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Subject[PATCH] mm: remove unused pgdat->inactive_ratio
Date
Since commit 59dc76b0d4df ("mm: vmscan: reduce size of inactive file list")
'pgdat->inactive_ratio' is not used, except for printing
"node_inactive_ratio: 0" in /proc/zoneinfo output.

Remove it.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
---
include/linux/mmzone.h | 6 ------
mm/vmscan.c | 2 +-
mm/vmstat.c | 6 ++----
3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c8f89417740b..a6f361931d52 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -711,12 +711,6 @@ typedef struct pglist_data {
/* Fields commonly accessed by the page reclaim scanner */
struct lruvec lruvec;

- /*
- * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
- * this node's LRU. Maintained by the pageout code.
- */
- unsigned int inactive_ratio;
-
unsigned long flags;

ZONE_PADDING(_pad2_)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index d811c81ddb69..245b3d482791 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2081,7 +2081,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
* If that fails and refaulting is observed, the inactive list grows.
*
* The inactive_ratio is the target ratio of ACTIVE to INACTIVE pages
- * on this LRU, maintained by the pageout code. A zone->inactive_ratio
+ * on this LRU, maintained by the pageout code. An inactive_ratio
* of 3 means 3:1 or 25% of the pages are kept on the inactive list.
*
* total target max
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 7255c0a2a972..89d29802e709 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1682,11 +1682,9 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
}
seq_printf(m,
"\n node_unreclaimable: %u"
- "\n start_pfn: %lu"
- "\n node_inactive_ratio: %u",
+ "\n start_pfn: %lu",
pgdat->kswapd_failures >= MAX_RECLAIM_RETRIES,
- zone->zone_start_pfn,
- zone->zone_pgdat->inactive_ratio);
+ zone->zone_start_pfn);
seq_putc(m, '\n');
}

--
2.13.6
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