locks: remove unused posix_block_lock

posix_lock_file() is used to add a blocked lock to Lockd's block, so
posix_block_lock() is no longer needed.
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/locks.c

@@ -1954,21 +1954,6 @@ void locks_remove_flock(struct file *filp)
 	unlock_kernel();
 }
 
-/**
- *	posix_block_lock - blocks waiting for a file lock
- *	@blocker: the lock which is blocking
- *	@waiter: the lock which conflicts and has to wait
- *
- * lockd needs to block waiting for locks.
- */
-void
-posix_block_lock(struct file_lock *blocker, struct file_lock *waiter)
-{
-	locks_insert_block(blocker, waiter);
-}
-
-EXPORT_SYMBOL(posix_block_lock);
-
 /**
  *	posix_unblock_lock - stop waiting for a file lock
  *      @filp:   how the file was opened

include/linux/fs.h

@@ -757,7 +757,6 @@ extern void locks_remove_flock(struct file *);
 extern struct file_lock *posix_test_lock(struct file *, struct file_lock *);
 extern int posix_lock_file(struct file *, struct file_lock *);
 extern int posix_lock_file_wait(struct file *, struct file_lock *);
-extern void posix_block_lock(struct file_lock *, struct file_lock *);
 extern int posix_unblock_lock(struct file *, struct file_lock *);
 extern int posix_locks_deadlock(struct file_lock *, struct file_lock *);
 extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);