The patch titled
Subject: mm: hugetlb: bail out unmapping after serving reference page
has been removed from the -mm tree. Its filename was
mm-hugetlb-bail-out-unmapping-after-serving-reference-page.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Hillf Danton <dhillf@xxxxxxxxx>
Subject: mm: hugetlb: bail out unmapping after serving reference page
When unmapping a given VM range, we could bail out if a reference page is
supplied and is unmapped, which is a minor optimization.
Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN mm/hugetlb.c~mm-hugetlb-bail-out-unmapping-after-serving-reference-page mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-bail-out-unmapping-after-serving-reference-page
+++ a/mm/hugetlb.c
@@ -2280,6 +2280,10 @@ void __unmap_hugepage_range(struct vm_ar
if (pte_dirty(pte))
set_page_dirty(page);
list_add(&page->lru, &page_list);
+
+ /* Bail out after unmapping reference page if supplied */
+ if (ref_page)
+ break;
}
flush_tlb_range(vma, start, end);
spin_unlock(&mm->page_table_lock);
_
Patches currently in -mm which might be from dhillf@xxxxxxxxx are
origin.patch
mm-hugetlb-cleanup-duplicated-code-in-unmapping-vm-range.patch
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