-/* -*- 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__
return buf;
}
-struct thandle *seq_store_trans_start(struct lu_server_seq *seq,
- const struct lu_env *env, int credit,
- int sync)
+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_thread_info *info;
- struct dt_device *dt_dev;
- struct thandle *th;
- ENTRY;
+ struct seq_update_callback *ccb;
- 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);
+ ccb = container_of0(cb, struct seq_update_callback, suc_cb);
+
+ LASSERT(ccb->suc_seq != NULL);
- txn_param_init(&info->sti_txn, credit);
- if (sync)
- txn_param_sync(&info->sti_txn);
+ 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;
- th = dt_dev->dd_ops->dt_trans_start(env, dt_dev, &info->sti_txn);
- return th;
+ dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
+ return dt_trans_create(env, dt_dev);
}
-void seq_store_trans_stop(struct lu_server_seq *seq,
- const struct lu_env *env,
+int seq_store_trans_start(struct lu_server_seq *seq, const struct lu_env *env,
struct thandle *th)
{
struct dt_device *dt_dev;
dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
- dt_dev->dd_ops->dt_trans_stop(env, th);
+ 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. */
{
struct dt_object *dt_obj = seq->lss_obj;
struct seq_thread_info *info;
- struct dt_device *dt_dev;
loff_t pos = 0;
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);
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;
- int credits = SEQ_TXN_STORE_CREDITS;
+ ENTRY;
- if (out != NULL)
- credits += FLD_TXN_INDEX_INSERT_CREDITS;
+ dt_dev = lu2dt_dev(seq->lss_obj->do_lu.lo_dev);
- th = seq_store_trans_start(seq, env, credits, sync);
+ 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);
}
}
- seq_store_trans_stop(seq, env, th);
+ /* 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_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);
+
+ memset(&attr, 0, sizeof(attr));
+ attr.la_valid = LA_MODE;
+ attr.la_mode = S_IFREG | 0666;
+ dof.dof_type = DFT_REGULAR;
- dt_obj = dt_store_open(env, dt, "", name, &fid);
+ dt_obj = dt_find_or_create(env, dt, &fid, &dof, &attr);
if (!IS_ERR(dt_obj)) {
seq->lss_obj = dt_obj;
rc = 0;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff