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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 <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christoph Hellwig 2019-08-06 19:05:50 +03:00 committed by Jason Gunthorpe
parent 9d3973d60f
commit 251bbe59b7
1 changed files with 4 additions and 4 deletions
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8
mm/hmm.c
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@ -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,