Re: [PATCH v15 3/9] fuse: implement ioctls to manage backing files

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On Wed, 28 Feb 2024 at 15:32, Jens Axboe <axboe@xxxxxxxxx> wrote:
> On 2/28/24 4:28 AM, Amir Goldstein wrote:

> > Are fixed files visible to lsof?
> lsof won't show them, but you can read the fdinfo of the io_uring fd to
> see them. Would probably be possible to make lsof find and show them
> too, but haven't looked into that.

Okay, that approach could be used with fuse as well.  This isn't
perfect, but we can think improving the interface for both.

> > Do they get accounted in rlimit? of which user?
> The fixed file table is limited in size by RLIMIT_NOFILE by the user
> that registers it.

That's different for fuse as the server wouldn't register the whole
file table in one go.  The number of used slots could be limited by


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