-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_FID
#ifdef __KERNEL__
#include "fid_internal.h"
#ifdef __KERNEL__
-enum {
- SEQ_TXN_STORE_CREDITS = 20
-};
static struct lu_buf *seq_store_buf(struct seq_thread_info *info)
{
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);
+}
+
+struct thandle *seq_store_trans_create(struct lu_server_seq *seq,
+ const struct lu_env *env)
+{
+ struct dt_device *dt_dev;
+
+ dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
+ return dt_trans_create(env, dt_dev);
+}
+
+int seq_store_trans_start(struct lu_server_seq *seq, const struct lu_env *env,
+ struct thandle *th)
+{
+ struct dt_device *dt_dev;
+ ENTRY;
+
+ dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
+
+ return dt_trans_start(env, dt_dev, th);
+}
+
+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;
+ CFS_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;
+}
+
+int seq_declare_store_write(struct lu_server_seq *seq,
+ const struct lu_env *env,
+ struct thandle *th)
+{
+ struct dt_object *dt_obj = seq->lss_obj;
+ int rc;
+ ENTRY;
+
+ rc = dt_obj->do_body_ops->dbo_declare_write(env, dt_obj,
+ sizeof(struct lu_seq_range),
+ 0, th);
+ return rc;
+}
+
/* This function implies that caller takes care about locking. */
int seq_store_write(struct lu_server_seq *seq,
- const struct lu_env *env)
+ const struct lu_env *env,
+ struct thandle *th)
{
struct dt_object *dt_obj = seq->lss_obj;
struct seq_thread_info *info;
- struct dt_device *dt_dev;
- struct thandle *th;
loff_t pos = 0;
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
- dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
LASSERT(info != NULL);
- /* Stub here, will fix it later. */
- txn_param_init(&info->sti_txn, SEQ_TXN_STORE_CREDITS);
-
- th = dt_dev->dd_ops->dt_trans_start(env, dt_dev, &info->sti_txn);
- if (!IS_ERR(th)) {
- /* Store ranges in le format. */
- range_cpu_to_le(&info->sti_space, &seq->lss_space);
-
- rc = dt_obj->do_body_ops->dbo_write(env, dt_obj,
- seq_store_buf(info),
- &pos, th, BYPASS_CAPA, 1);
- if (rc == sizeof(info->sti_space)) {
- CDEBUG(D_INFO, "%s: Space - "DRANGE"\n",
- seq->lss_name, PRANGE(&seq->lss_space));
- rc = 0;
- } else if (rc >= 0) {
- rc = -EIO;
- }
+ /* Store ranges in le format. */
+ range_cpu_to_le(&info->sti_space, &seq->lss_space);
- dt_dev->dd_ops->dt_trans_stop(env, th);
- } else {
- rc = PTR_ERR(th);
+ rc = dt_obj->do_body_ops->dbo_write(env, dt_obj,
+ seq_store_buf(info),
+ &pos, th, BYPASS_CAPA, 1);
+ if (rc == sizeof(info->sti_space)) {
+ CDEBUG(D_INFO, "%s: Space - "DRANGE"\n",
+ seq->lss_name, PRANGE(&seq->lss_space));
+ rc = 0;
+ } else if (rc >= 0) {
+ rc = -EIO;
}
-
- RETURN(rc);
+
+
+ RETURN(rc);
+}
+
+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;
+ struct thandle *th;
+ int rc;
+ ENTRY;
+
+ dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
+
+ th = seq_store_trans_create(seq, env);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ rc = seq_declare_store_write(seq, env, th);
+ if (rc)
+ GOTO(exit, rc);
+
+ if (out != NULL) {
+ rc = fld_declare_server_create(seq->lss_site->ms_server_fld,
+ env, th);
+ if (rc)
+ GOTO(exit, rc);
+ }
+
+ rc = seq_store_trans_start(seq, env, th);
+ if (rc)
+ GOTO(exit, rc);
+
+ rc = seq_store_write(seq, env, 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(seq->lss_site->ms_server_fld,
+ env, 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;
}
/*
struct dt_object *dt_obj = seq->lss_obj;
struct seq_thread_info *info;
loff_t pos = 0;
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
LASSERT(info != NULL);
rc = -EIO;
}
- RETURN(rc);
+ RETURN(rc);
}
int seq_store_init(struct lu_server_seq *seq,
struct dt_device *dt)
{
struct dt_object *dt_obj;
- struct lu_fid fid;
+ 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;
+ 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);
- dt_obj = dt_store_open(env, dt, name, &fid);
+ 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;
+ rc = 0;
} else {
CERROR("%s: Can't find \"%s\" obj %d\n",
- seq->lss_name, name, (int)PTR_ERR(dt_obj));
+ seq->lss_name, name, (int)PTR_ERR(dt_obj));
rc = PTR_ERR(dt_obj);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff