Re: [GIT PULL] Filesystem Information

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On Mon, Aug 3, 2020 at 5:50 PM David Howells <dhowells@xxxxxxxxxx> wrote:
>
>
> Hi Linus,
>
> Here's a set of patches that adds a system call, fsinfo(), that allows
> information about the VFS, mount topology, superblock and files to be
> retrieved.
>
> The patchset is based on top of the mount notifications patchset so that
> the mount notification mechanism can be hooked to provide event counters
> that can be retrieved with fsinfo(), thereby making it a lot faster to work
> out which mounts have changed.
>
> Note that there was a last minute change requested by Miklós: the event
> counter bits got moved from the mount notification patchset to this one.
> The counters got made atomic_long_t inside the kernel and __u64 in the
> UAPI.  The aggregate changes can be assessed by comparing pre-change tag,
> fsinfo-core-20200724 to the requested pull tag.
>
> Karel Zak has created preliminary patches that add support to libmount[*]
> and Ian Kent has started working on making systemd use these and mount
> notifications[**].

So why are you asking to pull at this stage?

Has anyone done a review of the patchset?

I think it's obvious that this API needs more work.  The integration
work done by Ian is a good direction, but it's not quite the full
validation and review that a complex new API needs.

At least that's my opinion.

Thanks,
Miklos




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