fs/userfaultfd.c: drop dead code

Calculation of start end end in __wake_userfault function are not used
and can be removed.

Link: http://lkml.kernel.org/r/1494930917-3134-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 6148ccd6cccf28f6c21be96bab078b65fcaafe9f..3d0dd082337a6d9b5b3efd3d19b8c193b9772f40 100644 (file)
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1114,11 +1114,6 @@ static ssize_t userfaultfd_read(struct file *file, char __user *buf,
 static void __wake_userfault(struct userfaultfd_ctx *ctx,
                             struct userfaultfd_wake_range *range)
 {
-       unsigned long start, end;
-
-       start = range->start;
-       end = range->start + range->len;
-
        spin_lock(&ctx->fault_pending_wqh.lock);
        /* wake all in the range and autoremove */
        if (waitqueue_active(&ctx->fault_pending_wqh))