X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fsuper25.c;h=b86010129fc71919240f63e00071227eae081c33;hb=afef2264887b5223d85d89c57fcd366601f22c39;hp=526776bfeaf25d448cec17afb9cd75c9f2d72063;hpb=57e6d88a8a8d858e2d74aeefba4c764ad08cf86d;p=fs%2Flustre-release.git diff --git a/lustre/llite/super25.c b/lustre/llite/super25.c index 526776b..b860101 100644 --- a/lustre/llite/super25.c +++ b/lustre/llite/super25.c @@ -1,24 +1,37 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Lustre Light Super operations + * GPL HEADER START * - * Copyright (c) 2002, 2003 Cluster File Systems, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of Lustre, http://www.lustre.org. + * 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 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 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 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. + * 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 * - * 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. + * 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. */ #define DEBUG_SUBSYSTEM S_LLITE @@ -27,35 +40,21 @@ #include #include #include -#include -#include -#include +#include +#include +#include #include #include -#include +#include #include "llite_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 cfs_mem_cache_t *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); + ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_ALLOC_INODE, 1); + OBD_SLAB_ALLOC_PTR_GFP(lli, ll_inode_cachep, CFS_ALLOC_IO); if (lli == NULL) return NULL; @@ -68,24 +67,14 @@ static struct inode *ll_alloc_inode(struct super_block *sb) static void ll_destroy_inode(struct inode *inode) { struct ll_inode_info *ptr = ll_i2info(inode); - OBD_SLAB_FREE(ptr, ll_inode_cachep, sizeof(*ptr)); -} - -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); + OBD_SLAB_FREE_PTR(ptr, ll_inode_cachep); } int ll_init_inodecache(void) { - ll_inode_cachep = kmem_cache_create("lustre_inode_cache", - sizeof(struct ll_inode_info), - 0, SLAB_HWCACHE_ALIGN, - init_once, NULL); + ll_inode_cachep = cfs_mem_cache_create("lustre_inode_cache", + sizeof(struct ll_inode_info), + 0, SLAB_HWCACHE_ALIGN); if (ll_inode_cachep == NULL) return -ENOMEM; return 0; @@ -93,77 +82,147 @@ int ll_init_inodecache(void) void ll_destroy_inodecache(void) { - if (kmem_cache_destroy(ll_inode_cachep)) - CERROR("ll_inode_cache: not all structures were freed\n"); + int rc; + + rc = cfs_mem_cache_destroy(ll_inode_cachep); + LASSERTF(rc == 0, "ll_inode_cache: not all structures were freed\n"); } /* exported operations */ struct super_operations lustre_super_operations = { - alloc_inode: ll_alloc_inode, - destroy_inode: ll_destroy_inode, - clear_inode: ll_clear_inode, - put_super: ll_put_super, - statfs: ll_statfs, - umount_begin: ll_umount_begin + .alloc_inode = ll_alloc_inode, + .destroy_inode = ll_destroy_inode, + .clear_inode = ll_clear_inode, + .delete_inode = ll_delete_inode, + .put_super = ll_put_super, + .statfs = ll_statfs, + .umount_begin = ll_umount_begin, + .remount_fs = ll_remount_fs, + .show_options = ll_show_options, }; -struct file_system_type lustre_lite_fs_type = { - .owner = THIS_MODULE, - .name = "lustre_lite", - .get_sb = ll_get_sb, - .kill_sb = kill_anon_super, -}; +void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg)); -struct file_system_type lustre_fs_type = { - .owner = THIS_MODULE, - .name = "lustre", - .get_sb = lustre_get_sb, - .kill_sb = kill_anon_super, -}; +int vvp_global_init(void); +void vvp_global_fini(void); static int __init init_lustre_lite(void) { - int rc; - printk(KERN_INFO "Lustre: Lustre Lite Client File System; " - "info@clusterfs.com\n"); + int i, rc, seed[2]; + struct timeval tv; + lnet_process_id_t lnet_id; + + /* 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_CONSOLE, "Lustre client module (%p).\n", + &lustre_super_operations); + 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); + ll_file_data_slab = cfs_mem_cache_create("ll_file_data", + sizeof(struct ll_file_data), 0, + SLAB_HWCACHE_ALIGN); if (ll_file_data_slab == NULL) { ll_destroy_inodecache(); return -ENOMEM; } + ll_remote_perm_cachep = cfs_mem_cache_create("ll_remote_perm_cache", + sizeof(struct ll_remote_perm), + 0, 0); + if (ll_remote_perm_cachep == NULL) { + cfs_mem_cache_destroy(ll_file_data_slab); + ll_file_data_slab = NULL; + ll_destroy_inodecache(); + return -ENOMEM; + } + + ll_rmtperm_hash_cachep = cfs_mem_cache_create("ll_rmtperm_hash_cache", + REMOTE_PERM_HASHSIZE * + sizeof(struct list_head), + 0, 0); + if (ll_rmtperm_hash_cachep == NULL) { + cfs_mem_cache_destroy(ll_remote_perm_cachep); + ll_remote_perm_cachep = NULL; + cfs_mem_cache_destroy(ll_file_data_slab); + ll_file_data_slab = NULL; + ll_destroy_inodecache(); + return -ENOMEM; + } + proc_lustre_fs_root = proc_lustre_root ? - proc_mkdir("llite", proc_lustre_root) : NULL; + lprocfs_register("llite", proc_lustre_root, NULL, NULL) : NULL; - rc = register_filesystem(&lustre_lite_fs_type); - if (!rc) { - rc = register_filesystem(&lustre_fs_type); - if (rc) - unregister_filesystem(&lustre_fs_type); + lustre_register_client_fill_super(ll_fill_super); + lustre_register_kill_super_cb(ll_kill_super); + + lustre_register_client_process_config(ll_process_config); + + ll_get_random_bytes(seed, sizeof(seed)); + + /* 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; + } + if (LNET_NETTYP(LNET_NIDNET(lnet_id.nid)) != LOLND) { + seed[0] ^= LNET_NIDADDR(lnet_id.nid); + } } + + do_gettimeofday(&tv); + ll_srand(tv.tv_sec ^ seed[0], tv.tv_usec ^ seed[1]); + + init_timer(&ll_capa_timer); + ll_capa_timer.function = ll_capa_timer_callback; + rc = ll_capa_thread_start(); + /* + * XXX normal cleanup is needed here. + */ + if (rc == 0) + rc = vvp_global_init(); + return rc; } static void __exit exit_lustre_lite(void) { - unregister_filesystem(&lustre_fs_type); - unregister_filesystem(&lustre_lite_fs_type); + int rc; + + vvp_global_fini(); + del_timer(&ll_capa_timer); + ll_capa_thread_stop(); + LASSERTF(capa_count[CAPA_SITE_CLIENT] == 0, + "client remaining capa count %d\n", + capa_count[CAPA_SITE_CLIENT]); + + lustre_register_client_fill_super(NULL); + lustre_register_kill_super_cb(NULL); + + lustre_register_client_process_config(NULL); + 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; - } + + rc = cfs_mem_cache_destroy(ll_rmtperm_hash_cachep); + LASSERTF(rc == 0, "couldn't destroy ll_rmtperm_hash_cachep\n"); + ll_rmtperm_hash_cachep = NULL; + + rc = cfs_mem_cache_destroy(ll_remote_perm_cachep); + LASSERTF(rc == 0, "couldn't destroy ll_remote_perm_cachep\n"); + ll_remote_perm_cachep = NULL; + + rc = cfs_mem_cache_destroy(ll_file_data_slab); + LASSERTF(rc == 0, "couldn't destroy ll_file_data slab\n"); + if (proc_lustre_fs_root) + lprocfs_remove(&proc_lustre_fs_root); } -MODULE_AUTHOR("Cluster File Systems, Inc. "); +MODULE_AUTHOR("Sun Microsystems, Inc. "); MODULE_DESCRIPTION("Lustre Lite Client File System"); MODULE_LICENSE("GPL");