Re: CephFS and page cache

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On Wed, Oct 28, 2015 at 8:38 PM, Yan, Zheng <ukernel@xxxxxxxxx> wrote:
> On Thu, Oct 29, 2015 at 1:10 AM, Burkhard Linke
>> I tried to dig into the ceph-fuse code, but I was unable to find the
>> fragment that is responsible for flushing the data from the page cache.
>>
>
> fuse kernel code invalidates page cache on opening file. you can
> disable this behaviour by setting ""fuse use invalidate cb"  config
> option to true.

Zheng, do you know any reason we shouldn't make that the default value
now? There was a loopback deadlock (which is why it's disabled by
default) but I don't remember the details offhand well enough to know
if your recent work in those interfaces has fixed it. Or Sage?
-Greg
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