* Re: [PATCH 0/2] liveupdate: FLB refcounting improvements
[not found] <20260423174032.3140399-1-dmatlack@google.com>
@ 2026-04-23 18:13 ` Pasha Tatashin
2026-04-23 18:40 ` David Matlack
0 siblings, 1 reply; 2+ messages in thread
From: Pasha Tatashin @ 2026-04-23 18:13 UTC (permalink / raw)
To: David Matlack
Cc: linux-kernel, Andrew Morton, Mike Rapoport, Pasha Tatashin,
Pratyush Yadav, Samiullah Khawaja, kexec
Please include kexec@lists.infradead.org so the patches are tested by
Sashiko, and added to patchwork that we are using to maintaine live
update work.
Pasha
On 04-23 17:40, David Matlack wrote:
> This series can be found on GitHub:
>
> https://github.com/dmatlack/linux/tree/liveupdate/flb/refcount/v1
>
> This series has 2 patches to improve how FLB refcounting works in
> preparation for using FLB in the PCI core. The first patch converts the
> existing refcounting to use refcount_t, and the second patch allows
> users of the incoming FLB to hold references to the FLB to avoid it
> getting freed.
>
> Users of the outgoing FLB don't need to take an extra reference yet
> since it's always done in the context of a preserve/unpreserve file
> callback, which are already synchronized with outgoing FLB creation
> and destruction.
>
> This series has been tested against the existing Live Update selftests
> (liveupdate, luo_kexec_simple, and luo_multi_session) on an Intel EMR
> host.
>
>
> David Matlack (2):
> liveupdate: Use refcount_t for FLB reference counts
> liveupdate: Reference count incoming FLB data
>
> include/linux/liveupdate.h | 9 ++++++-
> kernel/liveupdate/luo_flb.c | 52 ++++++++++++++++++-------------------
> lib/tests/liveupdate.c | 3 +++
> 3 files changed, 37 insertions(+), 27 deletions(-)
>
>
> base-commit: 2a4c0c11c0193889446cdb6f1540cc2b9aff97dd
> --
> 2.54.0.rc2.544.gc7ae2d5bb8-goog
>
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