[GFS2] The core of GFS2

This patch contains all the core files for GFS2.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
new file mode 100644
index 000000000000..0c60f2b10fdd
--- /dev/null
+++ b/fs/gfs2/main.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2005 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.
+ */
+
+#include <linux/sched.h>
+#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>
+#include <asm/semaphore.h>
+
+#include "gfs2.h"
+#include "ops_fstype.h"
+#include "sys.h"
+
+/**
+ * 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;
+
+	gfs2_init_lmh();
+
+	error = gfs2_sys_init();
+	if (error)
+		return error;
+
+	error = -ENOMEM;
+
+	gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
+					      sizeof(struct gfs2_glock),
+					      0, 0, NULL, NULL);
+	if (!gfs2_glock_cachep)
+		goto fail;
+
+	gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
+					      sizeof(struct gfs2_inode),
+					      0, 0, NULL, NULL);
+	if (!gfs2_inode_cachep)
+		goto fail;
+
+	gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
+						sizeof(struct gfs2_bufdata),
+					        0, 0, NULL, NULL);
+	if (!gfs2_bufdata_cachep)
+		goto fail;
+
+	error = register_filesystem(&gfs2_fs_type);
+	if (error)
+		goto fail;
+
+	printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
+
+	return 0;
+
+ fail:
+	if (gfs2_bufdata_cachep)
+		kmem_cache_destroy(gfs2_bufdata_cachep);
+
+	if (gfs2_inode_cachep)
+		kmem_cache_destroy(gfs2_inode_cachep);
+
+	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)
+{
+	unregister_filesystem(&gfs2_fs_type);
+
+	kmem_cache_destroy(gfs2_bufdata_cachep);
+	kmem_cache_destroy(gfs2_inode_cachep);
+	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);
+