[PATCH] mm: vmevent: Report number of used swap pages, not totalamount of swap

[Anton Vorontsov]

I think the actual intent was to report the number of used swap pages, not
just total swap size.

This patch fixes the issue.

Signed-off-by: Anton Vorontsov <anton.vorontsov@xxxxxxxxxx>
---
 mm/vmevent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmevent.c b/mm/vmevent.c
index 1c2e72e..a059bed 100644
--- a/mm/vmevent.c
+++ b/mm/vmevent.c
@@ -46,7 +46,7 @@ static u64 vmevent_attr_swap_pages(struct vmevent_watch *watch,
 
 	si_swapinfo(&si);
 
-	return si.totalswap;
+	return si.totalswap - si.freeswap;
 #else
 	return 0;
 #endif
-- 
1.7.12.1
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