Re: [PATCH 1/3] selftests: zswap: add zswap selftest file to zswap maintainer entry

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On Tue, Jan 30, 2024 at 10:37:15AM -0800, Nhat Pham wrote:
> On Mon, Jan 29, 2024 at 5:02 PM Yosry Ahmed <yosryahmed@xxxxxxxxxx> wrote:
> >
> > On Mon, Jan 29, 2024 at 02:45:40PM -0800, Nhat Pham wrote:
> > > Make it easier for contributors to find the zswap maintainers when they
> > > update the zswap tests.
> > >
> > > Signed-off-by: Nhat Pham <nphamcs@xxxxxxxxx>
> >
> > I guess I had to check the zswap tests at some point :)
> We sorely need more zswap tests :)
> I'm one of the offenders of adding new features without including
> tests, so no judging anyone of course, and admittedly zswap is quite
> intertwined with other parts of MM, so it's kinda hard to write
> unit-ish tests for zswap only. I often had to resort to scripting
> stress tests to iron out bugs.
> But there are still tests that we can write to verify public API
> (cgroup's zswap options come to mind), simple tests that cover crucial
> code paths, etc. that we should probably add in. At the very least
> this can be a quick/sanity check for developing and backporting
> patches into the production system.

Agreed. I am yet to take a close look at the existing tests tbh, but I
took a quick look before and there is room for improvement (and little
bandwidth to act on it).

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