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170a5a7eb2
linux/arch
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Jiang Liu 170a5a7eb2 mm: make __free_pages_bootmem() only available at boot time 
In order to simpilify management of totalram_pages and
zone->managed_pages, make __free_pages_bootmem() only available at boot
time.  With this change applied, __free_pages_bootmem() will only be
used by bootmem.c and nobootmem.c at boot time, so mark it as __init.
Other callers of __free_pages_bootmem() have been converted to use
free_reserved_page(), which handles totalram_pages and
zone->managed_pages in a safer way.

This patch also fix a bug in free_pagetable() for x86_64, which should
increase zone->managed_pages instead of zone->present_pages when freeing
reserved pages.

And now we have managed_pages_count_lock to protect totalram_pages and
zone->managed_pages, so remove the redundant ppb_lock lock in
put_page_bootmem().  This greatly simplifies the locking rules.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan@kernel.org>
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: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: Will Deacon <will.deacon@arm.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
..
alpha mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
arc mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
arm mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
arm64 mm/ARM64: kill poison_init_mem() 2013-07-03 16:07:32 -07:00
avr32 mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
blackfin mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
c6x mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
cris mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
frv mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
h8300 mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
hexagon consolidate io_remap_pfn_range definitions 2013-06-29 12:46:35 +04:00
ia64 mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
m32r mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
m68k mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
metag mm: accurately calculate zone->managed_pages for highmem zones 2013-07-03 16:07:33 -07:00
microblaze mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
mips mm: change signature of free_reserved_area() to fix building warnings 2013-07-03 16:07:32 -07:00
mn10300 mm: change signature of free_reserved_area() to fix building warnings 2013-07-03 16:07:32 -07:00
openrisc mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
parisc mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
powerpc mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
s390 mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
score mm: change signature of free_reserved_area() to fix building warnings 2013-07-03 16:07:32 -07:00
sh mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
sparc mm: change signature of free_reserved_area() to fix building warnings 2013-07-03 16:07:32 -07:00
tile mm/tile: use common help functions to free reserved pages 2013-07-03 16:07:33 -07:00
um mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
unicore32 mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
x86 mm: make __free_pages_bootmem() only available at boot time 2013-07-03 16:07:33 -07:00
xtensa mm: enhance free_reserved_area() to support poisoning memory with zero 2013-07-03 16:07:32 -07:00
.gitignore
Kconfig mm: soft-dirty bits for user memory changes tracking 2013-07-03 16:07:26 -07:00