From: Pasha Tatashin <pasha.tatashin@soleen.com>
To: luca.boccassi@gmail.com
Cc: kexec@lists.infradead.org, linux-mm@kvack.org, graf@amazon.com,
rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org,
brauner@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 1/2] liveupdate: add LUO_SESSION_MAGIC magic inode type
Date: Fri, 17 Apr 2026 21:04:38 +0000 [thread overview]
Message-ID: <qwxxff3i65vsnzyaklovxp6ldc26ni6wnrfd2mne7oktdybqan@35hjg7obfrf5> (raw)
In-Reply-To: <20260417205810.1831923-1-luca.boccassi@gmail.com>
On 04-17 21:57, 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().
>
> Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
prev parent reply other threads:[~2026-04-17 21:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-17 20:57 luca.boccassi
2026-04-17 20:57 ` [PATCH v4 2/2] selftests/liveupdate: add test case for LUO_SESSION_MAGIC luca.boccassi
2026-04-17 21:06 ` Pasha Tatashin
2026-04-17 21:04 ` Pasha Tatashin [this message]
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