projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 06b3db1b DH |
1 | /* General filesystem local caching manager |
| 2 | * | |
| 3 | * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #define FSCACHE_DEBUG_LEVEL CACHE | |
| 13 | #include <linux/module.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/sched.h> | |
| 16 | #include <linux/completion.h> | |
| 17 | #include <linux/slab.h> | |
| 18 | #include "internal.h" | |
| 19 | ||
| 20 | MODULE_DESCRIPTION("FS Cache Manager"); | |
| 21 | MODULE_AUTHOR("Red Hat, Inc."); | |
| 22 | MODULE_LICENSE("GPL"); | |
| 23 | ||
| 24 | unsigned fscache_defer_lookup = 1; | |
| 25 | module_param_named(defer_lookup, fscache_defer_lookup, uint, | |
| 26 | S_IWUSR | S_IRUGO); | |
| 27 | MODULE_PARM_DESC(fscache_defer_lookup, | |
| 28 | "Defer cookie lookup to background thread"); | |
| 29 | ||
| 30 | unsigned fscache_defer_create = 1; | |
| 31 | module_param_named(defer_create, fscache_defer_create, uint, | |
| 32 | S_IWUSR | S_IRUGO); | |
| 33 | MODULE_PARM_DESC(fscache_defer_create, | |
| 34 | "Defer cookie creation to background thread"); | |
| 35 | ||
| 36 | unsigned fscache_debug; | |
| 37 | module_param_named(debug, fscache_debug, uint, | |
| 38 | S_IWUSR | S_IRUGO); | |
| 39 | MODULE_PARM_DESC(fscache_debug, | |
| 40 | "FS-Cache debugging mask"); | |
| 41 | ||
| 42 | struct kobject *fscache_root; | |
| 43 | ||
| 44 | /* | |
| 45 | * initialise the fs caching module | |
| 46 | */ | |
| 47 | static int __init fscache_init(void) | |
| 48 | { | |
| 49 | int ret; | |
| 50 | ||
| 51 | ret = slow_work_register_user(); | |
| 52 | if (ret < 0) | |
| 53 | goto error_slow_work; | |
| 54 | ||
| 7394daa8 DH |
55 | ret = fscache_proc_init(); |
| 56 | if (ret < 0) | |
| 57 | goto error_proc; | |
| 58 | ||
| 4c515dd4 DH |
59 | fscache_root = kobject_create_and_add("fscache", kernel_kobj); |
| 60 | if (!fscache_root) | |
| 61 | goto error_kobj; | |
| 62 | ||
| 06b3db1b DH |
63 | printk(KERN_NOTICE "FS-Cache: Loaded\n"); |
| 64 | return 0; | |
| 65 | ||
| 4c515dd4 DH |
66 | error_kobj: |
| 67 | fscache_proc_cleanup(); | |
| 7394daa8 DH |
68 | error_proc: |
| 69 | slow_work_unregister_user(); | |
| 06b3db1b DH |
70 | error_slow_work: |
| 71 | return ret; | |
| 72 | } | |
| 73 | ||
| 74 | fs_initcall(fscache_init); | |
| 75 | ||
| 76 | /* | |
| 77 | * clean up on module removal | |
| 78 | */ | |
| 79 | static void __exit fscache_exit(void) | |
| 80 | { | |
| 81 | _enter(""); | |
| 82 | ||
| 4c515dd4 | 83 | kobject_put(fscache_root); |
| 7394daa8 | 84 | fscache_proc_cleanup(); |
| 06b3db1b DH |
85 | slow_work_unregister_user(); |
| 86 | printk(KERN_NOTICE "FS-Cache: Unloaded\n"); | |
| 87 | } | |
| 88 | ||
| 89 | module_exit(fscache_exit); |