The patch titled
Subject: mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix
has been added to the -mm tree. Its filename is
mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix.patch
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Subject: mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix
drop unneeded pmd_trans_unstable(pmd) check after __split_huge_pmd()
index f9c07f54dd62..e919e4613eab 100644
Link: http://lkml.kernel.org/r/20170208120421.GE5578@xxxxxxxxxxxxxxxxxx
Reviewed-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mprotect.c | 2 --
1 file changed, 2 deletions(-)
diff -puN mm/mprotect.c~mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix mm/mprotect.c
--- a/mm/mprotect.c~mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix
+++ a/mm/mprotect.c
@@ -163,8 +163,6 @@ static inline unsigned long change_pmd_r
if (pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) {
if (next - addr != HPAGE_PMD_SIZE) {
__split_huge_pmd(vma, pmd, addr, false, NULL);
- if (pmd_trans_unstable(pmd))
- continue;
} else {
int nr_ptes = change_huge_pmd(vma, pmd, addr,
newprot, prot_numa);
_
Patches currently in -mm which might be from kirill@xxxxxxxxxxxxx are
mm-mprotect-use-pmd_trans_unstable-instead-of-taking-the-pmd_lock-fix.patch
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