linux-kernel - Re: [PATCH] selftests/liveupdate: add end to end test infrastructure and scripts

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Message-ID: <aYI9bUEodBEU6Zq3@kernel.org>
Date: Tue, 3 Feb 2026 20:24:45 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Jordan Richards <jordanrichards@...gle.com>
Cc: dmatlack@...gle.com, jasonmiu@...gle.com, linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org, linux-mm@...ck.org,
	pasha.tatashin@...een.com, pratyush@...nel.org, shuah@...nel.org
Subject: Re: [PATCH] selftests/liveupdate: add end to end test infrastructure
 and scripts

On Mon, Feb 02, 2026 at 09:48:59PM +0000, Jordan Richards wrote:
> Hi Mike,
> 
> Thanks for the feedback.
> 
> >> +int sys_ftruncate(int fd, off_t length)
> >> +{
> >> +     return my_syscall2(__NR_ftruncate, fd, length);
> >> +}
> >> +
> >> +int ftruncate(int fd, off_t length)
> >> +{
> >> +     return __sysret(sys_ftruncate(fd, length));
> >> +}
> >
> > These should be added to nolibc I suppose.
> 
> I notice that nolibc has its own tree. If I patch nolibc/sys.h,
> will those changes make their way there? Or should I avoid modifying
> nolibc/sys.h and keep this local copy for now, to be removed if/when
> ftruncate is added to nolibc?

I think you can make this a set of two patches: the first that adds
ftruncate to nolibc and the second with LUO test.

Then with an Ack from nolibc maintainer both can be merged via Andrew's tree.

-- 
Sincerely yours,
Mike.