Re: [PATCH] fscrypt: allow filesystems to disable symlink target caching

[Alex Markuze]

I didn't want to conflate fscrypt patches with Ceph features; arguably
two distinct patchsets.

I will CC you folks when this is acked then.

On Thu, Oct 15, 2026 at 10:38 PM Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
>
> On Thu, Oct 15, 2026 at 09:52:11PM +0300, Alex Markuze wrote:
> > Hi Eric,
> >
> > This supports the concurrent CephFS subvolume quarantine series.
> > There’s no Fixes: tag since this isn't addressing an existing upstream
> > regression.
> >
> > The quarantine series adds checks to Ceph's ->get_link(). However, if
> > an encrypted symlink target was cached prior to quarantine, the VFS
> > bypasses that callback entirely when following or reading it. While
> > the target data is still valid, access now needs to be denied.
> >
> > This patch adds an opt-out for symlink caching and enables it for
> > Ceph, handling the encrypted-symlink case for the concurrent series
> > without affecting other filesystems.
> >
>
> That series wasn't sent to me.  Is it
> https://lore.kernel.org/r/cover.1792074165.git.amarkuze@xxxxxxxxxx/ ?
> It would make more sense to add this patch to that series so that they
> can be reviewed together.  I can potentially apply a prerequisite patch
> by itself, but we'd first need to know that the rest has been reviewed
> and will be accepted too, otherwise it will be unused code.
>
> - Eric
>