On Thu, Oct 29, 2015 at 2:21 PM, Gregory Farnum <gfar...@redhat.com> wrote:
> On Wed, Oct 28, 2015 at 8:38 PM, Yan, Zheng <uker...@gmail.com> 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

there is no loopback deadlock now, because we use a separate thread to
invalidate kernel page cache. I think we can enable this option
safely.

Regards
Yan, Zheng
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