cma: count free CMA pages
authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Mon, 8 Oct 2012 23:32:02 +0000 (16:32 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 9 Oct 2012 07:22:44 +0000 (16:22 +0900)
commitd1ce749a0db12202b711d1aba1d29e823034648d
treeb9b1f0e1d4fcda9ab900575f42f5ddc155d28648
parent2139cbe627b8910ded55148f87ee10f7485408ed
cma: count free CMA pages

Add NR_FREE_CMA_PAGES counter to be later used for checking watermark in
__zone_watermark_ok().  For simplicity and to avoid #ifdef hell make this
counter always available (not only when CONFIG_CMA=y).

[akpm@linux-foundation.org: use conventional migratetype naming]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/mmzone.h
include/linux/vmstat.h
mm/page_alloc.c
mm/page_isolation.c
mm/vmstat.c