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| author | Cody P Schafer <cody@linux.vnet.ibm.com> | 2013-02-22 16:35:23 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:20 -0800 |
| commit | 108bcc96ef7047c02cad4d229f04da38186a3f3f (patch) | |
| tree | e11d82074cae54dcf0fa8eea12750c661a16b02d /mm/vmstat.c | |
| parent | 9127ab4ff92f0ecd7b4671efa9d0edb21c691e9f (diff) | |
| download | lwn-108bcc96ef7047c02cad4d229f04da38186a3f3f.tar.gz lwn-108bcc96ef7047c02cad4d229f04da38186a3f3f.zip | |
mm: add & use zone_end_pfn() and zone_spans_pfn()
Add 2 helpers (zone_end_pfn() and zone_spans_pfn()) to reduce code
duplication.
This also switches to using them in compaction (where an additional
variable needed to be renamed), page_alloc, vmstat, memory_hotplug, and
kmemleak.
Note that in compaction.c I avoid calling zone_end_pfn() repeatedly
because I expect at some point the sycronization issues with start_pfn &
spanned_pages will need fixing, either by actually using the seqlock or
clever memory barrier usage.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: David Hansen <dave@linux.vnet.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 57f02fd1768b..e1d8ed172c42 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -891,7 +891,7 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m, int mtype; unsigned long pfn; unsigned long start_pfn = zone->zone_start_pfn; - unsigned long end_pfn = start_pfn + zone->spanned_pages; + unsigned long end_pfn = zone_end_pfn(zone); unsigned long count[MIGRATE_TYPES] = { 0, }; for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { |