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| author | Andrew Morton <akpm@linux-foundation.org> | 2012-11-16 23:15:06 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-16 23:33:04 +0100 |
| commit | 5576646f3c1abd60d72d19829de6f5d8c2ca8ecf (patch) | |
| tree | 600e8d1df6536bbeb0b15b51f137d37a94f69843 /arch | |
| parent | tmpfs: change final i_blocks BUG to WARNING (diff) | |
| download | linux-5576646f3c1abd60d72d19829de6f5d8c2ca8ecf.tar.xz linux-5576646f3c1abd60d72d19829de6f5d8c2ca8ecf.zip | |
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 'arch')
| -rw-r--r-- | arch/ia64/mm/init.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index acd5b68e8871..082e383c1b6f 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -637,7 +637,6 @@ mem_init (void) high_memory = __va(max_low_pfn * PAGE_SIZE); - reset_zone_present_pages(); for_each_online_pgdat(pgdat) if (pgdat->bdata->node_bootmem_map) totalram_pages += free_all_bootmem_node(pgdat); |