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authorChristoph Hellwig <hch@lst.de>2019-08-06 19:05:46 +0300
committerJason Gunthorpe <jgg@mellanox.com>2019-08-07 20:58:06 +0300
commit05c23af4a1b34df5838ebab2da1d6f802cf5ece3 (patch)
tree3de3e49b802fee934b3b5bac6ce247fe4dc3a0a3 /mm/hmm.c
parent7f08263d9bc6627382da14f9e81d643d0329d5d1 (diff)
downloadlinux-05c23af4a1b34df5838ebab2da1d6f802cf5ece3.tar.xz
mm/hmm: remove the mask variable in hmm_vma_walk_hugetlb_entry
The pagewalk code already passes the value as the hmask parameter. Link: https://lore.kernel.org/r/20190806160554.14046-9-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>
Diffstat (limited to 'mm/hmm.c')
-rw-r--r--mm/hmm.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/hmm.c b/mm/hmm.c
index 9e0052e037fe..4807f4b16736 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -778,19 +778,16 @@ static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask,
struct mm_walk *walk)
{
#ifdef CONFIG_HUGETLB_PAGE
- unsigned long addr = start, i, pfn, mask;
+ unsigned long addr = start, i, pfn;
struct hmm_vma_walk *hmm_vma_walk = walk->private;
struct hmm_range *range = hmm_vma_walk->range;
struct vm_area_struct *vma = walk->vma;
- struct hstate *h = hstate_vma(vma);
uint64_t orig_pfn, cpu_flags;
bool fault, write_fault;
spinlock_t *ptl;
pte_t entry;
int ret = 0;
- mask = huge_page_size(h) - 1;
-
ptl = huge_pte_lock(hstate_vma(vma), walk->mm, pte);
entry = huge_ptep_get(pte);
@@ -806,7 +803,7 @@ static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask,
goto unlock;
}
- pfn = pte_pfn(entry) + ((start & mask) >> PAGE_SHIFT);
+ pfn = pte_pfn(entry) + ((start & ~hmask) >> PAGE_SHIFT);
for (; addr < end; addr += PAGE_SIZE, i++, pfn++)
range->pfns[i] = hmm_device_entry_from_pfn(range, pfn) |
cpu_flags;