Commit 41b25a37 authored Apr 30, 2008 by KOSAKI Motohiro Committed by Linus Torvalds Apr 30, 2008

/proc/pagetypeinfo: fix output for memoryless nodes



on memoryless node, /proc/pagetypeinfo is displayed slightly funny output.
this patch fix it.

output example (header is outputed, but no data is outputed)
--------------------------------------------------------------
Page block order: 14
Pages per block:  16384

Free pages count per migrate type at order       0      1      2      3      4      5    \
  6      7      8      9     10     11     12     13     14     15     16

Number of blocks type     Unmovable  Reclaimable      Movable      Reserve      Isolate
Page block order: 14
Pages per block:  16384

Free pages count per migrate type at order       0      1      2      3      4      5    \
  6      7      8      9     10     11     12     13     14     15     16

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 2f351741

mm/vmstat.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -548,6 +548,10 @@ static int pagetypeinfo_show(struct seq_file m, void arg)
		{
		pg_data_t pgdat = (pg_data_t )arg;

		/* check memoryless node */
		if (!node_state(pgdat->node_id, N_HIGH_MEMORY))
		return 0;

		seq_printf(m, "Page block order: %d\n", pageblock_order);
		seq_printf(m, "Pages per block: %lu\n", pageblock_nr_pages);
		seq_putc(m, '\n');