2006-01-16 23:50:04 +07:00
|
|
|
/*
|
|
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
2006-05-19 02:09:15 +07:00
|
|
|
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
|
2006-01-16 23:50:04 +07:00
|
|
|
*
|
|
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
2006-09-01 22:05:15 +07:00
|
|
|
* of the GNU General Public License version 2.
|
2006-01-16 23:50:04 +07:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <linux/completion.h>
|
|
|
|
#include <linux/buffer_head.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
2006-02-28 05:23:27 +07:00
|
|
|
#include <linux/gfs2_ondisk.h>
|
2011-01-19 16:30:01 +07:00
|
|
|
#include <linux/rcupdate.h>
|
|
|
|
#include <linux/rculist_bl.h>
|
2011-07-27 06:09:06 +07:00
|
|
|
#include <linux/atomic.h>
|
2012-03-08 19:10:23 +07:00
|
|
|
#include <linux/mempool.h>
|
2006-01-16 23:50:04 +07:00
|
|
|
|
|
|
|
#include "gfs2.h"
|
2006-02-28 05:23:27 +07:00
|
|
|
#include "incore.h"
|
2008-10-14 22:05:55 +07:00
|
|
|
#include "super.h"
|
2006-01-16 23:50:04 +07:00
|
|
|
#include "sys.h"
|
2006-02-28 05:23:27 +07:00
|
|
|
#include "util.h"
|
2006-09-08 01:40:21 +07:00
|
|
|
#include "glock.h"
|
2009-01-08 05:03:37 +07:00
|
|
|
#include "quota.h"
|
2010-07-21 03:09:02 +07:00
|
|
|
#include "recovery.h"
|
2010-09-17 18:30:23 +07:00
|
|
|
#include "dir.h"
|
2009-01-08 05:03:37 +07:00
|
|
|
|
2012-01-10 05:18:05 +07:00
|
|
|
struct workqueue_struct *gfs2_control_wq;
|
|
|
|
|
2009-01-08 05:03:37 +07:00
|
|
|
static struct shrinker qd_shrinker = {
|
|
|
|
.shrink = gfs2_shrink_qd_memory,
|
|
|
|
.seeks = DEFAULT_SEEKS,
|
|
|
|
};
|
2006-01-16 23:50:04 +07:00
|
|
|
|
2008-07-26 09:45:34 +07:00
|
|
|
static void gfs2_init_inode_once(void *foo)
|
2006-05-19 03:25:27 +07:00
|
|
|
{
|
|
|
|
struct gfs2_inode *ip = foo;
|
2007-05-17 12:10:57 +07:00
|
|
|
|
|
|
|
inode_init_once(&ip->i_inode);
|
|
|
|
init_rwsem(&ip->i_rw_mutex);
|
2008-11-18 20:38:48 +07:00
|
|
|
INIT_LIST_HEAD(&ip->i_trunc_list);
|
2011-11-22 01:36:17 +07:00
|
|
|
ip->i_res = NULL;
|
2011-06-15 16:29:37 +07:00
|
|
|
ip->i_hash_cache = NULL;
|
2006-05-19 03:25:27 +07:00
|
|
|
}
|
|
|
|
|
2008-07-26 09:45:34 +07:00
|
|
|
static void gfs2_init_glock_once(void *foo)
|
2006-08-30 21:36:52 +07:00
|
|
|
{
|
|
|
|
struct gfs2_glock *gl = foo;
|
2007-05-17 12:10:57 +07:00
|
|
|
|
2011-01-19 16:30:01 +07:00
|
|
|
INIT_HLIST_BL_NODE(&gl->gl_list);
|
2007-05-17 12:10:57 +07:00
|
|
|
spin_lock_init(&gl->gl_spin);
|
|
|
|
INIT_LIST_HEAD(&gl->gl_holders);
|
2008-11-20 20:39:47 +07:00
|
|
|
INIT_LIST_HEAD(&gl->gl_lru);
|
2007-05-17 12:10:57 +07:00
|
|
|
INIT_LIST_HEAD(&gl->gl_ail_list);
|
|
|
|
atomic_set(&gl->gl_ail_count, 0);
|
2011-04-14 22:50:31 +07:00
|
|
|
atomic_set(&gl->gl_revokes, 0);
|
2006-08-30 21:36:52 +07:00
|
|
|
}
|
|
|
|
|
2009-12-08 19:12:13 +07:00
|
|
|
static void gfs2_init_gl_aspace_once(void *foo)
|
|
|
|
{
|
|
|
|
struct gfs2_glock *gl = foo;
|
|
|
|
struct address_space *mapping = (struct address_space *)(gl + 1);
|
|
|
|
|
|
|
|
gfs2_init_glock_once(gl);
|
2011-02-23 19:49:47 +07:00
|
|
|
address_space_init_once(mapping);
|
2009-12-08 19:12:13 +07:00
|
|
|
}
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
/**
|
|
|
|
* init_gfs2_fs - Register GFS2 as a filesystem
|
|
|
|
*
|
|
|
|
* Returns: 0 on success, error code on failure
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int __init init_gfs2_fs(void)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
2010-09-17 18:30:23 +07:00
|
|
|
gfs2_str2qstr(&gfs2_qdot, ".");
|
|
|
|
gfs2_str2qstr(&gfs2_qdotdot, "..");
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
error = gfs2_sys_init();
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
2006-09-08 01:40:21 +07:00
|
|
|
error = gfs2_glock_init();
|
|
|
|
if (error)
|
|
|
|
goto fail;
|
2006-01-16 23:50:04 +07:00
|
|
|
|
2006-09-08 01:40:21 +07:00
|
|
|
error = -ENOMEM;
|
2006-01-16 23:50:04 +07:00
|
|
|
gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
|
|
|
|
sizeof(struct gfs2_glock),
|
2006-09-25 20:26:04 +07:00
|
|
|
0, 0,
|
2007-07-20 08:11:58 +07:00
|
|
|
gfs2_init_glock_once);
|
2006-01-16 23:50:04 +07:00
|
|
|
if (!gfs2_glock_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2010-03-13 00:05:31 +07:00
|
|
|
gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)",
|
2009-12-08 19:12:13 +07:00
|
|
|
sizeof(struct gfs2_glock) +
|
|
|
|
sizeof(struct address_space),
|
|
|
|
0, 0, gfs2_init_gl_aspace_once);
|
|
|
|
|
|
|
|
if (!gfs2_glock_aspace_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
|
|
|
|
sizeof(struct gfs2_inode),
|
2006-10-28 06:03:48 +07:00
|
|
|
0, SLAB_RECLAIM_ACCOUNT|
|
|
|
|
SLAB_MEM_SPREAD,
|
2007-07-20 08:11:58 +07:00
|
|
|
gfs2_init_inode_once);
|
2006-01-16 23:50:04 +07:00
|
|
|
if (!gfs2_inode_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
|
|
|
|
sizeof(struct gfs2_bufdata),
|
2007-07-20 08:11:58 +07:00
|
|
|
0, 0, NULL);
|
2006-01-16 23:50:04 +07:00
|
|
|
if (!gfs2_bufdata_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2008-01-29 06:20:26 +07:00
|
|
|
gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
|
|
|
|
sizeof(struct gfs2_rgrpd),
|
|
|
|
0, 0, NULL);
|
|
|
|
if (!gfs2_rgrpd_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2008-11-17 21:25:37 +07:00
|
|
|
gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
|
|
|
|
sizeof(struct gfs2_quota_data),
|
|
|
|
0, 0, NULL);
|
|
|
|
if (!gfs2_quotad_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2012-04-11 23:59:32 +07:00
|
|
|
gfs2_rsrv_cachep = kmem_cache_create("gfs2_mblk",
|
|
|
|
sizeof(struct gfs2_blkreserv),
|
|
|
|
0, 0, NULL);
|
|
|
|
if (!gfs2_rsrv_cachep)
|
|
|
|
goto fail;
|
|
|
|
|
2009-01-08 05:03:37 +07:00
|
|
|
register_shrinker(&qd_shrinker);
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
error = register_filesystem(&gfs2_fs_type);
|
|
|
|
if (error)
|
|
|
|
goto fail;
|
|
|
|
|
2006-03-03 04:33:41 +07:00
|
|
|
error = register_filesystem(&gfs2meta_fs_type);
|
|
|
|
if (error)
|
|
|
|
goto fail_unregister;
|
|
|
|
|
2010-07-21 03:09:02 +07:00
|
|
|
error = -ENOMEM;
|
|
|
|
gfs_recovery_wq = alloc_workqueue("gfs_recovery",
|
2011-02-16 15:25:31 +07:00
|
|
|
WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
|
2010-07-21 03:09:02 +07:00
|
|
|
if (!gfs_recovery_wq)
|
|
|
|
goto fail_wq;
|
2009-05-19 16:01:18 +07:00
|
|
|
|
2012-01-10 05:18:05 +07:00
|
|
|
gfs2_control_wq = alloc_workqueue("gfs2_control",
|
|
|
|
WQ_NON_REENTRANT | WQ_UNBOUND | WQ_FREEZABLE, 0);
|
|
|
|
if (!gfs2_control_wq)
|
2012-03-08 19:10:23 +07:00
|
|
|
goto fail_recovery;
|
|
|
|
|
2012-04-16 15:28:31 +07:00
|
|
|
gfs2_page_pool = mempool_create_page_pool(64, 0);
|
|
|
|
if (!gfs2_page_pool)
|
2012-01-10 05:18:05 +07:00
|
|
|
goto fail_control;
|
|
|
|
|
2007-03-16 17:26:37 +07:00
|
|
|
gfs2_register_debugfs();
|
|
|
|
|
2011-04-01 17:41:20 +07:00
|
|
|
printk("GFS2 installed\n");
|
2006-01-16 23:50:04 +07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2012-01-10 05:18:05 +07:00
|
|
|
fail_control:
|
2012-03-08 19:10:23 +07:00
|
|
|
destroy_workqueue(gfs2_control_wq);
|
|
|
|
fail_recovery:
|
2012-01-10 05:18:05 +07:00
|
|
|
destroy_workqueue(gfs_recovery_wq);
|
2010-07-21 03:09:02 +07:00
|
|
|
fail_wq:
|
2009-05-19 16:01:18 +07:00
|
|
|
unregister_filesystem(&gfs2meta_fs_type);
|
2006-03-03 04:33:41 +07:00
|
|
|
fail_unregister:
|
|
|
|
unregister_filesystem(&gfs2_fs_type);
|
|
|
|
fail:
|
2009-01-08 05:03:37 +07:00
|
|
|
unregister_shrinker(&qd_shrinker);
|
2007-08-01 19:57:10 +07:00
|
|
|
gfs2_glock_exit();
|
|
|
|
|
2012-04-11 23:59:32 +07:00
|
|
|
if (gfs2_rsrv_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_rsrv_cachep);
|
|
|
|
|
2008-11-17 21:25:37 +07:00
|
|
|
if (gfs2_quotad_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_quotad_cachep);
|
|
|
|
|
2008-01-29 06:20:26 +07:00
|
|
|
if (gfs2_rgrpd_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_rgrpd_cachep);
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
if (gfs2_bufdata_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_bufdata_cachep);
|
|
|
|
|
|
|
|
if (gfs2_inode_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_inode_cachep);
|
|
|
|
|
2009-12-08 19:12:13 +07:00
|
|
|
if (gfs2_glock_aspace_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_glock_aspace_cachep);
|
|
|
|
|
2006-01-16 23:50:04 +07:00
|
|
|
if (gfs2_glock_cachep)
|
|
|
|
kmem_cache_destroy(gfs2_glock_cachep);
|
|
|
|
|
|
|
|
gfs2_sys_uninit();
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* exit_gfs2_fs - Unregister the file system
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void __exit exit_gfs2_fs(void)
|
|
|
|
{
|
2009-01-08 05:03:37 +07:00
|
|
|
unregister_shrinker(&qd_shrinker);
|
2007-08-01 19:57:10 +07:00
|
|
|
gfs2_glock_exit();
|
2007-03-16 17:26:37 +07:00
|
|
|
gfs2_unregister_debugfs();
|
2006-01-16 23:50:04 +07:00
|
|
|
unregister_filesystem(&gfs2_fs_type);
|
2006-03-03 04:33:41 +07:00
|
|
|
unregister_filesystem(&gfs2meta_fs_type);
|
2010-07-21 03:09:02 +07:00
|
|
|
destroy_workqueue(gfs_recovery_wq);
|
2012-01-10 05:18:05 +07:00
|
|
|
destroy_workqueue(gfs2_control_wq);
|
2006-01-16 23:50:04 +07:00
|
|
|
|
2011-01-19 16:30:01 +07:00
|
|
|
rcu_barrier();
|
|
|
|
|
2012-04-16 15:28:31 +07:00
|
|
|
mempool_destroy(gfs2_page_pool);
|
2012-04-11 23:59:32 +07:00
|
|
|
kmem_cache_destroy(gfs2_rsrv_cachep);
|
2008-11-17 21:25:37 +07:00
|
|
|
kmem_cache_destroy(gfs2_quotad_cachep);
|
2008-01-29 06:20:26 +07:00
|
|
|
kmem_cache_destroy(gfs2_rgrpd_cachep);
|
2006-01-16 23:50:04 +07:00
|
|
|
kmem_cache_destroy(gfs2_bufdata_cachep);
|
|
|
|
kmem_cache_destroy(gfs2_inode_cachep);
|
2009-12-08 19:12:13 +07:00
|
|
|
kmem_cache_destroy(gfs2_glock_aspace_cachep);
|
2006-01-16 23:50:04 +07:00
|
|
|
kmem_cache_destroy(gfs2_glock_cachep);
|
|
|
|
|
|
|
|
gfs2_sys_uninit();
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION("Global File System");
|
|
|
|
MODULE_AUTHOR("Red Hat, Inc.");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
module_init(init_gfs2_fs);
|
|
|
|
module_exit(exit_gfs2_fs);
|
|
|
|
|