[Ocfs2-devel] A deadlock when system do not has sufficient memory

Sunil Mushran sunil.mushran at gmail.com
Sun Aug 24 22:45:50 PDT 2014


Please could you expand on that.
On Aug 24, 2014 10:42 PM, "Joseph Qi" <joseph.qi at huawei.com> wrote:

> On 2014/8/25 13:00, Sunil Mushran wrote:
> > Functions in dlmdomain.c are only triggered during mount. So they cannot
> trigger the deadlock as described above in this thread. I would leave them
> as is.
> >
> It is possible if mounts multiple volumes on each node.
>
> > On Aug 24, 2014 7:06 PM, "Xue jiufei" <xuejiufei at huawei.com <mailto:
> xuejiufei at huawei.com>> wrote:
> >
> >     Hi Sunil,
> >     On 2014/8/23 1:08, Sunil Mushran wrote:
> >     > Allocs made via GFP_NOFS, by definition, should not trigger any
> reclaim from the fs.
> >     > So this situation should never arise. That's why all allocs in the
> dlm have NOFS.
> >     >
> >     Thanks for your reply. I haven't noticed that before. So I think
> >     dlm_query_region_handler() should also use GFP_NOFS instead of
> GFP_KERNEL,
> >     right?
> >
> >     Thanks.
> >     Xuejiufei
> >     >
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> >
> >
> >
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>
>
>
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