/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free 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.
+ * 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.
*
- * 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
- * GNU General Public License for more details.
+ * 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
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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 2008 Sun Microsystems, Inc. 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.
*/
#ifndef __LUSTRE_LU_OBJECT_H
#define __LUSTRE_LU_OBJECT_H
+#include <stdarg.h>
+
/*
* struct lu_fid
*/
#include <lustre/lustre_idl.h>
-#include <libcfs/list.h>
-#include <libcfs/kp30.h>
+#include <libcfs/libcfs.h>
/*
* Layered objects support for CMD3/C5.
struct lu_device_type *t,
struct lustre_cfg *lcfg);
/*
- * Free device. Dual to ->ldto_device_alloc().
+ * Free device. Dual to ->ldto_device_alloc(). Returns pointer to
+ * the next device in the stack.
*/
- void (*ldto_device_free)(const struct lu_env *,
- struct lu_device *);
+ struct lu_device *(*ldto_device_free)(const struct lu_env *,
+ struct lu_device *);
/*
* Initialize the devices after allocation
__u32 la_flags; /* object flags */
__u32 la_nlink; /* number of persistent references to this
* object */
+ __u32 la_blkbits; /* blk bits of the object*/
__u32 la_blksize; /* blk size of the object*/
__u32 la_rdev; /* real device */
__u64 la_valid; /* valid bits */
};
-
/*
* Layer in the layered object.
*/
int lu_object_invariant(const struct lu_object *o);
/*
+ * Finalize and free devices in the device stack.
+ */
+void lu_stack_fini(const struct lu_env *env, struct lu_device *top);
+
+/*
* Returns 1 iff object @o exists on the stable storage,
* returns -1 iff object @o is on remote server.
*/
/*
* Attr of this object.
*/
-static inline const __u32 lu_object_attr(const struct lu_object *o)
+static inline __u32 lu_object_attr(const struct lu_object *o)
{
LASSERT(lu_object_exists(o) > 0);
return o->lo_header->loh_attr;
struct lu_rdpg {
/* input params, should be filled out by mdt */
- __u32 rp_hash; /* hash */
+ __u64 rp_hash; /* hash */
int rp_count; /* count in bytes */
int rp_npages; /* number of pages */
struct page **rp_pages; /* pointers to pages */
LU_XATTR_CREATE = (1 << 1)
};
+/* For lu_context health-checks */
+enum lu_context_state {
+ LCS_INITIALIZED = 1,
+ LCS_ENTERED,
+ LCS_LEFT,
+ LCS_FINALIZED
+};
+
/*
* lu_context. Execution context for lu_object methods. Currently associated
* with thread.
* detail.
*/
void **lc_value;
+ enum lu_context_state lc_state;
};
/*
struct module *lct_owner;
};
+#define LU_KEY_INIT(mod, type) \
+ static void* mod##_key_init(const struct lu_context *ctx, \
+ struct lu_context_key *key) \
+ { \
+ type *value; \
+ \
+ CLASSERT(CFS_PAGE_SIZE >= sizeof (*value)); \
+ \
+ OBD_ALLOC_PTR(value); \
+ if (value == NULL) \
+ value = ERR_PTR(-ENOMEM); \
+ \
+ return value; \
+ } \
+ struct __##mod##__dummy_init {;} /* semicolon catcher */
+
+#define LU_KEY_FINI(mod, type) \
+ static void mod##_key_fini(const struct lu_context *ctx, \
+ struct lu_context_key *key, void* data) \
+ { \
+ type *info = data; \
+ \
+ OBD_FREE_PTR(info); \
+ } \
+ struct __##mod##__dummy_fini {;} /* semicolon catcher */
+
+#define LU_KEY_INIT_FINI(mod, type) \
+ LU_KEY_INIT(mod,type); \
+ LU_KEY_FINI(mod,type)
+
+#define LU_CONTEXT_KEY_DEFINE(mod, tags) \
+ struct lu_context_key mod##_thread_key = { \
+ .lct_tags = tags, \
+ .lct_init = mod##_key_init, \
+ .lct_fini = mod##_key_fini \
+ }
+
#define LU_CONTEXT_KEY_INIT(key) \
do { \
(key)->lct_owner = THIS_MODULE; \
} while (0)
+
/*
* Register new key.
*/
* Deregister key.
*/
void lu_context_key_degister(struct lu_context_key *key);
+
+#define LU_KEY_REGISTER_GENERIC(mod) \
+ static int mod##_key_register_generic(struct lu_context_key *k, ...) \
+ { \
+ struct lu_context_key* key = k; \
+ va_list args; \
+ int result; \
+ \
+ va_start(args, k); \
+ \
+ do { \
+ LU_CONTEXT_KEY_INIT(key); \
+ result = lu_context_key_register(key); \
+ if (result) \
+ break; \
+ key = va_arg(args, struct lu_context_key*); \
+ } while (key != NULL); \
+ \
+ va_end(args); \
+ \
+ if (result) { \
+ va_start(args, k); \
+ while (k != key) { \
+ lu_context_key_degister(k); \
+ k = va_arg(args, struct lu_context_key*); \
+ } \
+ va_end(args); \
+ } \
+ \
+ return result; \
+ }
+
+#define LU_KEY_DEGISTER_GENERIC(mod) \
+ static void mod##_key_degister_generic(struct lu_context_key *k, ...) \
+ { \
+ va_list args; \
+ \
+ va_start(args, k); \
+ \
+ do { \
+ lu_context_key_degister(k); \
+ k = va_arg(args, struct lu_context_key*); \
+ } while (k != NULL); \
+ \
+ va_end(args); \
+ }
+
+#define LU_TYPE_INIT(mod, ...) \
+ LU_KEY_REGISTER_GENERIC(mod) \
+ static int mod##_type_init(struct lu_device_type *t) \
+ { \
+ return mod##_key_register_generic(__VA_ARGS__, NULL); \
+ } \
+ struct __##mod##_dummy_type_init {;}
+
+#define LU_TYPE_FINI(mod, ...) \
+ LU_KEY_DEGISTER_GENERIC(mod) \
+ static void mod##_type_fini(struct lu_device_type *t) \
+ { \
+ mod##_key_degister_generic(__VA_ARGS__, NULL); \
+ } \
+ struct __##mod##_dummy_type_fini {;}
+
+#define LU_TYPE_INIT_FINI(mod, ...) \
+ LU_TYPE_INIT(mod, __VA_ARGS__); \
+ LU_TYPE_FINI(mod, __VA_ARGS__)
+
/*
* Return value associated with key @key in context @ctx.
*/
git://git.whamcloud.com / fs / lustre-release.git / blobdiff