/usr/src/kernel-patches/lustre/patches/vm-tunables-rhel4.patch is in linux-patch-lustre 1.8.5+dfsg-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | Index: linux+rhel4+chaos/mm/page_alloc.c
===================================================================
--- linux+rhel4+chaos.orig/mm/page_alloc.c
+++ linux+rhel4+chaos/mm/page_alloc.c
@@ -1972,8 +1972,12 @@ static void setup_per_zone_pages_min(voi
lowmem_pages;
}
- zone->pages_low = zone->pages_min * 2;
- zone->pages_high = zone->pages_min * 3;
+ /*
+ * When interpreting these watermarks, just keep in mind that:
+ * zone->pages_min == (zone->pages_min * 4) / 4;
+ */
+ zone->pages_low = (zone->pages_min * 5) / 4;
+ zone->pages_high = (zone->pages_min * 6) / 4;
spin_unlock_irqrestore(&zone->lru_lock, flags);
}
}
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