Re: + liveupdate-prevent-double-management-of-files.patch added to mm-new branch

[SeongJae Park <sj@kernel.org>]

Hello Andrew,

On Tue, 24 Mar 2026 08:03:31 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:

> 
> The patch titled
>      Subject: liveupdate: prevent double management of files
> has been added to the -mm mm-new branch.  Its filename is
>      liveupdate-prevent-double-management-of-files.patch
[...]
> ------------------------------------------------------
> From: Pasha Tatashin <pasha.tatashin@soleen.com>
> Subject: liveupdate: prevent double management of files
> Date: Mon, 23 Mar 2026 20:31:44 +0000
> 
> Patch series "liveupdate: prevent double preservation", v2.
> 
> Currently, LUO does not prevent the same file from being preserved twice
> across different active sessions.
> 
> Because LUO preserves files of absolutely different types: memfd, and
> upcoming vfiofd [1], iommufd [2], guestmefd (and possible kvmfd/cpufd). 
> There is no common private data or guarantee on how to prevent that the
> same file is not preserved twice beside using inode or some slower and
> expensive method like hashtables.
> 
> 
> 
> Currently, LUO does not prevent the same file from being managed twice
> across different active sessions.

Seems the usual "This patch (of X):" line above this paragraph is mistakenly
not added?

No issue for me, but I just wanted to inform you for a case that you care about
that.


Thanks,
SJ

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