[PATCH v7 8/8] mm: Document the newly added mTHP zswpout stats, clarify swpout semantics.

[Kanchana P Sridhar]

Added documentation for the newly added sysfs mTHP "zswpout" stats.

Clarified that only non-ZSWAP mTHP swapouts will be accounted in the mTHP
"swpout" stats.

Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
---
 Documentation/admin-guide/mm/transhuge.rst | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst
index cfdd16a52e39..a65f905e9ca7 100644
--- a/Documentation/admin-guide/mm/transhuge.rst
+++ b/Documentation/admin-guide/mm/transhuge.rst
@@ -530,10 +530,14 @@ anon_fault_fallback_charge
 	instead falls back to using huge pages with lower orders or
 	small pages even though the allocation was successful.
 
-swpout
-	is incremented every time a huge page is swapped out in one
+zswpout
+	is incremented every time a huge page is swapped out to ZSWAP in one
 	piece without splitting.
 
+swpout
+	is incremented every time a huge page is swapped out to a non-ZSWAP
+	swap entity in one piece without splitting.
+
 swpout_fallback
 	is incremented if a huge page has to be split before swapout.
 	Usually because failed to allocate some continuous swap space
-- 
2.27.0