/* * 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, 2013, 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 */ #define DEBUG_SUBSYSTEM S_OSC /* class_name2obd() */ #include #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) { ENTRY; 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 */