From: David Matlack <dmatlack@google.com>
To: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Pratyush Yadav <pratyush@kernel.org>,
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Subject: Re: [PATCH v4 14/30] liveupdate: luo_session: Add ioctls for file preservation and state management
Date: Wed, 29 Oct 2025 14:13:20 -0700 [thread overview]
Message-ID: <CALzav=frK48c1=nsbVJ4EvqqOqr33pUArP4G17su0hxOYveALw@mail.gmail.com> (raw)
In-Reply-To: <CA+CK2bBVSX26TKwgLkXCDop5u3e9McH3sQMascT47ZwwrwraOw@mail.gmail.com>
On Wed, Oct 29, 2025 at 1:13 PM Pasha Tatashin
<pasha.tatashin@soleen.com> wrote:
> Simplified uAPI Proposal
> The simplest uAPI would look like this:
> IOCTLs on /dev/liveupdate (to create and retrieve session FDs):
> LIVEUPDATE_IOCTL_CREATE_SESSION
> LIVEUPDATE_IOCTL_RETRIEVE_SESSION
> - If everything succeeds, the session becomes an empty "outgoing"
> session. It can then be closed and discarded or reused for the next
> live update by preserving new FDs into it.
I think it would be useful to cleanly separate incoming and outgoing
sessions. The only way to get an outgoing session is with
LIVEUPDATE_IOCTL_CREATE_SESSION. Incoming sessions can be retrieved
with LIVEUPDATE_IOCTL_RETRIEVE_SESSION.
It is fine and expected for incoming and outgoing sessions to have the
same name. But they are different sessions. This way, the kernel can
easily keep track of incoming and outgoing sessions separately, and
there is not need to "transition" and session from incoming to
outgoing.
next prev parent reply other threads:[~2025-10-29 21:13 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-29 1:02 [PATCH v4 00/30] Live Update Orchestrator Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 01/30] kho: allow to drive kho from within kernel Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 02/30] kho: make debugfs interface optional Pasha Tatashin
2025-10-06 16:30 ` Pratyush Yadav
2025-10-06 18:02 ` Pasha Tatashin
2025-10-06 16:55 ` Pratyush Yadav
2025-10-06 17:23 ` Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 03/30] kho: drop notifiers Pasha Tatashin
2025-10-06 14:30 ` Pratyush Yadav
2025-10-06 16:17 ` Pasha Tatashin
2025-10-06 16:38 ` Pratyush Yadav
2025-10-06 17:01 ` Pratyush Yadav
2025-10-06 17:21 ` Pasha Tatashin
2025-10-07 12:09 ` Pratyush Yadav
2025-10-07 13:16 ` Pasha Tatashin
2025-10-07 13:30 ` Pratyush Yadav
2025-09-29 1:02 ` [PATCH v4 04/30] kho: add interfaces to unpreserve folios and page ranes Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 05/30] kho: don't unpreserve memory during abort Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 06/30] liveupdate: kho: move to kernel/liveupdate Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 07/30] liveupdate: luo_core: luo_ioctl: Live Update Orchestrator Pasha Tatashin
2025-09-29 1:02 ` [PATCH v4 08/30] liveupdate: luo_core: integrate with KHO Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 09/30] liveupdate: luo_subsystems: add subsystem registration Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 10/30] liveupdate: luo_subsystems: implement subsystem callbacks Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 11/30] liveupdate: luo_session: Add sessions support Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 12/30] liveupdate: luo_ioctl: add user interface Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 13/30] liveupdate: luo_file: implement file systems callbacks Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 14/30] liveupdate: luo_session: Add ioctls for file preservation and state management Pasha Tatashin
2025-10-29 19:07 ` Pratyush Yadav
2025-10-29 20:13 ` Pasha Tatashin
2025-10-29 20:43 ` David Matlack
2025-10-29 20:57 ` Pasha Tatashin
2025-10-29 21:13 ` David Matlack [this message]
2025-10-29 21:17 ` Pasha Tatashin
2025-10-29 22:00 ` Samiullah Khawaja
2025-10-30 14:45 ` Pasha Tatashin
2025-10-29 20:37 ` Pratyush Yadav
2025-10-29 20:58 ` Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 15/30] reboot: call liveupdate_reboot() before kexec Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 16/30] kho: move kho debugfs directory to liveupdate Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 17/30] liveupdate: add selftests for subsystems un/registration Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 18/30] selftests/liveupdate: add subsystem/state tests Pasha Tatashin
2025-10-03 23:17 ` Vipin Sharma
2025-10-04 2:08 ` Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 19/30] docs: add luo documentation Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 20/30] MAINTAINERS: add liveupdate entry Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 21/30] mm: shmem: use SHMEM_F_* flags instead of VM_* flags Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 22/30] mm: shmem: allow freezing inode mapping Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 23/30] mm: shmem: export some functions to internal.h Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 24/30] luo: allow preserving memfd Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 25/30] docs: add documentation for memfd preservation via LUO Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 26/30] selftests/liveupdate: Add multi-kexec session lifecycle test Pasha Tatashin
2025-10-03 22:51 ` Vipin Sharma
2025-10-04 2:07 ` Pasha Tatashin
2025-10-04 2:37 ` Pasha Tatashin
2025-10-09 22:57 ` Vipin Sharma
2025-09-29 1:03 ` [PATCH v4 27/30] selftests/liveupdate: Add multi-file and unreclaimed file test Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 28/30] selftests/liveupdate: Add multi-session workflow and state interaction test Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 29/30] selftests/liveupdate: Add test for unreclaimed resource cleanup Pasha Tatashin
2025-09-29 1:03 ` [PATCH v4 30/30] selftests/liveupdate: Add tests for per-session state and cancel cycles Pasha Tatashin
2025-10-07 17:10 ` [PATCH v4 00/30] Live Update Orchestrator Pasha Tatashin
2025-10-07 17:50 ` Jason Gunthorpe
2025-10-08 3:18 ` Pasha Tatashin
2025-10-08 7:03 ` Samiullah Khawaja
2025-10-08 16:40 ` Pasha Tatashin
2025-10-08 19:35 ` Jason Gunthorpe
2025-10-08 20:26 ` Pasha Tatashin
2025-10-09 14:48 ` Jason Gunthorpe
2025-10-09 15:01 ` Pasha Tatashin
2025-10-09 15:03 ` Pasha Tatashin
2025-10-09 16:46 ` Samiullah Khawaja
2025-10-09 17:39 ` Jason Gunthorpe
2025-10-09 18:37 ` Pasha Tatashin
2025-10-10 14:35 ` Jason Gunthorpe
2025-10-09 21:58 ` Samiullah Khawaja
2025-10-09 22:42 ` Pasha Tatashin
2025-10-10 14:42 ` Jason Gunthorpe
2025-10-10 14:58 ` Pasha Tatashin
2025-10-10 15:02 ` Jason Gunthorpe
2025-10-09 22:57 ` Pratyush Yadav
2025-10-09 23:50 ` Pasha Tatashin
2025-10-10 15:01 ` Jason Gunthorpe
2025-10-14 13:29 ` Pratyush Yadav
2025-10-20 14:29 ` Jason Gunthorpe
2025-10-27 11:37 ` Pratyush Yadav
2025-10-13 15:23 ` Pratyush Yadav
2025-10-10 12:45 ` Pasha Tatashin
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