5cefcab3db
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (34 commits) [GFS2] Uncomment sprintf_symbol calling code [DLM] lowcomms style [GFS2] printk warning fixes [GFS2] Patch to fix mmap of stuffed files [GFS2] use lib/parser for parsing mount options [DLM] Lowcomms nodeid range & initialisation fixes [DLM] Fix dlm_lowcoms_stop hang [DLM] fix mode munging [GFS2] lockdump improvements [GFS2] Patch to detect corrupt number of dir entries in leaf and/or inode blocks [GFS2] bz 236008: Kernel gpf doing cat /debugfs/gfs2/xxx (lock dump) [DLM] fs/dlm/ast.c should #include "ast.h" [DLM] Consolidate transport protocols [DLM] Remove redundant assignment [GFS2] Fix bz 234168 (ignoring rgrp flags) [DLM] change lkid format [DLM] interface for purge (2/2) [DLM] add orphan purging code (1/2) [DLM] split create_message function [GFS2] Set drop_count to 0 (off) by default ...
150 lines
3.4 KiB
C
150 lines
3.4 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include <asm/atomic.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "ops_fstype.h"
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#include "sys.h"
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#include "util.h"
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#include "glock.h"
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static void gfs2_init_inode_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
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{
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struct gfs2_inode *ip = foo;
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if (flags & SLAB_CTOR_CONSTRUCTOR) {
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inode_init_once(&ip->i_inode);
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spin_lock_init(&ip->i_spin);
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init_rwsem(&ip->i_rw_mutex);
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memset(ip->i_cache, 0, sizeof(ip->i_cache));
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}
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}
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static void gfs2_init_glock_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
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{
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struct gfs2_glock *gl = foo;
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if (flags & SLAB_CTOR_CONSTRUCTOR) {
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INIT_HLIST_NODE(&gl->gl_list);
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spin_lock_init(&gl->gl_spin);
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INIT_LIST_HEAD(&gl->gl_holders);
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INIT_LIST_HEAD(&gl->gl_waiters1);
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INIT_LIST_HEAD(&gl->gl_waiters3);
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gl->gl_lvb = NULL;
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atomic_set(&gl->gl_lvb_count, 0);
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INIT_LIST_HEAD(&gl->gl_reclaim);
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INIT_LIST_HEAD(&gl->gl_ail_list);
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atomic_set(&gl->gl_ail_count, 0);
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}
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}
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/**
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* init_gfs2_fs - Register GFS2 as a filesystem
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*
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* Returns: 0 on success, error code on failure
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*/
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static int __init init_gfs2_fs(void)
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{
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int error;
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error = gfs2_sys_init();
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if (error)
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return error;
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error = gfs2_glock_init();
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if (error)
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goto fail;
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error = -ENOMEM;
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gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
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sizeof(struct gfs2_glock),
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0, 0,
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gfs2_init_glock_once, NULL);
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if (!gfs2_glock_cachep)
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goto fail;
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gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
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sizeof(struct gfs2_inode),
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0, SLAB_RECLAIM_ACCOUNT|
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SLAB_MEM_SPREAD,
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gfs2_init_inode_once, NULL);
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if (!gfs2_inode_cachep)
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goto fail;
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gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
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sizeof(struct gfs2_bufdata),
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0, 0, NULL, NULL);
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if (!gfs2_bufdata_cachep)
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goto fail;
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error = register_filesystem(&gfs2_fs_type);
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if (error)
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goto fail;
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error = register_filesystem(&gfs2meta_fs_type);
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if (error)
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goto fail_unregister;
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gfs2_register_debugfs();
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printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
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return 0;
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fail_unregister:
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unregister_filesystem(&gfs2_fs_type);
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fail:
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if (gfs2_bufdata_cachep)
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kmem_cache_destroy(gfs2_bufdata_cachep);
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if (gfs2_inode_cachep)
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kmem_cache_destroy(gfs2_inode_cachep);
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if (gfs2_glock_cachep)
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kmem_cache_destroy(gfs2_glock_cachep);
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gfs2_sys_uninit();
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return error;
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}
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/**
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* exit_gfs2_fs - Unregister the file system
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*
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*/
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static void __exit exit_gfs2_fs(void)
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{
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gfs2_unregister_debugfs();
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unregister_filesystem(&gfs2_fs_type);
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unregister_filesystem(&gfs2meta_fs_type);
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kmem_cache_destroy(gfs2_bufdata_cachep);
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kmem_cache_destroy(gfs2_inode_cachep);
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kmem_cache_destroy(gfs2_glock_cachep);
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gfs2_sys_uninit();
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}
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MODULE_DESCRIPTION("Global File System");
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MODULE_AUTHOR("Red Hat, Inc.");
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MODULE_LICENSE("GPL");
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module_init(init_gfs2_fs);
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module_exit(exit_gfs2_fs);
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