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7b4b2a0d6c
linux-kernel-test/arch/metag/mm
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Jiang Liu 7b4b2a0d6c mm: accurately calculate zone->managed_pages for highmem zones 
Commit "mm: introduce new field 'managed_pages' to struct zone" assumes
that all highmem pages will be freed into the buddy system by function
mem_init().  But that's not always true, some architectures may reserve
some highmem pages during boot.  For example PPC may allocate highmem
pages for giagant HugeTLB pages, and several architectures have code to
check PageReserved flag to exclude highmem pages allocated during boot
when freeing highmem pages into the buddy system.

So treat highmem pages in the same way as normal pages, that is to:
1) reset zone->managed_pages to zero in mem_init().
2) recalculate managed_pages when freeing pages into the buddy system.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: <sworddragon2@aol.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:33 -07:00
..
cache.c metag: export metag_code_cache_flush_all 2013-03-02 20:11:12 +00:00
extable.c metag: Memory management 2013-03-02 20:09:19 +00:00
fault.c metag: Memory management 2013-03-02 20:09:19 +00:00
highmem.c metag: Highmem support 2013-03-02 20:09:20 +00:00
hugetlbpage.c metag: hugetlb: convert to vm_unmapped_area() 2013-03-02 20:11:13 +00:00
init.c mm: accurately calculate zone->managed_pages for highmem zones 2013-07-03 16:07:33 -07:00
ioremap.c metag: Memory handling 2013-03-02 20:09:19 +00:00
Kconfig Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
l2cache.c
maccess.c metag: Memory handling 2013-03-02 20:09:19 +00:00
Makefile metag: Build infrastructure 2013-03-02 20:09:54 +00:00
mmu-meta1.c metag: Memory management 2013-03-02 20:09:19 +00:00
mmu-meta2.c metag: Memory management 2013-03-02 20:09:19 +00:00
numa.c metag: TCM support 2013-03-02 20:09:21 +00:00