--- /dev/null
+/*
+ * 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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * Implementation of cl_device, cl_req for OSC layer.
+ *
+ * Author: Nikita Danilov <nikita.danilov@sun.com>
+ */
+
+#define DEBUG_SUBSYSTEM S_OSC
+
+/* class_name2obd() */
+#include "../include/obd_class.h"
+
+#include "osc_cl_internal.h"
+
+/** \addtogroup osc
+ * @{
+ */
+
+struct kmem_cache *osc_lock_kmem;
+struct kmem_cache *osc_object_kmem;
+struct kmem_cache *osc_thread_kmem;
+struct kmem_cache *osc_session_kmem;
+struct kmem_cache *osc_req_kmem;
+struct kmem_cache *osc_extent_kmem;
+struct kmem_cache *osc_quota_kmem;
+
+struct lu_kmem_descr osc_caches[] = {
+ {
+ .ckd_cache = &osc_lock_kmem,
+ .ckd_name = "osc_lock_kmem",
+ .ckd_size = sizeof(struct osc_lock)
+ },
+ {
+ .ckd_cache = &osc_object_kmem,
+ .ckd_name = "osc_object_kmem",
+ .ckd_size = sizeof(struct osc_object)
+ },
+ {
+ .ckd_cache = &osc_thread_kmem,
+ .ckd_name = "osc_thread_kmem",
+ .ckd_size = sizeof(struct osc_thread_info)
+ },
+ {
+ .ckd_cache = &osc_session_kmem,
+ .ckd_name = "osc_session_kmem",
+ .ckd_size = sizeof(struct osc_session)
+ },
+ {
+ .ckd_cache = &osc_req_kmem,
+ .ckd_name = "osc_req_kmem",
+ .ckd_size = sizeof(struct osc_req)
+ },
+ {
+ .ckd_cache = &osc_extent_kmem,
+ .ckd_name = "osc_extent_kmem",
+ .ckd_size = sizeof(struct osc_extent)
+ },
+ {
+ .ckd_cache = &osc_quota_kmem,
+ .ckd_name = "osc_quota_kmem",
+ .ckd_size = sizeof(struct osc_quota_info)
+ },
+ {
+ .ckd_cache = NULL
+ }
+};
+
+struct lock_class_key osc_ast_guard_class;
+
+/*****************************************************************************
+ *
+ * Type conversions.
+ *
+ */
+
+static struct lu_device *osc2lu_dev(struct osc_device *osc)
+{
+ return &osc->od_cl.cd_lu_dev;
+}
+
+/*****************************************************************************
+ *
+ * Osc device and device type functions.
+ *
+ */
+
+static void *osc_key_init(const struct lu_context *ctx,
+ struct lu_context_key *key)
+{
+ struct osc_thread_info *info;
+
+ OBD_SLAB_ALLOC_PTR_GFP(info, osc_thread_kmem, GFP_NOFS);
+ if (info == NULL)
+ info = ERR_PTR(-ENOMEM);
+ return info;
+}
+
+static void osc_key_fini(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+ struct osc_thread_info *info = data;
+
+ OBD_SLAB_FREE_PTR(info, osc_thread_kmem);
+}
+
+struct lu_context_key osc_key = {
+ .lct_tags = LCT_CL_THREAD,
+ .lct_init = osc_key_init,
+ .lct_fini = osc_key_fini
+};
+
+static void *osc_session_init(const struct lu_context *ctx,
+ struct lu_context_key *key)
+{
+ struct osc_session *info;
+
+ OBD_SLAB_ALLOC_PTR_GFP(info, osc_session_kmem, GFP_NOFS);
+ if (info == NULL)
+ info = ERR_PTR(-ENOMEM);
+ return info;
+}
+
+static void osc_session_fini(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+ struct osc_session *info = data;
+
+ OBD_SLAB_FREE_PTR(info, osc_session_kmem);
+}
+
+struct lu_context_key osc_session_key = {
+ .lct_tags = LCT_SESSION,
+ .lct_init = osc_session_init,
+ .lct_fini = osc_session_fini
+};
+
+/* type constructor/destructor: osc_type_{init,fini,start,stop}(). */
+LU_TYPE_INIT_FINI(osc, &osc_key, &osc_session_key);
+
+static int osc_cl_process_config(const struct lu_env *env,
+ struct lu_device *d, struct lustre_cfg *cfg)
+{
+ return osc_process_config_base(d->ld_obd, cfg);
+}
+
+static const struct lu_device_operations osc_lu_ops = {
+ .ldo_object_alloc = osc_object_alloc,
+ .ldo_process_config = osc_cl_process_config,
+ .ldo_recovery_complete = NULL
+};
+
+static const struct cl_device_operations osc_cl_ops = {
+ .cdo_req_init = osc_req_init
+};
+
+static int osc_device_init(const struct lu_env *env, struct lu_device *d,
+ const char *name, struct lu_device *next)
+{
+ return 0;
+}
+
+static struct lu_device *osc_device_fini(const struct lu_env *env,
+ struct lu_device *d)
+{
+ return NULL;
+}
+
+static struct lu_device *osc_device_free(const struct lu_env *env,
+ struct lu_device *d)
+{
+ struct osc_device *od = lu2osc_dev(d);
+
+ cl_device_fini(lu2cl_dev(d));
+ OBD_FREE_PTR(od);
+ return NULL;
+}
+
+static struct lu_device *osc_device_alloc(const struct lu_env *env,
+ struct lu_device_type *t,
+ struct lustre_cfg *cfg)
+{
+ struct lu_device *d;
+ struct osc_device *od;
+ struct obd_device *obd;
+ int rc;
+
+ OBD_ALLOC_PTR(od);
+ if (od == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ cl_device_init(&od->od_cl, t);
+ d = osc2lu_dev(od);
+ d->ld_ops = &osc_lu_ops;
+ od->od_cl.cd_ops = &osc_cl_ops;
+
+ /* Setup OSC OBD */
+ obd = class_name2obd(lustre_cfg_string(cfg, 0));
+ LASSERT(obd != NULL);
+ rc = osc_setup(obd, cfg);
+ if (rc) {
+ osc_device_free(env, d);
+ return ERR_PTR(rc);
+ }
+ od->od_exp = obd->obd_self_export;
+ return d;
+}
+
+static const struct lu_device_type_operations osc_device_type_ops = {
+ .ldto_init = osc_type_init,
+ .ldto_fini = osc_type_fini,
+
+ .ldto_start = osc_type_start,
+ .ldto_stop = osc_type_stop,
+
+ .ldto_device_alloc = osc_device_alloc,
+ .ldto_device_free = osc_device_free,
+
+ .ldto_device_init = osc_device_init,
+ .ldto_device_fini = osc_device_fini
+};
+
+struct lu_device_type osc_device_type = {
+ .ldt_tags = LU_DEVICE_CL,
+ .ldt_name = LUSTRE_OSC_NAME,
+ .ldt_ops = &osc_device_type_ops,
+ .ldt_ctx_tags = LCT_CL_THREAD
+};
+
+/** @} osc */
Code Review / kvmfornfv.git / blobdiff