From 251bbe59b7a6362f4c417aa8af281d44f9edfa0e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 6 Aug 2019 19:05:50 +0300 Subject: [PATCH] mm/hmm: cleanup the hmm_vma_walk_hugetlb_entry stub Stub out the whole function and assign NULL to the .hugetlb_entry method if CONFIG_HUGETLB_PAGE is not set, as the method won't ever be called in that case. Link: https://lore.kernel.org/r/20190806160554.14046-13-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe --- mm/hmm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/hmm.c b/mm/hmm.c index 900cb4837315..ef553e664061 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -774,11 +774,11 @@ again: #define hmm_vma_walk_pud NULL #endif +#ifdef CONFIG_HUGETLB_PAGE static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask, unsigned long start, unsigned long end, struct mm_walk *walk) { -#ifdef CONFIG_HUGETLB_PAGE unsigned long addr = start, i, pfn; struct hmm_vma_walk *hmm_vma_walk = walk->private; struct hmm_range *range = hmm_vma_walk->range; @@ -817,10 +817,10 @@ unlock: return hmm_vma_walk_hole_(addr, end, fault, write_fault, walk); return ret; -#else /* CONFIG_HUGETLB_PAGE */ - return -EINVAL; -#endif } +#else +#define hmm_vma_walk_hugetlb_entry NULL +#endif /* CONFIG_HUGETLB_PAGE */ static void hmm_pfns_clear(struct hmm_range *range, uint64_t *pfns,