From 9c54c522bb76cbef480722bd44059e2ba8304bd2 Mon Sep 17 00:00:00 2001 From: Muchun Song Date: Fri, 13 May 2022 16:48:56 -0700 Subject: mm: hugetlb_vmemmap: use kstrtobool for hugetlb_vmemmap param parsing Use kstrtobool rather than open coding "on" and "off" parsing in mm/hugetlb_vmemmap.c, which is more powerful to handle all kinds of parameters like 'Yy1Nn0' or [oO][NnFf] for "on" and "off". Link: https://lkml.kernel.org/r/20220512041142.39501-4-songmuchun@bytedance.com Signed-off-by: Muchun Song Reviewed-by: Mike Kravetz Cc: David Hildenbrand Cc: Iurii Zaikin Cc: Jonathan Corbet Cc: Kees Cook Cc: Luis Chamberlain Cc: Masahiro Yamada Cc: Oscar Salvador Cc: Xiongchun Duan Signed-off-by: Andrew Morton --- Documentation/admin-guide/kernel-parameters.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'Documentation/admin-guide') diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index d9b577db6e19..7e079b6994fe 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1664,10 +1664,10 @@ enabled. Allows heavy hugetlb users to free up some more memory (7 * PAGE_SIZE for each 2MB hugetlb page). - Format: { on | off (default) } + Format: { [oO][Nn]/Y/y/1 | [oO][Ff]/N/n/0 (default) } - on: enable the feature - off: disable the feature + [oO][Nn]/Y/y/1: enable the feature + [oO][Ff]/N/n/0: disable the feature Built with CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON=y, the default is on. -- cgit v1.2.3