Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush lru pvecs on compound page arrival" from stable tree? Was:[osstest-admin@xxxxxxxxxxxxxx: [Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-qemut-rhel6hvm-amd]

From: Ian Jackson
Date: Thu Jul 21 2016 - 08:46:00 EST

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In reply to: Sebastian Gottschall: "Re: Revert c5ad33184354260be6d05de57e46a5498692f6d6 "mm/swap.c: flush lru pvecs on compound page arrival" from stable tree? Was:[osstest-admin@xxxxxxxxxxxxxx: [Xen-devel] [linux-4.1 bisection] complete test-amd64-i386-qemut-rhel6hvm-amd]"
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I see that linux-4.1.y is still at 5880876e9469 which has the serious
bug introduced by the backport c5ad33184354 "mm/swap.c: flush lru
pvecs on compound page arrival".

The analogous problem is also still affecting at least linux-3.18.y.

Is there some problem with reverting this patch in the stable
branches ?

Thanks,
Ian.