docs: admin-guide: cgroup-v1: update description of inactive_file

MADV_FREE pages have been moved into the LRU_INACTIVE_FILE list by commit
f7ad2a6cb9f7 ("mm: move MADV_FREE pages into LRU_INACTIVE_FILE list").

Link: https://lkml.kernel.org/r/20221111034639.3593380-1-wenjian1@xiaomi.com
Signed-off-by: Jian Wen <wenjian1@xiaomi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/Documentation/admin-guide/cgroup-v1/memory.rst b/Documentation/admin-guide/cgroup-v1/memory.rst
index 5b86245..60370f2 100644 (file)
--- a/Documentation/admin-guide/cgroup-v1/memory.rst
+++ b/Documentation/admin-guide/cgroup-v1/memory.rst
@@ -543,7 +543,8 @@ inactive_anon       # of bytes of anonymous and swap cache memory on inactive
                LRU list.
 active_anon    # of bytes of anonymous and swap cache memory on active
                LRU list.
-inactive_file  # of bytes of file-backed memory on inactive LRU list.
+inactive_file  # of bytes of file-backed memory and MADV_FREE anonymous memory(
+                LazyFree pages) on inactive LRU list.
 active_file    # of bytes of file-backed memory on active LRU list.
 unevictable    # of bytes of memory that cannot be reclaimed (mlocked etc).
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