if (rc) {
- CERROR("%s: Can't write space data, rc %d\n",
- seq->lss_name, rc);
- GOTO(exit, rc);
- } else if (out != NULL) {
- rc = fld_server_create(env, seq->lss_site->ss_server_fld, out,
- th);
- if (rc) {
- CERROR("%s: Can't Update fld database, rc %d\n",
- seq->lss_name, rc);
- GOTO(exit, rc);
- }
- }
- /* next sequence update will need sync until this update is committed
- * in case of sync operation this is not needed obviously */
- if (!sync)
- /* if callback can't be added then sync always */
- sync = !!seq_update_cb_add(th, seq);
-
- th->th_sync |= sync;
-exit:
- dt_trans_stop(env, dt_dev, th);
- return rc;
-}
-
-/*
- * This function implies that caller takes care about locking or locking is not
- * needed (init time).
- */
-int seq_store_read(struct lu_server_seq *seq,
- const struct lu_env *env)
-{
- struct seq_thread_info *info;
- loff_t pos = 0;
- int rc;
- ENTRY;
-
- info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
- LASSERT(info != NULL);
-
- rc = seq->lss_obj->do_body_ops->dbo_read(env, seq->lss_obj,
- seq_store_buf(info),
- &pos, BYPASS_CAPA);
-
- if (rc == sizeof(info->sti_space)) {
- range_le_to_cpu(&seq->lss_space, &info->sti_space);
- CDEBUG(D_INFO, "%s: Space - "DRANGE"\n",
- seq->lss_name, PRANGE(&seq->lss_space));
- rc = 0;
- } else if (rc == 0) {
- rc = -ENODATA;
- } else if (rc > 0) {
- CERROR("%s: Read only %d bytes of %d\n", seq->lss_name,
- rc, (int)sizeof(info->sti_space));
- rc = -EIO;
- }
-
- RETURN(rc);
-}
-
-int seq_store_init(struct lu_server_seq *seq,
- const struct lu_env *env,
- struct dt_device *dt)
-{
- struct dt_object *dt_obj;
- struct lu_fid fid;
- struct lu_attr attr;
- struct dt_object_format dof;
- const char *name;
- int rc;
- ENTRY;
-
- name = seq->lss_type == LUSTRE_SEQ_SERVER ?
- LUSTRE_SEQ_SRV_NAME : LUSTRE_SEQ_CTL_NAME;
-
- if (seq->lss_type == LUSTRE_SEQ_SERVER)
- lu_local_obj_fid(&fid, FID_SEQ_SRV_OID);
- else
- lu_local_obj_fid(&fid, FID_SEQ_CTL_OID);
-
- memset(&attr, 0, sizeof(attr));
- attr.la_valid = LA_MODE;
- attr.la_mode = S_IFREG | 0666;
- dof.dof_type = DFT_REGULAR;
-
- dt_obj = dt_find_or_create(env, dt, &fid, &dof, &attr);
- if (!IS_ERR(dt_obj)) {
- seq->lss_obj = dt_obj;
- rc = 0;
- } else {
- CERROR("%s: Can't find \"%s\" obj %d\n",
- seq->lss_name, name, (int)PTR_ERR(dt_obj));
- rc = PTR_ERR(dt_obj);
- }
-
- RETURN(rc);
-}
-
-void seq_store_fini(struct lu_server_seq *seq,
- const struct lu_env *env)
-{
- ENTRY;
-
- if (seq->lss_obj != NULL) {
- if (!IS_ERR(seq->lss_obj))
- lu_object_put(env, &seq->lss_obj->do_lu);
- seq->lss_obj = NULL;
- }
-
- EXIT;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.