fs/userfaultfd.c: remove redundant pointer uwq

Pointer uwq is being assigned but is never used hence it is redundant
and can be removed.

Cleans up clang warning:
  warning: variable 'uwq' set but not used [-Wunused-but-set-variable]

Link: http://lkml.kernel.org/r/20180717090802.18357-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
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 bad9cea..15c265d 100644 (file)
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1849,17 +1849,14 @@ static void userfaultfd_show_fdinfo(struct seq_file *m, struct file *f)
 {
        struct userfaultfd_ctx *ctx = f->private_data;
        wait_queue_entry_t *wq;
-       struct userfaultfd_wait_queue *uwq;
        unsigned long pending = 0, total = 0;
 
        spin_lock(&ctx->fault_pending_wqh.lock);
        list_for_each_entry(wq, &ctx->fault_pending_wqh.head, entry) {
-               uwq = container_of(wq, struct userfaultfd_wait_queue, wq);
                pending++;
                total++;
        }
        list_for_each_entry(wq, &ctx->fault_wqh.head, entry) {
-               uwq = container_of(wq, struct userfaultfd_wait_queue, wq);
                total++;
        }
        spin_unlock(&ctx->fault_pending_wqh.lock);