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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).

[[email protected]: use conventional migratetype naming]
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Michal Nazarewicz <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2012-10-08 16:32:02 -07:00 • committed by Linus Torvalds
commit d1ce749a0d
5 changed files with 32 additions and 9 deletions
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1
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",