-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * lustre/cmm/cmm_internal.h
- * Lustre Cluster Metadata Manager (cmm),
- * MDC device
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
- * Author: Mike Pershin <tappro@clusterfs.com>
+ * 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 file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * 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 may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * 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
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * 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.
*
- * In either case, Lustre 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
- * license text for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/cmm/mdc_internal.h
+ *
+ * Lustre Cluster Metadata Manager (cmm), MDC device
+ *
+ * Author: Mike Pershin <tappro@clusterfs.com>
*/
#ifndef _CMM_MDC_INTERNAL_H
#include <lustre_net.h>
#include <obd.h>
#include <md_object.h>
-
+/**
+ * \addtogroup cmm
+ * @{
+ */
+/**
+ * \defgroup cmm_mdc cmm_mdc
+ *
+ * This is mdc wrapper device to work with old MDC obd-based devices.
+ * @{
+ */
+/**
+ * MDC client description.
+ */
struct mdc_cli_desc {
- struct lustre_handle cl_conn;
- /* uuid of remote MDT to connect */
+ /** uuid of remote MDT to connect */
struct obd_uuid cl_srv_uuid;
- /* mdc uuid */
+ /** mdc uuid */
struct obd_uuid cl_cli_uuid;
- /* export of mdc obd */
+ /** export of mdc obd */
struct obd_export *cl_exp;
};
+/**
+ * MDC device.
+ */
struct mdc_device {
+ /** md_device instance for MDC */
struct md_device mc_md_dev;
- /* other MD servers in cluster */
- struct list_head mc_linkage;
+ /** other MD servers in cluster */
+ cfs_list_t mc_linkage;
+ /** number of current device */
mdsno_t mc_num;
+ /** mdc client description */
struct mdc_cli_desc mc_desc;
- struct semaphore mc_fid_sem;
+ /** Protects ??*/
+ cfs_semaphore_t mc_fid_sem;
};
+/**
+ * mdc thread info. Local storage for varios data.
+ */
struct mdc_thread_info {
+ /** Storage for md_op_data */
struct md_op_data mci_opdata;
+ /** Storage for ptlrpc request */
struct ptlrpc_request *mci_req;
};
+/** mdc object. */
struct mdc_object {
- struct md_object mco_obj;
+ /** md_object instance for mdc_object */
+ struct md_object mco_obj;
};
+/** Get lu_device from mdc_device. */
static inline struct lu_device *mdc2lu_dev(struct mdc_device *mc)
{
- return (&mc->mc_md_dev.md_lu_dev);
+ return (&mc->mc_md_dev.md_lu_dev);
}
+/** Get mdc_device from md_device. */
static inline struct mdc_device *md2mdc_dev(struct md_device *md)
{
return container_of0(md, struct mdc_device, mc_md_dev);
}
+/** Get mdc_device from mdc_object. */
static inline struct mdc_device *mdc_obj2dev(struct mdc_object *mco)
{
- return (md2mdc_dev(md_obj2dev(&mco->mco_obj)));
+ return (md2mdc_dev(md_obj2dev(&mco->mco_obj)));
}
+/** Get mdc_object from lu_object. */
static inline struct mdc_object *lu2mdc_obj(struct lu_object *lo)
{
- return container_of0(lo, struct mdc_object, mco_obj.mo_lu);
+ return container_of0(lo, struct mdc_object, mco_obj.mo_lu);
}
+/** Get mdc_object from md_object. */
static inline struct mdc_object *md2mdc_obj(struct md_object *mo)
{
- return container_of0(mo, struct mdc_object, mco_obj);
+ return container_of0(mo, struct mdc_object, mco_obj);
}
+/** Get mdc_device from lu_device. */
static inline struct mdc_device *lu2mdc_dev(struct lu_device *ld)
{
- return container_of0(ld, struct mdc_device, mc_md_dev.md_lu_dev);
+ return container_of0(ld, struct mdc_device, mc_md_dev.md_lu_dev);
}
struct lu_object *mdc_object_alloc(const struct lu_env *,
int mdc_send_page(struct cmm_device *cmm, const struct lu_env *env,
struct md_object *mo, struct page *page, __u32 end);
#endif
-
+/** @} */
+/** @} */
#endif /* __KERNEL__ */
#endif /* _CMM_MDC_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff