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authorWei Yang <richardw.yang@linux.intel.com>2019-11-30 17:57:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 12:59:09 -0800
commit4fb07ee6510280219403592e0a70c3b248b588c8 (patch)
tree57d45d34e514c0118c3241afdb6ceb4668b74287 /mm/userfaultfd.c
parentdf6c6500b4416baead2a1e17d9a80b675775c1df (diff)
userfaultfd: use vma_pagesize for all huge page size calculation
In __mcopy_atomic_hugetlb() we use two variables to deal with huge page size: vma_hpagesize and huge_page_size. Since they are the same, it is not necessary to use two different mechanism. This patch makes it consistent by all using vma_hpagesize. Link: http://lkml.kernel.org/r/20190927070032.2129-1-richardw.yang@linux.intel.com Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/userfaultfd.c')
-rw-r--r--mm/userfaultfd.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index 6d152741bb26..c545ee84331d 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -259,7 +259,7 @@ retry:
pte_t dst_pteval;
BUG_ON(dst_addr >= dst_start + len);
- VM_BUG_ON(dst_addr & ~huge_page_mask(h));
+ VM_BUG_ON(dst_addr & (vma_hpagesize - 1));
/*
* Serialize via hugetlb_fault_mutex
@@ -270,7 +270,7 @@ retry:
mutex_lock(&hugetlb_fault_mutex_table[hash]);
err = -ENOMEM;
- dst_pte = huge_pte_alloc(dst_mm, dst_addr, huge_page_size(h));
+ dst_pte = huge_pte_alloc(dst_mm, dst_addr, vma_hpagesize);
if (!dst_pte) {
mutex_unlock(&hugetlb_fault_mutex_table[hash]);
goto out_unlock;
@@ -297,7 +297,8 @@ retry:
err = copy_huge_page_from_user(page,
(const void __user *)src_addr,
- pages_per_huge_page(h), true);
+ vma_hpagesize / PAGE_SIZE,
+ true);
if (unlikely(err)) {
err = -EFAULT;
goto out;