-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Mike Pershin <tappro@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <linux/module.h>
-#include <lustre_ver.h>
#include "mdd_internal.h"
void mdd_write_lock(const struct lu_env *env, struct mdd_object *obj,
- enum mdd_object_role role)
+ enum dt_object_role role)
{
- struct dt_object *next = mdd_object_child(obj);
+ struct dt_object *next = mdd_object_child(obj);
- next->do_ops->do_write_lock(env, next, role);
+ dt_write_lock(env, next, role);
}
void mdd_read_lock(const struct lu_env *env, struct mdd_object *obj,
- enum mdd_object_role role)
+ enum dt_object_role role)
{
- struct dt_object *next = mdd_object_child(obj);
+ struct dt_object *next = mdd_object_child(obj);
- next->do_ops->do_read_lock(env, next, role);
+ dt_read_lock(env, next, role);
}
void mdd_write_unlock(const struct lu_env *env, struct mdd_object *obj)
{
- struct dt_object *next = mdd_object_child(obj);
+ struct dt_object *next = mdd_object_child(obj);
- next->do_ops->do_write_unlock(env, next);
+ dt_write_unlock(env, next);
}
void mdd_read_unlock(const struct lu_env *env, struct mdd_object *obj)
{
- struct dt_object *next = mdd_object_child(obj);
+ struct dt_object *next = mdd_object_child(obj);
- next->do_ops->do_read_unlock(env, next);
+ dt_read_unlock(env, next);
}
int mdd_write_locked(const struct lu_env *env, struct mdd_object *obj)
{
- struct dt_object *next = mdd_object_child(obj);
-
- return next->do_ops->do_write_locked(env, next);
-}
-
-unsigned long mdd_name2hash(const char *name)
-{
- return full_name_hash((unsigned char*)name, strlen(name));
-}
-
-/* Methods for parallel directory locking */
-#if MDD_DISABLE_PDO_LOCK
-
-static void *pdo_handle = (void *)0xbabecafe;
-
-void mdd_pdlock_init(struct mdd_object *obj)
-{
-}
-
-void *mdd_pdo_write_lock(const struct lu_env *env, struct mdd_object *obj,
- const char *name, enum mdd_object_role role)
-{
- return pdo_handle;
-}
-
-void *mdd_pdo_read_lock(const struct lu_env *env, struct mdd_object *obj,
- const char *name, enum mdd_object_role role)
-{
- return pdo_handle;
-}
-
-void mdd_pdo_write_unlock(const struct lu_env *env, struct mdd_object *obj,
- void *dlh)
-{
- LASSERT(dlh == pdo_handle);
-}
-
-void mdd_pdo_read_unlock(const struct lu_env *env, struct mdd_object *obj,
- void *dlh)
-{
- LASSERT(dlh == pdo_handle);
-}
-
-#else /* !MDD_DISABLE_PDO_LOCK */
-
-#ifdef CONFIG_LOCKDEP
-static cfs_lock_class_key_t mdd_pdirop_key;
-
-#define RETIP ((unsigned long)__builtin_return_address(0))
-
-static void mdd_lockdep_init(struct mdd_object *obj)
-{
- lockdep_set_class_and_name(obj, &mdd_pdirop_key, "pdir");
-}
-
-static void mdd_lockdep_pd_acquire(struct mdd_object *obj,
- enum mdd_object_role role)
-{
-#ifdef HAVE_LOCK_MAP_ACQUIRE
- lock_map_acquire(&obj->dep_map);
-#else
- lock_acquire(&obj->dep_map, role, 0, 1, 2, RETIP);
-#endif
-}
-
-static void mdd_lockdep_pd_release(struct mdd_object *obj)
-{
-#ifdef HAVE_LOCK_MAP_ACQUIRE
- lock_map_release(&obj->dep_map);
-#else
- lock_release(&obj->dep_map, 0, RETIP);
-#endif
-}
-
-#else /* !CONFIG_LOCKDEP */
-
-static void mdd_lockdep_init(struct mdd_object *obj)
-{}
-static void mdd_lockdep_pd_acquire(struct mdd_object *obj,
- enum mdd_object_role role)
-{}
-static void mdd_lockdep_pd_release(struct mdd_object *obj)
-{}
-
-#endif /* !CONFIG_LOCKDEP */
-
-void mdd_pdlock_init(struct mdd_object *obj)
-{
- dynlock_init(&obj->mod_pdlock);
- mdd_lockdep_init(obj);
-}
-
-void *mdd_pdo_write_lock(const struct lu_env *env, struct mdd_object *obj,
- const char *name, enum mdd_object_role role)
-{
- struct dynlock_handle *handle;
- unsigned long value = mdd_name2hash(name);
-
- handle = dynlock_lock(&obj->mod_pdlock, value, DLT_WRITE, GFP_NOFS);
- if (handle != NULL)
- mdd_lockdep_pd_acquire(obj, role);
- return handle;
-}
-
-void *mdd_pdo_read_lock(const struct lu_env *env, struct mdd_object *obj,
- const char *name, enum mdd_object_role role)
-{
- struct dynlock_handle *handle;
- unsigned long value = mdd_name2hash(name);
- handle = dynlock_lock(&obj->mod_pdlock, value, DLT_READ, GFP_NOFS);
- if (handle != NULL)
- mdd_lockdep_pd_acquire(obj, role);
- return handle;
-}
+ struct dt_object *next = mdd_object_child(obj);
-void mdd_pdo_write_unlock(const struct lu_env *env, struct mdd_object *obj,
- void *dlh)
-{
- mdd_lockdep_pd_release(obj);
- return dynlock_unlock(&obj->mod_pdlock, dlh);
+ return dt_write_locked(env, next);
}
-
-void mdd_pdo_read_unlock(const struct lu_env *env, struct mdd_object *obj,
- void *dlh)
-{
- mdd_lockdep_pd_release(obj);
- return dynlock_unlock(&obj->mod_pdlock, dlh);
-}
-
-#endif /* MDD_DISABLE_PDO_LOCK */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff