Re: [PATCH v2 4/6] fs: report per-mount io stats

Miklos Szeredi <[email protected]> Mon, 28 Feb 2022 16:06:38 +0100

Newsgroups	dev.linux.lists.containers,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-unionfs
Message-ID	<CAJfpegvZefGp9NChm_69Km0FgpxwUs+og-uc2mpMAbH6mZ2azQ@mail.gmail.com>

On Mon, 28 Feb 2022 at 12:39, Amir Goldstein <[email protected]> wrote:
>
> Show optional collected per-mount io stats in /proc/<pid>/mountstats
> for filesystems that do not implement their own show_stats() method
> and opted-in to generic per-mount stats with FS_MOUNT_STATS flag.

This would allow some filesystems to report per-mount I/O stats, while
leaving CIFS and NFS reporting a different set of per-sb stats.  This
doesn't sound very clean.

There was an effort to create saner and more efficient interfaces for
per-mount info.  IMO this should be part of that effort instead of
overloading the old interface.

Thanks,
Miklos