Re: [PATCH] selftests/damon: check correct path in ensure_file() not_exist case

[SJ Park <sj@kernel.org>]

+ Andrew

On Mon,  6 Jul 2026 21:43:04 +0800 wang wei <a929244872@163.com> wrote:

> In the ensure_file() function, the "not_exist" code path checks
> whether $dir exists as a regular file.  However, the intent is to
> verify that the target file ($file) does not exist, not the $dir.
> Testing $dir makes the existence check effectively useless --
> it tests the wrong path and thus never catches the case
> where the file is unexpectedly present.
> 
> Replace $dir with $file so the not_exist verification targets the
> correct path.

Nice catch, thank you!

> 
> Signed-off-by: wang wei <a929244872@163.com>

Reviewed-by: SJ Park <sj@kernel.org>

This patch is applied to damon/next [1] tree.  If this patch is not added to
mm.git in short term (~1 week?), I will ask mm.git maintainer (Andrew Morton)
to pick this.  So, no action from your side is needed for now.  If it seems I
also forgot doing that or you cannot wait for my action, please feel free to
directly ask that to Andrew.

[1] https://origin.kernel.org/doc/html/latest/mm/damon/maintainer-profile.html#scm-trees


Thanks,
SJ

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