@@ -1288,7 +1288,12 @@ PAGE_SIZE multiple when read back.
inactive_anon, active_anon, inactive_file, active_file, unevictable
Amount of memory, swap-backed and filesystem-backed,
on the internal memory management lists used by the
- page reclaim algorithm
+ page reclaim algorithm.
+
+ As these represent internal list state (eg. shmem pages are on anon
+ memory management lists), inactive_foo + active_foo may not be equal to
+ the value for the foo counter, since the foo counter is type-based, not
+ list-based.
slab_reclaimable
Part of "slab" that might be reclaimed, such as