--- /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_object for LOVSUB layer.
+ *
+ * Author: Nikita Danilov <nikita.danilov@sun.com>
+ */
+
+#define DEBUG_SUBSYSTEM S_LOV
+
+#include "lov_cl_internal.h"
+
+/** \addtogroup lov
+ * @{
+ */
+
+/*****************************************************************************
+ *
+ * Lovsub object operations.
+ *
+ */
+
+int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
+ const struct lu_object_conf *conf)
+{
+ struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
+ struct lu_object *below;
+ struct lu_device *under;
+
+ int result;
+
+ under = &dev->acid_next->cd_lu_dev;
+ below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
+ if (below != NULL) {
+ lu_object_add(obj, below);
+ cl_object_page_init(lu2cl(obj), sizeof(struct lovsub_page));
+ result = 0;
+ } else
+ result = -ENOMEM;
+ return result;
+
+}
+
+static void lovsub_object_free(const struct lu_env *env, struct lu_object *obj)
+{
+ struct lovsub_object *los = lu2lovsub(obj);
+ struct lov_object *lov = los->lso_super;
+
+ /* We can't assume lov was assigned here, because of the shadow
+ * object handling in lu_object_find.
+ */
+ if (lov) {
+ LASSERT(lov->lo_type == LLT_RAID0);
+ LASSERT(lov->u.raid0.lo_sub[los->lso_index] == los);
+ spin_lock(&lov->u.raid0.lo_sub_lock);
+ lov->u.raid0.lo_sub[los->lso_index] = NULL;
+ spin_unlock(&lov->u.raid0.lo_sub_lock);
+ }
+
+ lu_object_fini(obj);
+ lu_object_header_fini(&los->lso_header.coh_lu);
+ OBD_SLAB_FREE_PTR(los, lovsub_object_kmem);
+}
+
+static int lovsub_object_print(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lu_object *obj)
+{
+ struct lovsub_object *los = lu2lovsub(obj);
+
+ return (*p)(env, cookie, "[%d]", los->lso_index);
+}
+
+static int lovsub_attr_set(const struct lu_env *env, struct cl_object *obj,
+ const struct cl_attr *attr, unsigned valid)
+{
+ struct lov_object *lov = cl2lovsub(obj)->lso_super;
+
+ lov_r0(lov)->lo_attr_valid = 0;
+ return 0;
+}
+
+static int lovsub_object_glimpse(const struct lu_env *env,
+ const struct cl_object *obj,
+ struct ost_lvb *lvb)
+{
+ struct lovsub_object *los = cl2lovsub(obj);
+
+ return cl_object_glimpse(env, &los->lso_super->lo_cl, lvb);
+}
+
+
+
+static const struct cl_object_operations lovsub_ops = {
+ .coo_page_init = lovsub_page_init,
+ .coo_lock_init = lovsub_lock_init,
+ .coo_attr_set = lovsub_attr_set,
+ .coo_glimpse = lovsub_object_glimpse
+};
+
+static const struct lu_object_operations lovsub_lu_obj_ops = {
+ .loo_object_init = lovsub_object_init,
+ .loo_object_delete = NULL,
+ .loo_object_release = NULL,
+ .loo_object_free = lovsub_object_free,
+ .loo_object_print = lovsub_object_print,
+ .loo_object_invariant = NULL
+};
+
+struct lu_object *lovsub_object_alloc(const struct lu_env *env,
+ const struct lu_object_header *unused,
+ struct lu_device *dev)
+{
+ struct lovsub_object *los;
+ struct lu_object *obj;
+
+ OBD_SLAB_ALLOC_PTR_GFP(los, lovsub_object_kmem, GFP_NOFS);
+ if (los != NULL) {
+ struct cl_object_header *hdr;
+
+ obj = lovsub2lu(los);
+ hdr = &los->lso_header;
+ cl_object_header_init(hdr);
+ lu_object_init(obj, &hdr->coh_lu, dev);
+ lu_object_add_top(&hdr->coh_lu, obj);
+ los->lso_cl.co_ops = &lovsub_ops;
+ obj->lo_ops = &lovsub_lu_obj_ops;
+ } else
+ obj = NULL;
+ return obj;
+}
+
+/** @} lov */
Code Review / kvmfornfv.git / blobdiff