kernel_read: redefine offset type

vfs_read() offset is defined as loff_t, but kernel_read()
offset is only defined as unsigned long. Redefine
kernel_read() offset as loff_t.

Cc: stable@kernel.org
Signed-off-by: NMimi Zohar <zohar@us.ibm.com>
Signed-off-by: NJames Morris <jmorris@namei.org>

fs/exec.c

@@ -678,8 +678,8 @@ struct file *open_exec(const char *name)
 }
 EXPORT_SYMBOL(open_exec);
 
-int kernel_read(struct file *file, unsigned long offset,
-	char *addr, unsigned long count)
+int kernel_read(struct file *file, loff_t offset,
+		char *addr, unsigned long count)
 {
 	mm_segment_t old_fs;
 	loff_t pos = offset;

include/linux/fs.h

@@ -2123,7 +2123,7 @@ extern struct file *do_filp_open(int dfd, const char *pathname,
 		int open_flag, int mode, int acc_mode);
 extern int may_open(struct path *, int, int);
 
-extern int kernel_read(struct file *, unsigned long, char *, unsigned long);
+extern int kernel_read(struct file *, loff_t, char *, unsigned long);
 extern struct file * open_exec(const char *);
  
 /* fs/dcache.c -- generic fs support functions */