struct super_block cleanup - efs

diff -urN linux-2.5.7-pre1/fs/efs/super.c linux/fs/efs/super.c
@@ -70,10 +70,17 @@
 		printk(KERN_INFO "efs_inode_cache: not all structures were freed\n");
 }
 
+void efs_put_super(struct super_block *s)
+{
+	kfree(s->u.generic_sbp);
+	s->u.generic_sbp = NULL;
+}
+
 static struct super_operations efs_superblock_operations = {
 	alloc_inode:	efs_alloc_inode,
 	destroy_inode:	efs_destroy_inode,
 	read_inode:	efs_read_inode,
+	put_super:	efs_put_super,
 	statfs:		efs_statfs,
 };
 

@@ -205,7 +212,11 @@
 	struct efs_sb_info *sb;
 	struct buffer_head *bh;
 
- 	sb = SUPER_INFO(s);
+ 	sb = kmalloc(sizeof(struct efs_sb_info), GFP_KERNEL);
+	if (!sb)
+		return -ENOMEM;
+	s->u.generic_sbp = sb;
+	memset(sb, 0, sizeof(struct efs_sb_info));
  
 	s->s_magic		= EFS_SUPER_MAGIC;
 	sb_set_blocksize(s, EFS_BLOCKSIZE);

@@ -263,6 +274,8 @@
 
 out_no_fs_ul:
 out_no_fs:
+	s->u.generic_sbp = NULL;
+	kfree(sb);
 	return -EINVAL;
 }
 

diff -urN linux-2.5.7-pre1/include/linux/efs_fs.h linux/include/linux/efs_fs.h
@@ -29,6 +29,7 @@
 
 #include <linux/fs.h>
 #include <linux/efs_fs_i.h>
+#include <linux/efs_fs_sb.h>
 #include <linux/efs_dir.h>
 
 #ifndef MIN

@@ -42,7 +43,11 @@
 {
 	return list_entry(inode, struct efs_inode_info, vfs_inode);
 }
-#define SUPER_INFO(s)				&((s)->u.efs_sb)
+
+static inline struct efs_sb_info *SUPER_INFO(struct super_block *sb)
+{
+	return sb->u.generic_sbp;
+}
 
 extern struct inode_operations efs_dir_inode_operations;
 extern struct file_operations efs_dir_operations;

diff -urN linux-2.5.7-pre1/include/linux/fs.h linux/include/linux/fs.h
@@ -658,7 +658,6 @@
 #include <linux/sysv_fs_sb.h>
 #include <linux/affs_fs_sb.h>
 #include <linux/ufs_fs_sb.h>
-#include <linux/efs_fs_sb.h>
 #include <linux/romfs_fs_sb.h>
 #include <linux/smb_fs_sb.h>
 #include <linux/hfs_fs_sb.h>

@@ -714,7 +713,6 @@
 		struct sysv_sb_info	sysv_sb;
 		struct affs_sb_info	affs_sb;
 		struct ufs_sb_info	ufs_sb;
-		struct efs_sb_info	efs_sb;
 		struct shmem_sb_info	shmem_sb;
 		struct romfs_sb_info	romfs_sb;
 		struct smb_sb_info	smbfs_sb;