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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2016-01-15 16:53:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-15 17:56:32 -0800
commit4b471e8898c3d0f5c97a3c73ac32d0549fe01c87 (patch)
tree644aa22e14f779dc7aad0d169cfbd8abe9fdc6a6 /mm/rmap.c
parent1f19617d775879c0863e697fb648154e56918051 (diff)
mm, thp: remove infrastructure for handling splitting PMDs
With new refcounting we don't need to mark PMDs splitting. Let's drop code to handle this. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Sasha Levin <sasha.levin@oracle.com> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Jerome Marchand <jmarchan@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index c330f9aba63a..aa68a4089a53 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -843,8 +843,7 @@ static int page_referenced_one(struct page *page, struct vm_area_struct *vma,
* rmap might return false positives; we must filter
* these out using page_check_address_pmd().
*/
- pmd = page_check_address_pmd(page, mm, address,
- PAGE_CHECK_ADDRESS_PMD_FLAG, &ptl);
+ pmd = page_check_address_pmd(page, mm, address, &ptl);
if (!pmd)
return SWAP_AGAIN;
@@ -854,7 +853,6 @@ static int page_referenced_one(struct page *page, struct vm_area_struct *vma,
return SWAP_FAIL; /* To break the loop */
}
- /* go ahead even if the pmd is pmd_trans_splitting() */
if (pmdp_clear_flush_young_notify(vma, address, pmd))
referenced++;
spin_unlock(ptl);