Messages in this thread Patch in this message |  | | From | Cody P Schafer <> | Subject | [PATCH 3/9] mm: add zone_is_empty() and zone_is_initialized() | Date | Thu, 17 Jan 2013 14:52:55 -0800 |
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Factoring out these 2 checks makes it more clear what we are actually checking for.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> --- include/linux/mmzone.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d91d964..696cb7c 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -553,6 +553,16 @@ static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn) return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone); } +static inline bool zone_is_initialized(struct zone *zone) +{ + return !!zone->wait_table; +} + +static inline bool zone_is_empty(struct zone *zone) +{ + return zone->spanned_pages == 0; +} + /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the -- 1.8.0.3
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