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mm, hugetlb: convert hugetlbfs to use split pmd lock

Browse source 
Hugetlb supports multiple page sizes. We use split lock only for PMD
level, but not for PUD.

[[email protected]: coding-style fixes]
Signed-off-by: Naoya Horiguchi <[email protected]>
Signed-off-by: Kirill A. Shutemov <[email protected]>
Tested-by: Alex Thorlton <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "Eric W . Biederman" <[email protected]>
Cc: "Paul E . McKenney" <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Dave Jones <[email protected]>
Cc: David Howells <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Michael Kerrisk <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Robin Holt <[email protected]>
Cc: Sedat Dilek <[email protected]>
Cc: Srikar Dronamraju <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2013-11-14 14:31:02 -08:00 • committed by Linus Torvalds
commit cb900f4121
7 changed files with 105 additions and 54 deletions
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7
mm/migrate.c
View file

@ -130,7 +130,7 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma,
ptep = huge_pte_offset(mm, addr);
if (!ptep)
goto out;
ptl = &mm->page_table_lock;
ptl = huge_pte_lockptr(hstate_vma(vma), mm, ptep);
} else {
pmd = mm_find_pmd(mm, addr);
if (!pmd)
@ -249,9 +249,10 @@ void migration_entry_wait(struct mm_struct *mm, pmd_t *pmd,
__migration_entry_wait(mm, ptep, ptl);
}
void migration_entry_wait_huge(struct mm_struct *mm, pte_t *pte)
void migration_entry_wait_huge(struct vm_area_struct *vma,
struct mm_struct *mm, pte_t *pte)
{
spinlock_t *ptl = &(mm)->page_table_lock;
spinlock_t *ptl = huge_pte_lockptr(hstate_vma(vma), mm, pte);
__migration_entry_wait(mm, pte, ptl);
}