JFS: pageno needs to be long

diRead and diWrite are representing the page number as an unsigned int.
This causes file system corruption on volumes larger than 16TB.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>

fs/jfs/jfs_imap.c

@@ -318,7 +318,7 @@ int diRead(struct inode *ip)
 	struct inomap *imap;
 	int block_offset;
 	int inodes_left;
-	uint pageno;
+	unsigned long pageno;
 	int rel_inode;
 
 	jfs_info("diRead: ino = %ld", ip->i_ino);
@@ -606,7 +606,7 @@ int diWrite(tid_t tid, struct inode *ip)
 	int block_offset;
 	int inodes_left;
 	struct metapage *mp;
-	uint pageno;
+	unsigned long pageno;
 	int rel_inode;
 	int dioffset;
 	struct inode *ipimap;