Fix pointer mismatches in proc_sysctl.c

Fix pointer mismatches in proc_sysctl.c.  The proc_handler() method returns a
size_t through an arg pointer, but is given a pointer to a ssize_t to return
into.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/proc/proc_sysctl.c

@@ -171,7 +171,8 @@ static ssize_t proc_sys_read(struct file *filp, char __user *buf,
 	struct dentry *dentry = filp->f_dentry;
 	struct ctl_table_header *head;
 	struct ctl_table *table;
-	ssize_t error, res;
+	ssize_t error;
+	size_t res;
 
 	table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
 	/* Has the sysctl entry disappeared on us? */
@@ -209,7 +210,8 @@ static ssize_t proc_sys_write(struct file *filp, const char __user *buf,
 	struct dentry *dentry = filp->f_dentry;
 	struct ctl_table_header *head;
 	struct ctl_table *table;
-	ssize_t error, res;
+	ssize_t error;
+	size_t res;
 
 	table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
 	/* Has the sysctl entry disappeared on us? */