sysctl: remove "struct file *" argument of ->proc_handler

It's unused.

It isn't needed -- read or write flag is already passed and sysctl
shouldn't care about the rest.

It _was_ used in two places at arch/frv for some reason.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index df93473..bb41992 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3036,7 +3036,7 @@
 
 #ifdef CONFIG_SYSCTL
 static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
-					struct file *filp, void __user *buffer,
+					void __user *buffer,
 					size_t *lenp, loff_t *ppos)
 {
 	if (write) {
@@ -3046,7 +3046,7 @@
 
 		memcpy(&ctl, __ctl, sizeof(ctl));
 		ctl.data = &flush_delay;
-		proc_dointvec(&ctl, write, filp, buffer, lenp, ppos);
+		proc_dointvec(&ctl, write, buffer, lenp, ppos);
 
 		net = (struct net *)__ctl->extra1;
 		rt_cache_flush(net, flush_delay);
@@ -3106,12 +3106,11 @@
 }
 
 static int ipv4_sysctl_rt_secret_interval(ctl_table *ctl, int write,
-					  struct file *filp,
 					  void __user *buffer, size_t *lenp,
 					  loff_t *ppos)
 {
 	int old = ip_rt_secret_interval;
-	int ret = proc_dointvec_jiffies(ctl, write, filp, buffer, lenp, ppos);
+	int ret = proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos);
 
 	rt_secret_reschedule(old);