exofs: super_operations and file_system_type

This patch ties all operation vectors into a file system superblock
and registers the exofs file_system_type at module's load time.

* The file system control block (AKA on-disk superblock) resides in
  an object with a special ID (defined in common.h).
  Information included in the file system control block is used to
  fill the in-memory superblock structure at mount time. This object
  is created before the file system is used by mkexofs.c It contains
  information such as:
	- The file system's magic number
	- The next inode number to be allocated

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index d11982c67e2a..11e11d5c97ba 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -140,6 +140,8 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
                 struct page **pagep, void **fsdata);
 extern struct inode *exofs_iget(struct super_block *, unsigned long);
 struct inode *exofs_new_inode(struct inode *, int);
+extern int exofs_write_inode(struct inode *, int);
+extern void exofs_delete_inode(struct inode *);
 
 /* dir.c:                */
 int exofs_add_link(struct dentry *, struct inode *);