Commit a0e4f7b82610 ("mm/hugetlb: make detecting shared pte more reliable")
modifies copy_hugetlb_page_range() such that huge_ptep_get(dst_pte) and the
local variable dst_entry is not used explicitly in this function.
Remove this unused local variable dst_entry in copy_hugetlb_page_range().
No functional change.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
---
mm/hugetlb.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9a72499486c1..6c00ba1dde32 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4763,7 +4763,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
struct vm_area_struct *dst_vma,
struct vm_area_struct *src_vma)
{
- pte_t *src_pte, *dst_pte, entry, dst_entry;
+ pte_t *src_pte, *dst_pte, entry;
struct page *ptepage;
unsigned long addr;
bool cow = is_cow_mapping(src_vma->vm_flags);
@@ -4823,7 +4823,6 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
src_ptl = huge_pte_lockptr(h, src, src_pte);
spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
entry = huge_ptep_get(src_pte);
- dst_entry = huge_ptep_get(dst_pte);
again:
if (huge_pte_none(entry)) {
/*
@@ -4906,7 +4905,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
restore_reserve_on_error(h, dst_vma, addr,
new);
put_page(new);
- /* dst_entry won't change as in child */
+ /* huge_ptep of dst_pte won't change as in child */
goto again;
}
hugetlb_install_page(dst_vma, dst_pte, addr, new);
--
2.17.1
