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Revert "mm: make faultaround produce old ptes"

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This reverts commit 5c0a85fad9.

The commit causes ~6% regression in unixbench.

Let's revert it for now and consider other solution for reclaim problem
later.

Link: http://lkml.kernel.org/r/1465893750-44080-2-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <[email protected]>
Reported-by: "Huang, Ying" <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Vinayak Menon <[email protected]>
Cc: Dave Hansen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2016-06-24 14:49:45 -07:00 • committed by Linus Torvalds
commit 315d09bf30
3 changed files with 7 additions and 20 deletions
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2
mm/filemap.c
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@ -2186,7 +2186,7 @@ repeat:
if (file->f_ra.mmap_miss > 0)
file->f_ra.mmap_miss--;
addr = address + (page->index - vmf->pgoff) * PAGE_SIZE;
do_set_pte(vma, addr, page, pte, false, false, true);
do_set_pte(vma, addr, page, pte, false, false);
unlock_page(page);
goto next;
unlock: