Messages in this thread | | | Date | Mon, 29 Aug 2011 22:15:07 +0800 | Subject | Re: blkdev_issue_discard() hangs forever if the underlying storage device is removed | From | Lin Ming <> |
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On Mon, Aug 29, 2011 at 7:56 PM, Lukas Czerner <lczerner@redhat.com> wrote: > > Regarding the atomic operations I do not think that implicit memory > barriers are needed here as atomic_dec_and_test() implies memory
Which implicit memory barrier you are talking about?
> barrier, atomic_set() is out of the scope of our interest (and it would > not cause the problem like that anyway) and reordering atomic_inc() > would not cause problem like this as well.
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