Thanks, I admit I know nothing about sphinx, after google the similar warning, adding an extra line can fix this (I also noticed I should had named the file as sysfs but not sys to align with other ABI docs): >From ae3350752540696753940166e8e9f2da4b872760 Mon Sep 17 00:00:00 2001 From: Barry Song <v-songbaohua@xxxxxxxx> Date: Mon, 15 Apr 2024 17:37:04 +1200 Subject: [PATCH] sysfs-kernel-mm-transparent-hugepage: fix the name and unexpected indentation Signed-off-by: Barry Song <v-songbaohua@xxxxxxxx> --- ...transparent-hugepage => sysfs-kernel-mm-transparent-hugepage} | 1 + 1 file changed, 1 insertion(+) rename Documentation/ABI/testing/{sys-kernel-mm-transparent-hugepage => sysfs-kernel-mm-transparent-hugepage} (99%) diff --git a/Documentation/ABI/testing/sys-kernel-mm-transparent-hugepage b/Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage similarity index 99% rename from Documentation/ABI/testing/sys-kernel-mm-transparent-hugepage rename to Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage index 33163eba5342..7bfbb9cc2c11 100644 --- a/Documentation/ABI/testing/sys-kernel-mm-transparent-hugepage +++ b/Documentation/ABI/testing/sysfs-kernel-mm-transparent-hugepage @@ -4,6 +4,7 @@ Contact: Linux memory management mailing list <linux-mm@xxxxxxxxx> Description: /sys/kernel/mm/transparent_hugepage/ contains a number of files and subdirectories, + - defrag - enabled - hpage_pmd_size -- 2.34.1 > > Introduced by commit > > a70dabb40c3d ("mm: add docs for per-order mTHP counters and transhuge_page ABI") > > from the mm-unstable branch of the mm tree. > > -- > Cheers, > Stephen Rothwell Thanks Barry