-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Lustre Light Super operations
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * 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 file is part of Lustre, http://www.lustre.org.
+ * 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).
*
- * 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.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
- * 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.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * 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.
+ * Copyright (c) 2011, 2016, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/module.h>
#include <linux/types.h>
-#include <linux/random.h>
#include <linux/version.h>
-#include <linux/lustre_lite.h>
-#include <linux/lustre_ha.h>
-#include <linux/lustre_dlm.h>
+#include <lustre_ha.h>
+#include <lustre_dlm.h>
#include <linux/init.h>
#include <linux/fs.h>
-#include <linux/lprocfs_status.h>
+#include <linux/random.h>
+#include <lprocfs_status.h>
#include "llite_internal.h"
+#include "vvp_internal.h"
-struct super_block * ll_get_sb(struct file_system_type *fs_type,
- int flags, const char *devname, void * data)
-{
- /* calls back in fill super */
- return get_sb_nodev(fs_type, flags, data, ll_fill_super);
-}
-
-struct super_block * lustre_get_sb(struct file_system_type *fs_type,
- int flags, const char *devname, void * data)
-{
- /* calls back in fill super */
- return get_sb_nodev(fs_type, flags, data, lustre_fill_super);
-}
-
-static kmem_cache_t *ll_inode_cachep;
+static struct kmem_cache *ll_inode_cachep;
static struct inode *ll_alloc_inode(struct super_block *sb)
{
- struct ll_inode_info *lli;
- lprocfs_counter_incr((ll_s2sbi(sb))->ll_stats, LPROC_LL_ALLOC_INODE);
- OBD_SLAB_ALLOC(lli, ll_inode_cachep, SLAB_KERNEL, sizeof *lli);
- if (lli == NULL)
- return NULL;
-
- inode_init_once(&lli->lli_vfs_inode);
- ll_lli_init(lli);
-
- return &lli->lli_vfs_inode;
+ struct ll_inode_info *lli;
+ ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_ALLOC_INODE, 1);
+ OBD_SLAB_ALLOC_PTR_GFP(lli, ll_inode_cachep, GFP_NOFS);
+ if (lli == NULL)
+ return NULL;
+
+ inode_init_once(&lli->lli_vfs_inode);
+ return &lli->lli_vfs_inode;
}
-static void ll_destroy_inode(struct inode *inode)
+#ifdef HAVE_INODE_I_RCU
+static void ll_inode_destroy_callback(struct rcu_head *head)
{
- struct ll_inode_info *ptr = ll_i2info(inode);
- OBD_SLAB_FREE(ptr, ll_inode_cachep, sizeof(*ptr));
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct ll_inode_info *ptr = ll_i2info(inode);
+ OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
}
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
-{
- struct ll_inode_info *lli = foo;
-
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(&lli->lli_vfs_inode);
-}
-
-int ll_init_inodecache(void)
+static void ll_destroy_inode(struct inode *inode)
{
- ll_inode_cachep = kmem_cache_create("lustre_inode_cache",
- sizeof(struct ll_inode_info),
- 0, SLAB_HWCACHE_ALIGN,
- init_once, NULL);
- if (ll_inode_cachep == NULL)
- return -ENOMEM;
- return 0;
+ call_rcu(&inode->i_rcu, ll_inode_destroy_callback);
}
-
-void ll_destroy_inodecache(void)
+#else
+static void ll_destroy_inode(struct inode *inode)
{
- if (kmem_cache_destroy(ll_inode_cachep))
- CERROR("ll_inode_cache: not all structures were freed\n");
+ struct ll_inode_info *ptr = ll_i2info(inode);
+ OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep);
}
+#endif
/* exported operations */
struct super_operations lustre_super_operations =
{
.alloc_inode = ll_alloc_inode,
.destroy_inode = ll_destroy_inode,
+#ifdef HAVE_SBOPS_EVICT_INODE
+ .evict_inode = ll_delete_inode,
+#else
.clear_inode = ll_clear_inode,
- .put_super = lustre_put_super,
+ .delete_inode = ll_delete_inode,
+#endif
+ .put_super = ll_put_super,
.statfs = ll_statfs,
- .umount_begin = ll_umount_begin
-};
-
-
-struct file_system_type lustre_lite_fs_type = {
- .owner = THIS_MODULE,
- .name = "lustre_lite",
- .get_sb = ll_get_sb,
- .kill_sb = kill_anon_super,
-};
-
-struct file_system_type lustre_fs_type = {
- .owner = THIS_MODULE,
- .name = "lustre",
- .get_sb = lustre_get_sb,
- .kill_sb = kill_anon_super,
+ .umount_begin = ll_umount_begin,
+ .remount_fs = ll_remount_fs,
+ .show_options = ll_show_options,
};
-static int __init init_lustre_lite(void)
+static int __init lustre_init(void)
{
- int rc;
- printk(KERN_INFO "Lustre: Lustre Lite Client File System; "
- "info@clusterfs.com\n");
- rc = ll_init_inodecache();
- if (rc)
- return -ENOMEM;
- ll_file_data_slab = kmem_cache_create("ll_file_data",
- sizeof(struct ll_file_data), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
- if (ll_file_data_slab == NULL) {
- ll_destroy_inodecache();
- return -ENOMEM;
- }
-
- proc_lustre_fs_root = proc_lustre_root ?
- proc_mkdir("llite", proc_lustre_root) : NULL;
-
- rc = register_filesystem(&lustre_lite_fs_type);
- if (!rc) {
- rc = register_filesystem(&lustre_fs_type);
- if (rc)
- unregister_filesystem(&lustre_fs_type);
- }
- return rc;
+ struct lnet_process_id lnet_id;
+ int i, rc;
+
+ CLASSERT(sizeof(LUSTRE_VOLATILE_HDR) == LUSTRE_VOLATILE_HDR_LEN + 1);
+
+ /* print an address of _any_ initialized kernel symbol from this
+ * module, to allow debugging with gdb that doesn't support data
+ * symbols from modules.*/
+ CDEBUG(D_INFO, "Lustre client module (%p).\n",
+ &lustre_super_operations);
+
+ ll_inode_cachep = kmem_cache_create("lustre_inode_cache",
+ sizeof(struct ll_inode_info),
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ if (ll_inode_cachep == NULL)
+ GOTO(out_cache, rc = -ENOMEM);
+
+ ll_file_data_slab = kmem_cache_create("ll_file_data",
+ sizeof(struct ll_file_data), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (ll_file_data_slab == NULL)
+ GOTO(out_cache, rc = -ENOMEM);
+
+ rc = llite_tunables_register();
+ if (rc)
+ GOTO(out_cache, rc);
+
+ /* Nodes with small feet have little entropy. The NID for this
+ * node gives the most entropy in the low bits. */
+ for (i = 0;; i++) {
+ if (LNetGetId(i, &lnet_id) == -ENOENT)
+ break;
+
+ add_device_randomness(&lnet_id.nid, sizeof(lnet_id.nid));
+ }
+
+ rc = vvp_global_init();
+ if (rc != 0)
+ GOTO(out_tunables, rc);
+
+ cl_inode_fini_env = cl_env_alloc(&cl_inode_fini_refcheck,
+ LCT_REMEMBER | LCT_NOREF);
+ if (IS_ERR(cl_inode_fini_env))
+ GOTO(out_vvp, rc = PTR_ERR(cl_inode_fini_env));
+
+ cl_inode_fini_env->le_ctx.lc_cookie = 0x4;
+
+ rc = ll_xattr_init();
+ if (rc != 0)
+ GOTO(out_inode_fini_env, rc);
+
+ lustre_register_client_fill_super(ll_fill_super);
+ lustre_register_kill_super_cb(ll_kill_super);
+
+ RETURN(0);
+
+out_inode_fini_env:
+ cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
+out_vvp:
+ vvp_global_fini();
+out_tunables:
+ llite_tunables_unregister();
+out_cache:
+ kmem_cache_destroy(ll_inode_cachep);
+ kmem_cache_destroy(ll_file_data_slab);
+ return rc;
}
-static void __exit exit_lustre_lite(void)
+static void __exit lustre_exit(void)
{
- unregister_filesystem(&lustre_fs_type);
- unregister_filesystem(&lustre_lite_fs_type);
- ll_destroy_inodecache();
- kmem_cache_destroy(ll_file_data_slab);
- if (proc_lustre_fs_root) {
- lprocfs_remove(proc_lustre_fs_root);
- proc_lustre_fs_root = NULL;
- }
+ lustre_register_client_fill_super(NULL);
+ lustre_register_kill_super_cb(NULL);
+
+ llite_tunables_unregister();
+
+ ll_xattr_fini();
+ cl_env_put(cl_inode_fini_env, &cl_inode_fini_refcheck);
+ vvp_global_fini();
+
+#ifdef HAVE_INODE_I_RCU
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
+#endif
+ kmem_cache_destroy(ll_inode_cachep);
+ kmem_cache_destroy(ll_file_data_slab);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre Lite Client File System");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre Client File System");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
-module_init(init_lustre_lite);
-module_exit(exit_lustre_lite);
+module_init(lustre_init);
+module_exit(lustre_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff