Messages in this thread | | | Subject | Re: [linux-next] rootfs: rootflags take effect when mount rootfs | From | chenweilong <> | Date | Mon, 28 Jun 2021 09:47:53 +0800 |
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On 2021/6/27 18:46, Greg KH wrote: > On Sat, Jun 26, 2021 at 09:16:55AM +0800, Weilong Chen wrote: >> The kernel root filesystem may use the rootflags parameters >> when mount, especially for tmpfs, to setup a variety of features. >> >> For example: >> 1. Add 'rootflags=huge=always' to boot args. >> 2. When the OS bootup: >> rootfs on / type rootfs (..., huge=always) >> Then we can get the hugepage performance improvement of tmpfs. >> >> Signed-off-by: Weilong Chen <chenweilong@huawei.com> >> --- >> fs/namespace.c | 5 +++-- >> include/linux/init.h | 2 +- >> init/do_mounts.c | 4 +++- >> 3 files changed, 7 insertions(+), 4 deletions(-) > No documentation update for this new user/kernel api you added?
There is already relevant documents (Documentation/admin-guide/kernel-parameters.txt)
description:
rootflags= [KNL] Set root filesystem mount option string
This patch make it work for tmpfs.
> .
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