linux-sg2042/arch/ia64/mm
Andrew Morton 5576646f3c revert "mm: fix-up zone present pages"
Revert commit 7f1290f2f2 ("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>
2012-11-16 14:33:04 -08:00
..
Makefile [PATCH] ia64: ioremap: check EFI for valid memory attributes 2006-03-26 08:56:54 -08:00
contig.c ia64: Use HAVE_MEMBLOCK_NODE_MAP 2011-12-08 10:22:08 -08:00
discontig.c arch, mm: filter disallowed nodes from arch specific show_mem functions 2011-05-25 08:39:03 -07:00
extable.c [IA64] fix compile error in arch/ia64/mm/extable.c 2009-06-15 09:17:50 -07:00
fault.c readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
hugetlbpage.c thp: pte alloc trans splitting 2011-01-13 17:32:40 -08:00
init.c revert "mm: fix-up zone present pages" 2012-11-16 14:33:04 -08:00
ioremap.c implement early_io{re,un}map for ia64 2009-12-16 02:45:10 +00:00
numa.c ia64: revert __node_random addition 2010-05-30 10:08:03 -07:00
tlb.c [IA64] Fix spinaphore down_spin() 2010-06-30 10:46:16 -07:00