1 files changed, 7 insertions, 9 deletions
diff --git a/include/linux/zswap.h b/include/linux/zswap.h
index 6cecb4a4f68b..9cd1beef0654 100644
--- a/include/linux/zswap.h
+++ b/include/linux/zswap.h
@@ -13,17 +13,15 @@ extern atomic_t zswap_stored_pages;
 
 struct zswap_lruvec_state {
 	/*
-	 * Number of pages in zswap that should be protected from the shrinker.
-	 * This number is an estimate of the following counts:
+	 * Number of swapped in pages from disk, i.e not found in the zswap pool.
 	 *
-	 * a) Recent page faults.
-	 * b) Recent insertion to the zswap LRU. This includes new zswap stores,
-	 *    as well as recent zswap LRU rotations.
-	 *
-	 * These pages are likely to be warm, and might incur IO if the are written
-	 * to swap.
+	 * This is consumed and subtracted from the lru size in
+	 * zswap_shrinker_count() to penalize past overshrinking that led to disk
+	 * swapins. The idea is that had we considered this many more pages in the
+	 * LRU active/protected and not written them back, we would not have had to
+	 * swapped them in.
 	 */
-	atomic_long_t nr_zswap_protected;
+	atomic_long_t nr_disk_swapins;
 };
 
 unsigned long zswap_total_pages(void);