[PATCH] khugepaged: __collapse_huge_page_swapin(): drop unused 'pte' parameter

[Kirill A. Shutemov]

'pte' dereference is eliminated by compiler, since nobody uses the
pteval until it's overwritten inside the loop.

Value of 'pte' itself is overwritten by pte_offset_map() before first
real use.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
 mm/huge_memory.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 4b057abd8615..5ad5c443cc94 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2628,11 +2628,10 @@ static bool hugepage_vma_check(struct vm_area_struct *vma)
 
 static void __collapse_huge_page_swapin(struct mm_struct *mm,
 					struct vm_area_struct *vma,
-					unsigned long address, pmd_t *pmd,
-					pte_t *pte)
+					unsigned long address, pmd_t *pmd)
 {
 	unsigned long _address;
-	pte_t pteval = *pte;
+	pte_t *pte, pteval;
 	int swapped_in = 0, ret = 0;
 
 	pte = pte_offset_map(pmd, address);
@@ -2730,7 +2729,7 @@ static void collapse_huge_page(struct mm_struct *mm,
 
 	anon_vma_lock_write(vma->anon_vma);
 
-	__collapse_huge_page_swapin(mm, vma, address, pmd, pte);
+	__collapse_huge_page_swapin(mm, vma, address, pmd);
 
 	pte = pte_offset_map(pmd, address);
 	pte_ptl = pte_lockptr(mm, pmd);
-- 
 Kirill A. Shutemov
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