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mm/hugetlb.c: use huge_pte_lock instead of opencoding the lock
author
Aneesh Kumar K.V
<aneesh.kumar@linux.vnet.ibm.com>
Tue, 13 Dec 2016 00:41:59 +0000
(16:41 -0800)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Tue, 13 Dec 2016 02:55:07 +0000
(18:55 -0800)
No functional change by this patch.
Link:
http://lkml.kernel.org/r/20161018090234.22574-1-aneesh.kumar@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/hugetlb.c
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diff --git
a/mm/hugetlb.c
b/mm/hugetlb.c
index
23aec01
..
c12296f
100644
(file)
--- a/
mm/hugetlb.c
+++ b/
mm/hugetlb.c
@@
-3713,8
+3713,7
@@
retry:
vma_end_reservation(h, vma, address);
}
- ptl = huge_pte_lockptr(h, mm, ptep);
- spin_lock(ptl);
+ ptl = huge_pte_lock(h, mm, ptep);
size = i_size_read(mapping->host) >> huge_page_shift(h);
if (idx >= size)
goto backout;
@@
-4332,8
+4331,7
@@
pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud)
if (!spte)
goto out;
- ptl = huge_pte_lockptr(hstate_vma(vma), mm, spte);
- spin_lock(ptl);
+ ptl = huge_pte_lock(hstate_vma(vma), mm, spte);
if (pud_none(*pud)) {
pud_populate(mm, pud,
(pmd_t *)((unsigned long)spte & PAGE_MASK));