From: Luca Boccassi <luca.boccassi@gmail.com>
To: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: kexec@lists.infradead.org, linux-mm@kvack.org, graf@amazon.com,
rppt@kernel.org, pratyush@kernel.org, brauner@kernel.org
Subject: Re: [PATCH v2] liveupdate: add LUO_SESSION_MAGIC magic inode type
Date: Fri, 17 Apr 2026 21:41:06 +0100 [thread overview]
Message-ID: <CAMw=ZnRpQQqq-ZoUmPKqs8=XBpZcQjFsrivmMXQsouR33ZNr8Q@mail.gmail.com> (raw)
In-Reply-To: <3rtwn7lkj5icexyammer5limslchbkm4xdgynp5llbt3wwybnp@ikjv5si2xodg>
On Fri, 17 Apr 2026 at 21:34, Pasha Tatashin <pasha.tatashin@soleen.com> wrote:
>
> On 04-17 10:44, luca.boccassi@gmail.com wrote:
> > From: Luca Boccassi <luca.boccassi@gmail.com>
> >
> > In userspace when managing LUO sessions we want to be able to identify
> > a FD as a LUO session, in order to be able to do the special handling
> > that they require in order to function as intended on kexec.
> >
> > Currently this requires scraping procfs and doing string matching on
> > the prefix of the dname, which is not an ideal interface.
> >
> > Add a singleton inode type with a magic value, so that we can
> > programmatically identify a fd as a LUO session via fstat().
>
> Hi Luca,
>
> The patch looks good to me, but please add a self-test to
> selftests/liveupdate/liveupdate.c to verify that the fstat interface works
> as expected.
Sure thing, added and sent v3
prev parent reply other threads:[~2026-04-17 20:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-17 9:44 luca.boccassi
2026-04-17 20:34 ` Pasha Tatashin
2026-04-17 20:41 ` Luca Boccassi [this message]
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