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cma: count free CMA pages

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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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2012-10-08 16:32:02 -07:00
committed by Linus Torvalds
parent 2139cbe627
commit d1ce749a0d
5 changed files with 32 additions and 9 deletions
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mm/vmstat.c
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@@ -722,6 +722,7 @@ const char * const vmstat_text[] = {
"numa_other",
#endif
"nr_anon_transparent_hugepages",
"nr_free_cma",
"nr_dirty_threshold",
"nr_dirty_background_threshold",