mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks
authorMarek Szyprowski <m.szyprowski@samsung.com>
Wed, 25 Jan 2012 11:49:24 +0000 (12:49 +0100)
committerMarek Szyprowski <m.szyprowski@samsung.com>
Mon, 21 May 2012 13:09:36 +0000 (15:09 +0200)
commit49f223a9cd96c7293d7258ff88c2bdf83065f69c
tree4a141cbe4132ab2a5edfbc44165d091bb2289c75
parentbba9071087108d3de70bea274e35064cc480487b
mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks

alloc_contig_range() performs memory allocation so it also should keep
track on keeping the correct level of memory watermarks. This commit adds
a call to *_slowpath style reclaim to grab enough pages to make sure that
the final collection of contiguous pages from freelists will not starve
the system.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Michal Nazarewicz <mina86@mina86.com>
Tested-by: Rob Clark <rob.clark@linaro.org>
Tested-by: Ohad Ben-Cohen <ohad@wizery.com>
Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Tested-by: Robert Nelson <robertcnelson@gmail.com>
Tested-by: Barry Song <Baohua.Song@csr.com>
include/linux/mmzone.h
mm/page_alloc.c