The patch titled
Subject: include/linux/hugetlb.h: make hstate_is_gigantic() inline
has been added to the -mm tree. Its filename is
mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: include/linux/hugetlb.h: make hstate_is_gigantic() inline
Ignoring the argument of both alloc_huge_page_node() and
hstate_is_gigantic() causes a harmless warning:
mm/memory-failure.c: In function 'new_page':
mm/memory-failure.c:1493:18: error: unused variable 'hstate' [-Werror=unused-variable]
Turning one into an inline function makes the compiler see that the
variable is not meant to be unused.
Fixes: d81a077951f8 ("mm/madvise: enable (soft|hard) offline of HugeTLB pages at PGD level")
Fixes: 39b80148ffd7 ("mm/follow_page_mask: add support for hugepage directory entry")
Link: http://lkml.kernel.org/r/20170522124748.3911296-1-arnd@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/hugetlb.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN include/linux/hugetlb.h~mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix include/linux/hugetlb.h
--- a/include/linux/hugetlb.h~mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix
+++ a/include/linux/hugetlb.h
@@ -522,7 +522,11 @@ struct hstate {};
#define vma_mmu_pagesize(v) PAGE_SIZE
#define huge_page_order(h) 0
#define huge_page_shift(h) PAGE_SHIFT
-#define hstate_is_gigantic(h) 0
+static inline bool hstate_is_gigantic(struct hstate *h)
+{
+ return false;
+}
+
static inline unsigned int pages_per_huge_page(struct hstate *h)
{
return 1;
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
mm-madvise-enable-softhard-offline-of-hugetlb-pages-at-pgd-level-fix.patch
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