Re: [PATCH -mm] swsusp: userland interface (rev 2)

[Andrew Morton]

"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:
>
> IMHO after it gets into mainline every next version of the interface should
> be backwards compatible with the previous one.

That's insufficient.  Every new version of the userspace tools also needs
to be back-compatible with (and tested against!) older kernels.

Otherwise, people who upgrade both their kernel and userspace will find
that their old kernels don't work right, so they have to downgrade their
userspace tools too.

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