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mm,numa: reorganize change_pmd_range()

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Reorganize the order of ifs in change_pmd_range a little, in preparation
for the next patch.

[[email protected]: fix indenting, per David]
Signed-off-by: Rik van Riel <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Reported-by: Xing Gang <[email protected]>
Tested-by: Chegu Vinod <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Sasha Levin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Rik van Riel 2014-04-07 15:36:55 -07:00 • committed by Linus Torvalds
commit 88a9ab6e3d
1 changed files with 4 additions and 3 deletions
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7
mm/mprotect.c
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@ -118,6 +118,8 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma,
unsigned long this_pages;
next = pmd_addr_end(addr, end);
if (!pmd_trans_huge(*pmd) && pmd_none_or_clear_bad(pmd))
continue;
if (pmd_trans_huge(*pmd)) {
if (next - addr != HPAGE_PMD_SIZE)
split_huge_page_pmd(vma, addr, pmd);
@ -133,10 +135,9 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma,
continue;
}
}
/* fall through */
/* fall through, the trans huge pmd just split */
}
if (pmd_none_or_clear_bad(pmd))
continue;
VM_BUG_ON(pmd_trans_huge(*pmd));
this_pages = change_pte_range(vma, pmd, addr, next, newprot,
dirty_accountable, prot_numa);
pages += this_pages;