commit 041d3a8cdc18dc375a128d90bbb753949a81b1fb
author Michal Nazarewicz <mina86@mina86.com> Thu Dec 29 13:09:50 2011 +0100
committer Marek Szyprowski <m.szyprowski@samsung.com> Mon May 21 15:09:31 2012 +0200
tree 26f5e1b30f638ea148e7deb13c44d0d0f1d39935
parent ff9543fd32060917beb080b1eb2d1d41ec7f39e0

mm: page_alloc: introduce alloc_contig_range()

This commit adds the alloc_contig_range() function which tries
to allocate given range of pages.  It tries to migrate all
already allocated pages that fall in the range thus freeing them.
Once all pages in the range are freed they are removed from the
buddy system thus allocated for the caller to use.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.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>