atomic: use <linux/atomic.h>
[linux-2.6.git] / fs / gfs2 / main.c
index b0a4582..8a139ff 100644 (file)
@@ -1,13 +1,12 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
  */
 
-#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/completion.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/gfs2_ondisk.h>
+#include <linux/rcupdate.h>
+#include <linux/rculist_bl.h>
+#include <linux/atomic.h>
 
 #include "gfs2.h"
-#include "lm_interface.h"
 #include "incore.h"
-#include "ops_fstype.h"
+#include "super.h"
 #include "sys.h"
 #include "util.h"
+#include "glock.h"
+#include "quota.h"
+#include "recovery.h"
+#include "dir.h"
+
+static struct shrinker qd_shrinker = {
+       .shrink = gfs2_shrink_qd_memory,
+       .seeks = DEFAULT_SEEKS,
+};
+
+static void gfs2_init_inode_once(void *foo)
+{
+       struct gfs2_inode *ip = foo;
+
+       inode_init_once(&ip->i_inode);
+       init_rwsem(&ip->i_rw_mutex);
+       INIT_LIST_HEAD(&ip->i_trunc_list);
+       ip->i_alloc = NULL;
+       ip->i_hash_cache = NULL;
+}
+
+static void gfs2_init_glock_once(void *foo)
+{
+       struct gfs2_glock *gl = foo;
+
+       INIT_HLIST_BL_NODE(&gl->gl_list);
+       spin_lock_init(&gl->gl_spin);
+       INIT_LIST_HEAD(&gl->gl_holders);
+       INIT_LIST_HEAD(&gl->gl_lru);
+       INIT_LIST_HEAD(&gl->gl_ail_list);
+       atomic_set(&gl->gl_ail_count, 0);
+       atomic_set(&gl->gl_revokes, 0);
+}
+
+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);
+       address_space_init_once(mapping);
+}
 
 /**
  * init_gfs2_fs - Register GFS2 as a filesystem
@@ -33,32 +76,61 @@ static int __init init_gfs2_fs(void)
 {
        int error;
 
-       gfs2_init_lmh();
+       gfs2_str2qstr(&gfs2_qdot, ".");
+       gfs2_str2qstr(&gfs2_qdotdot, "..");
 
        error = gfs2_sys_init();
        if (error)
                return error;
 
-       error = -ENOMEM;
+       error = gfs2_glock_init();
+       if (error)
+               goto fail;
 
+       error = -ENOMEM;
        gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
                                              sizeof(struct gfs2_glock),
-                                             0, 0, NULL, NULL);
+                                             0, 0,
+                                             gfs2_init_glock_once);
        if (!gfs2_glock_cachep)
                goto fail;
 
+       gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock(aspace)",
+                                       sizeof(struct gfs2_glock) +
+                                       sizeof(struct address_space),
+                                       0, 0, gfs2_init_gl_aspace_once);
+
+       if (!gfs2_glock_aspace_cachep)
+               goto fail;
+
        gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
                                              sizeof(struct gfs2_inode),
-                                             0, 0, NULL, NULL);
+                                             0,  SLAB_RECLAIM_ACCOUNT|
+                                                 SLAB_MEM_SPREAD,
+                                             gfs2_init_inode_once);
        if (!gfs2_inode_cachep)
                goto fail;
 
        gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
                                                sizeof(struct gfs2_bufdata),
-                                               0, 0, NULL, NULL);
+                                               0, 0, NULL);
        if (!gfs2_bufdata_cachep)
                goto fail;
 
+       gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
+                                             sizeof(struct gfs2_rgrpd),
+                                             0, 0, NULL);
+       if (!gfs2_rgrpd_cachep)
+               goto fail;
+
+       gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
+                                              sizeof(struct gfs2_quota_data),
+                                              0, 0, NULL);
+       if (!gfs2_quotad_cachep)
+               goto fail;
+
+       register_shrinker(&qd_shrinker);
+
        error = register_filesystem(&gfs2_fs_type);
        if (error)
                goto fail;
@@ -67,19 +139,41 @@ static int __init init_gfs2_fs(void)
        if (error)
                goto fail_unregister;
 
-       printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
+       error = -ENOMEM;
+       gfs_recovery_wq = alloc_workqueue("gfs_recovery",
+                                         WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
+       if (!gfs_recovery_wq)
+               goto fail_wq;
+
+       gfs2_register_debugfs();
+
+       printk("GFS2 installed\n");
 
        return 0;
 
+fail_wq:
+       unregister_filesystem(&gfs2meta_fs_type);
 fail_unregister:
        unregister_filesystem(&gfs2_fs_type);
 fail:
+       unregister_shrinker(&qd_shrinker);
+       gfs2_glock_exit();
+
+       if (gfs2_quotad_cachep)
+               kmem_cache_destroy(gfs2_quotad_cachep);
+
+       if (gfs2_rgrpd_cachep)
+               kmem_cache_destroy(gfs2_rgrpd_cachep);
+
        if (gfs2_bufdata_cachep)
                kmem_cache_destroy(gfs2_bufdata_cachep);
 
        if (gfs2_inode_cachep)
                kmem_cache_destroy(gfs2_inode_cachep);
 
+       if (gfs2_glock_aspace_cachep)
+               kmem_cache_destroy(gfs2_glock_aspace_cachep);
+
        if (gfs2_glock_cachep)
                kmem_cache_destroy(gfs2_glock_cachep);
 
@@ -94,11 +188,20 @@ fail:
 
 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);
+       destroy_workqueue(gfs_recovery_wq);
+
+       rcu_barrier();
 
+       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_aspace_cachep);
        kmem_cache_destroy(gfs2_glock_cachep);
 
        gfs2_sys_uninit();