Christoph Hellwig wrote:
If the backend implementation of T_FLUSH is fsync, I would think that
this would result in rather poor performance for O_DIRECT operations in
the guest.
Right now it's fsync. By the time I'll submit the backend change it
will still be fsync, but at least called from the posix-aio-compat
thread pool.
I think if we have cache=writeback we should ignore this. The user is
saying, I don't care about data loss, make the thing go fast.
For cache=none and cache=writethrough we don't really need fsync, but we
do need to flush the inflight commands.
--
error compiling committee.c: too many arguments to function
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