On 11/17/2016 06:25 AM, Jens Axboe wrote:
On 11/17/2016 05:50 AM, Christoph Hellwig wrote:
On Wed, Nov 16, 2016 at 09:43:57PM -0700, Jens Axboe wrote:
OK, I'm getting reasonably happy with it now:
http://git.kernel.dk/cgit/linux-block/log/?h=for-4.10/hch-dio
Sharing the FUA setting to avoid the manual flush between the two, and
removing the remnants of SYNC support from __blkdev_direct_IO().
I'll fire off some overnight testing now and leave it for the day.
This looks reasonable, a couple questions and comments:
- why the 8 * BIO_MAX_PAGES in the call to iov_iter_npages,
that probably needs a comment
Looks like I forgot to push out the latest changes, that is gone. We're
just using + 1 now to see if we should use the multibio function or not.
Just to clarify, the correct tip is:
commit 18eb8e94477813c190a2dfcd790c6707ab168377
Author: Jens Axboe <axboe@xxxxxx>
Date: Wed Nov 16 23:20:41 2016 -0700
block: save 8 bytes of space in struct blkdev_dio
That's what I ran in my overnight testing, and it looks fine from my
end.
--
Jens Axboe
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