/*
* clean up on module removal
*/
static void __exit fscache_exit(void)
{
_enter("");
kobject_put(fscache_root);
kmem_cache_destroy(fscache_cookie_jar);
fscache_proc_cleanup();
slow_work_unregister_user(THIS_MODULE);
printk(KERN_NOTICE "FS-Cache: Unloaded\n");
}
static void __exit exit_gfs2_fs(void)
{
unregister_shrinker(&qd_shrinker);
gfs2_glock_exit();
gfs2_unregister_debugfs();
unregister_filesystem(&gfs2_fs_type);
unregister_filesystem(&gfs2meta_fs_type);
slow_work_unregister_user();
kmem_cache_destroy(gfs2_quotad_cachep);
kmem_cache_destroy(gfs2_rgrpd_cachep);
kmem_cache_destroy(gfs2_bufdata_cachep);
kmem_cache_destroy(gfs2_inode_cachep);
kmem_cache_destroy(gfs2_glock_cachep);
gfs2_sys_uninit();
}
/*
* initialise the fs caching module
*/
static int __init fscache_init(void)
{
int ret;
mark_tech_preview(NULL, THIS_MODULE);
ret = slow_work_register_user(THIS_MODULE);
if (ret < 0)
goto error_slow_work;
ret = fscache_proc_init();
if (ret < 0)
goto error_proc;
fscache_cookie_jar = kmem_cache_create("fscache_cookie_jar",
sizeof(struct fscache_cookie),
0,
0,
fscache_cookie_init_once);
if (!fscache_cookie_jar) {
printk(KERN_NOTICE
"FS-Cache: Failed to allocate a cookie jar\n");
ret = -ENOMEM;
goto error_cookie_jar;
}
fscache_root = kobject_create_and_add("fscache", kernel_kobj);
if (!fscache_root)
goto error_kobj;
printk(KERN_NOTICE "FS-Cache: Loaded\n");
return 0;
error_kobj:
kmem_cache_destroy(fscache_cookie_jar);
error_cookie_jar:
fscache_proc_cleanup();
error_proc:
slow_work_unregister_user(THIS_MODULE);
error_slow_work:
return ret;
}
