Re: [PATCH 5.15] fuse: Fix race condition in writethrough path A race

Brian Foster
2025-10-14T16:17:47Z

On Tue, Oct 14, 2025 at 06:10:45PM +0200, Miklos Szeredi wrote:
> On Tue, 14 Oct 2025 at 15:57, Brian Foster <bfoster@redhat.com> wrote:
>
> > But TBH, if the writeback thing or something similarly simple works for
> > resolving the immediate bug, I wouldnt worry too much about it
> > until/unless there are userspace fs' explicitly looking for that sort of
> > behavior. Just my .02.
>
> Agreed.
>
> I just feel it unfortunate that this is default in libfuse and so many
> filesystems will have auto_inval_data enabled which don't even need
> it, and some mixed read-write workloads suffering badly as a
> consequence.
>

Maybe it didnt really need to be on by default? I don't recall caring
much about that (but again, long time ago) as long as the fs that wants
it can enable it.

Brian

> Thanks,
> Miklos
>