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    SubjectRe: [PATCH cgroup/for-4.3-fixes] cgroup, writeback: don't enable cgroup writeback on traditional hierarchies
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    On Thu, 2015-09-24 at 16:45 -0400, Tejun Heo wrote:
    > Hello, Artem.
    >
    > On Thu, Sep 24, 2015 at 11:09:46AM +0300, Artem Bityutskiy wrote:
    > > On Wed, 2015-09-23 at 17:07 -0400, Tejun Heo wrote:
    > > > So, this should make the regression go away. It doesn't fix the
    > > > underlying bugs but they shouldn't get triggered by people not
    > > > experimenting with cgroup.
    > >
    > > this hits the nail on the head and makes the problem go away.
    >
    > Yeah but there still is an underlying problem here. I've been going
    > through the sync path today but can't trigger or spot anything wrong.
    > Can you please apply the patch at the end of this mail, trigger the
    > failure and report the kernel log?
    >
    > Thanks a lot.

    Does not compile with multiple errors like

    linux/fs/fs-writeback.c:799:10: error: ‘struct bdi_writeback’ has no member named ‘last_comp_gen’
    bdi->wb.last_comp_gen = bdi->wb.comp_gen;
    ^





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