Re: [PATCH 9/9] man/man2/statmount.2: Document STATMOUNT_BY_FD

Andrei Vagin <[email protected]> Wed, 28 Jan 2026 11:38:47 -0800

Newsgroups	dev.linux.lists.criu,org.kernel.vger.linux-man
Message-ID	<CAEWA0a77rfpVv93RhyZvoaARtpRxG+Q_aFaDgNR6v=nFTpYzqw@mail.gmail.com>

On Wed, Jan 28, 2026 at 6:06 AM Bhavik Sachdev <[email protected]> wrote:
>
> STATMOUNT_BY_FD introduces the ability to get information about a mount
> using a fd on the mount. This functionality is currently in linux-next
> [1].
>
> Link [1]:
> <https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20260126&id=d5bc4e31f2a3f301b4214858bec834c67bb2be5c>
>
> Signed-off-by: Bhavik Sachdev <[email protected]>
> ---
>  man/man2/statmount.2 | 33 ++++++++++++++++++++++++++++++++-
>  1 file changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/man/man2/statmount.2 b/man/man2/statmount.2
> index 79ee752c1..d354f988e 100644
> --- a/man/man2/statmount.2
> +++ b/man/man2/statmount.2
> @@ -24,6 +24,7 @@ .SH SYNOPSIS
>  .EX
>  .B struct mnt_id_req {
>  .BR "    __u32  size;" "        /* sizeof(struct mnt_id_req) */"
> +.BR "    __u32  mnt_fd;" "      /* fd on the mount being queried */"

struct mnt_id_req {
        __u32 size;
        union {
                __u32 mnt_ns_fd;
                __u32 mnt_fd;
        };
        __u64 mnt_id;
        __u64 param;
        __u64 mnt_ns_id;
};

Could you please document mnt_ns_fd as well?

Thanks,
Andrei