From 7270aa836e5f17bdd1153000355845ae046159d4 Mon Sep 17 00:00:00 2001 From: Alistair Popple Date: Wed, 14 Jul 2021 21:26:58 -0700 Subject: [PATCH] lib/test_hmm: remove set but unused page variable The HMM selftests use atomic_check_access() to check atomic access to a page has been revoked. It doesn't matter if the page mapping has been removed from the mirrored page tables as that also implies atomic access has been revoked. Therefore remove the unused page variable to fix this compiler warning: lib/test_hmm.c:631:16: warning: variable `page' set but not used [-Wunused-but-set-variable] Link: https://lkml.kernel.org/r/20210706025603.4059-1-apopple@nvidia.com Fixes: 42ee4beb23cd ("mm: selftests for exclusive device memory") Signed-off-by: Alistair Popple Reported-by: Hulk Robot Reported-by: kernel test robot Reported-by: Yang Yingliang Acked-by: Souptick Joarder Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/test_hmm.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/lib/test_hmm.c b/lib/test_hmm.c index 8c55c47236929..c259842f6d443 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -628,10 +628,8 @@ static int dmirror_check_atomic(struct dmirror *dmirror, unsigned long start, for (pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); pfn++) { void *entry; - struct page *page; entry = xa_load(&dmirror->pt, pfn); - page = xa_untag_pointer(entry); if (xa_pointer_tag(entry) == DPT_XA_TAG_ATOMIC) return -EPERM; } -- 2.39.5