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author | Andrew Morton <akpm@linux-foundation.org> | 2012-11-17 02:15:06 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-17 02:33:04 +0400 |
commit | 5576646f3c1abd60d72d19829de6f5d8c2ca8ecf (patch) | |
tree | 600e8d1df6536bbeb0b15b51f137d37a94f69843 /CREDITS | |
parent | 0f3c42f522dc1ad7e27affc0a4aa8c790bce0a66 (diff) | |
download | linux-5576646f3c1abd60d72d19829de6f5d8c2ca8ecf.tar.xz |
revert "mm: fix-up zone present pages"
Revert commit 7f1290f2f2a4 ("mm: fix-up zone present pages")
That patch tried to fix a issue when calculating zone->present_pages,
but it caused a regression on 32bit systems with HIGHMEM. With that
change, reset_zone_present_pages() resets all zone->present_pages to
zero, and fixup_zone_present_pages() is called to recalculate
zone->present_pages when the boot allocator frees core memory pages into
buddy allocator. Because highmem pages are not freed by bootmem
allocator, all highmem zones' present_pages becomes zero.
Various options for improving the situation are being discussed but for
now, let's return to the 3.6 code.
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Petr Tesarik <ptesarik@suse.cz>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions