coda breakage

	a) switch by loff_t == __cmpdi2 use.  Replaced with a couple
of obvious ifs; update of ->f_pos in the first one makes sure that we
do the right thing in all cases.
	b) block_signals() and unblock_signals() are globals on UML.
Renamed coda ones; in principle UML probably ought to do rename as
well, but that's another story.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index e4e766e..cd561d2 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -632,7 +632,7 @@
 /*
  * coda_upcall and coda_downcall routines.
  */
-static void block_signals(sigset_t *old)
+static void coda_block_signals(sigset_t *old)
 {
 	spin_lock_irq(&current->sighand->siglock);
 	*old = current->blocked;
@@ -646,7 +646,7 @@
 	spin_unlock_irq(&current->sighand->siglock);
 }
 
-static void unblock_signals(sigset_t *old)
+static void coda_unblock_signals(sigset_t *old)
 {
 	spin_lock_irq(&current->sighand->siglock);
 	current->blocked = *old;
@@ -672,7 +672,7 @@
 	sigset_t old;
 	int blocked;
 
-	block_signals(&old);
+	coda_block_signals(&old);
 	blocked = 1;
 
 	add_wait_queue(&req->uc_sleep, &wait);
@@ -689,7 +689,7 @@
 		if (blocked && time_after(jiffies, timeout) &&
 		    CODA_INTERRUPTIBLE(req))
 		{
-			unblock_signals(&old);
+			coda_unblock_signals(&old);
 			blocked = 0;
 		}
 
@@ -704,7 +704,7 @@
 			schedule();
 	}
 	if (blocked)
-		unblock_signals(&old);
+		coda_unblock_signals(&old);
 
 	remove_wait_queue(&req->uc_sleep, &wait);
 	set_current_state(TASK_RUNNING);