2.6.11.x, EXTRAVERSION and module compatibility

[Michael Tokarev]

As far as I can see, the "super-stable" kernel releases
should not affect module ABI in any way, that is, a module
compiled for 2.6.11 or 2.6.11.2 should work with 2.6.11.4
and vise versa.  Ofcourse I'm talking about modules which
are out of the main kernel tree.

But.  EXTRAVERSION gets changed with every 2.6.11.x release,
thus making out-of-tree modules incompatible just because
they contain different kernel version tag.

The question is obvious: Is this a correct/intended behaviour?
Maybe, just maybe, EXTRAVERSION should not be taken into
account when desciding if a given module compiled for a
given kernel?

Thanks.

/mjt
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