mm: multi-gen LRU: section for rmap/PT walk feedback
Add a section for lru_gen_look_around() in the code and the design doc.
Link: https://lkml.kernel.org/r/20230118001827.1040870-3-talumbau@google.com
Signed-off-by: T.J. Alumbaugh <talumbau@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a741765..eb9263b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4569,6 +4569,10 @@ static void lru_gen_age_node(struct pglist_data *pgdat, struct scan_control *sc)
}
}
+/******************************************************************************
+ * rmap/PT walk feedback
+ ******************************************************************************/
+
/*
* This function exploits spatial locality when shrink_folio_list() walks the
* rmap. It scans the adjacent PTEs of a young PTE and promotes hot pages. If
