David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 10 | #include <linux/slab.h> |
| 11 | #include <linux/spinlock.h> |
| 12 | #include <linux/completion.h> |
| 13 | #include <linux/buffer_head.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/init.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 16 | #include <linux/gfs2_ondisk.h> |
Fabio Massimo Di Nitto | 7d30859 | 2006-09-19 07:56:29 +0200 | [diff] [blame] | 17 | #include <linux/lm_interface.h> |
Steven Whitehouse | ec45d9f | 2006-08-30 10:36:52 -0400 | [diff] [blame] | 18 | #include <asm/atomic.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 19 | |
| 20 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 21 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 22 | #include "ops_fstype.h" |
| 23 | #include "sys.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 24 | #include "util.h" |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 25 | #include "glock.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 27 | static void gfs2_init_inode_once(void *foo, struct kmem_cache *cachep, unsigned long flags) |
Steven Whitehouse | 320dd10 | 2006-05-18 16:25:27 -0400 | [diff] [blame] | 28 | { |
| 29 | struct gfs2_inode *ip = foo; |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 30 | |
| 31 | inode_init_once(&ip->i_inode); |
| 32 | spin_lock_init(&ip->i_spin); |
| 33 | init_rwsem(&ip->i_rw_mutex); |
| 34 | memset(ip->i_cache, 0, sizeof(ip->i_cache)); |
Steven Whitehouse | 320dd10 | 2006-05-18 16:25:27 -0400 | [diff] [blame] | 35 | } |
| 36 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 37 | static void gfs2_init_glock_once(void *foo, struct kmem_cache *cachep, unsigned long flags) |
Steven Whitehouse | ec45d9f | 2006-08-30 10:36:52 -0400 | [diff] [blame] | 38 | { |
| 39 | struct gfs2_glock *gl = foo; |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 40 | |
| 41 | INIT_HLIST_NODE(&gl->gl_list); |
| 42 | spin_lock_init(&gl->gl_spin); |
| 43 | INIT_LIST_HEAD(&gl->gl_holders); |
| 44 | INIT_LIST_HEAD(&gl->gl_waiters1); |
| 45 | INIT_LIST_HEAD(&gl->gl_waiters3); |
| 46 | gl->gl_lvb = NULL; |
| 47 | atomic_set(&gl->gl_lvb_count, 0); |
| 48 | INIT_LIST_HEAD(&gl->gl_reclaim); |
| 49 | INIT_LIST_HEAD(&gl->gl_ail_list); |
| 50 | atomic_set(&gl->gl_ail_count, 0); |
Steven Whitehouse | ec45d9f | 2006-08-30 10:36:52 -0400 | [diff] [blame] | 51 | } |
| 52 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 53 | /** |
| 54 | * init_gfs2_fs - Register GFS2 as a filesystem |
| 55 | * |
| 56 | * Returns: 0 on success, error code on failure |
| 57 | */ |
| 58 | |
| 59 | static int __init init_gfs2_fs(void) |
| 60 | { |
| 61 | int error; |
| 62 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 63 | error = gfs2_sys_init(); |
| 64 | if (error) |
| 65 | return error; |
| 66 | |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 67 | error = gfs2_glock_init(); |
| 68 | if (error) |
| 69 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 70 | |
Steven Whitehouse | 85d1da6 | 2006-09-07 14:40:21 -0400 | [diff] [blame] | 71 | error = -ENOMEM; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 72 | gfs2_glock_cachep = kmem_cache_create("gfs2_glock", |
| 73 | sizeof(struct gfs2_glock), |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 74 | 0, 0, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame^] | 75 | gfs2_init_glock_once); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 76 | if (!gfs2_glock_cachep) |
| 77 | goto fail; |
| 78 | |
| 79 | gfs2_inode_cachep = kmem_cache_create("gfs2_inode", |
| 80 | sizeof(struct gfs2_inode), |
Alexey Dobriyan | eb1dc33 | 2006-10-28 03:03:48 +0400 | [diff] [blame] | 81 | 0, SLAB_RECLAIM_ACCOUNT| |
| 82 | SLAB_MEM_SPREAD, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame^] | 83 | gfs2_init_inode_once); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 84 | if (!gfs2_inode_cachep) |
| 85 | goto fail; |
| 86 | |
| 87 | gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata", |
| 88 | sizeof(struct gfs2_bufdata), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame^] | 89 | 0, 0, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 90 | if (!gfs2_bufdata_cachep) |
| 91 | goto fail; |
| 92 | |
| 93 | error = register_filesystem(&gfs2_fs_type); |
| 94 | if (error) |
| 95 | goto fail; |
| 96 | |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 97 | error = register_filesystem(&gfs2meta_fs_type); |
| 98 | if (error) |
| 99 | goto fail_unregister; |
| 100 | |
Robert Peterson | 7c52b16 | 2007-03-16 10:26:37 +0000 | [diff] [blame] | 101 | gfs2_register_debugfs(); |
| 102 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 103 | printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); |
| 104 | |
| 105 | return 0; |
| 106 | |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 107 | fail_unregister: |
| 108 | unregister_filesystem(&gfs2_fs_type); |
| 109 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | if (gfs2_bufdata_cachep) |
| 111 | kmem_cache_destroy(gfs2_bufdata_cachep); |
| 112 | |
| 113 | if (gfs2_inode_cachep) |
| 114 | kmem_cache_destroy(gfs2_inode_cachep); |
| 115 | |
| 116 | if (gfs2_glock_cachep) |
| 117 | kmem_cache_destroy(gfs2_glock_cachep); |
| 118 | |
| 119 | gfs2_sys_uninit(); |
| 120 | return error; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * exit_gfs2_fs - Unregister the file system |
| 125 | * |
| 126 | */ |
| 127 | |
| 128 | static void __exit exit_gfs2_fs(void) |
| 129 | { |
Robert Peterson | 7c52b16 | 2007-03-16 10:26:37 +0000 | [diff] [blame] | 130 | gfs2_unregister_debugfs(); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 131 | unregister_filesystem(&gfs2_fs_type); |
Steven Whitehouse | 419c93e | 2006-03-02 16:33:41 -0500 | [diff] [blame] | 132 | unregister_filesystem(&gfs2meta_fs_type); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 133 | |
| 134 | kmem_cache_destroy(gfs2_bufdata_cachep); |
| 135 | kmem_cache_destroy(gfs2_inode_cachep); |
| 136 | kmem_cache_destroy(gfs2_glock_cachep); |
| 137 | |
| 138 | gfs2_sys_uninit(); |
| 139 | } |
| 140 | |
| 141 | MODULE_DESCRIPTION("Global File System"); |
| 142 | MODULE_AUTHOR("Red Hat, Inc."); |
| 143 | MODULE_LICENSE("GPL"); |
| 144 | |
| 145 | module_init(init_gfs2_fs); |
| 146 | module_exit(exit_gfs2_fs); |
| 147 | |