Re: Question about loop device DIO/AIO and FLUSH
flat view
From: Christoph Hellwig <hch@lst.de>
Date: 2016-07-01 05:04:58
Also in:
linux-fsdevel
On Fri, Jul 01, 2016 at 05:00:18AM +0000, Damien Le Moal wrote:
Did you mean "...I/O requests that have already been fully submitted" ?
No.
Flushing I/Os that have already completed does not seem to make much sense. Or I am also missing something...
With a volatile write cache this makes a lot of sense. And fsync flushes the volatile fs metadata to disk, while flush flushes the volatile disk write cache.