On 10/12/2010 06:16 PM, Anthony Liguori wrote:
It's fairly simple to add a sync to this path. It's probably worth
checking the prefill/postfill for zeros and avoiding the write/sync if
that's the case. That should optimize the common cases of allocating
new space within a file.
My intuition is that we can avoid the sync entirely but we'll need to
think about it further.
I don't think so. This isn't a guest initiated write so we can't shift
responsibility to the guest.
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