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Since some MM rework around 5.x the ps3 gelic ethernet driver quickly runs
out of memory to allocate. Tweak some defaults to avoid this as much as
possible.

--- linux-6.10/mm/page_alloc.c.vanilla	2024-08-15 18:25:26.514273117 +0200
+++ linux-6.10/mm/page_alloc.c	2024-08-15 18:26:44.068278120 +0200
@@ -269,9 +269,17 @@
 #endif
 };
 
+#ifdef CONFIG_PPC_PS3
+int min_free_kbytes = 2048;
+#else
 int min_free_kbytes = 1024;
+#endif
 int user_min_free_kbytes = -1;
+#ifdef CONFIG_PPC_PS3
+static int watermark_boost_factor __read_mostly;
+#else
 static int watermark_boost_factor __read_mostly = 15000;
+#endif
 static int watermark_scale_factor = 10;
 
 /* movable_zone is the "real" zone pages in ZONE_MOVABLE are taken from */