1 files changed, 32 insertions, 0 deletions
diff --git a/0015-ZEN-Tune-mgLRU-to-protect-cache-used-in-the-last-sec.patch b/0015-ZEN-Tune-mgLRU-to-protect-cache-used-in-the-last-sec.patch
new file mode 100644
index 000000000000..8ee4aef66231
--- /dev/null
+++ b/0015-ZEN-Tune-mgLRU-to-protect-cache-used-in-the-last-sec.patch
@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Steven Barrett <steven@liquorix.net>
+Date: Wed, 11 Aug 2021 18:41:50 -0500
+Subject: [PATCH] ZEN: Tune mgLRU to protect cache used in the last second
+
+Although not identical to the le9 patches that protect a byte-amount of
+cache through tunables, multigenerational LRU now supports protecting
+cache accessed in the last X milliseconds.
+
+In #218, Yu recommends starting with 1000ms and tuning as needed.  This
+looks like a safe default and turning on this feature should help users
+that don't know they need it.
+---
+ mm/vmscan.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index aef71c45c424f046fe850a57c6b3fce10c63d93a..421e5a6eaedc2958e68dd67322b5725278ae5f38 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -4355,7 +4355,11 @@ static bool age_lruvec(struct lruvec *lruvec, struct scan_control *sc,
+ }
+ 
+ /* to protect the working set of the last N jiffies */
++#ifdef CONFIG_ZEN_INTERACTIVE
++static unsigned long lru_gen_min_ttl __read_mostly = HZ;
++#else
+ static unsigned long lru_gen_min_ttl __read_mostly;
++#endif
+ 
+ static void lru_gen_age_node(struct pglist_data *pgdat, struct scan_control *sc)
+ {