Messages in this thread | | | Subject | Re: [PATCH 05/10] staging: erofs: add a full barrier in erofs_workgroup_unfreeze | From | Gao Xiang <> | Date | Thu, 22 Nov 2018 18:56:32 +0800 |
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Hi Greg,
On 2018/11/22 18:22, Greg Kroah-Hartman wrote: > Please document this memory barrier. It does not make much sense to > me...
Because we need to make the other observers noticing the latest values modified in this locking period before unfreezing the whole workgroup, one way is to use a memory barrier and the other way is to use ACQUIRE and RELEASE. we selected the first one.
Hmmm...ok, I will add a simple message to explain this, but I think that is plain enough for a lock...
Thanks, Gao Xiang
> > thanks, > > greg k-h
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