On Sat, Dec 07, 2019 at 08:19:18AM -0700, Jens Axboe wrote:
On 12/7/19 5:01 AM, Greg KH wrote:
On Wed, Dec 04, 2019 at 08:53:43AM -0700, Jens Axboe wrote:
Hi,
We have an issue with drains not working due to missing copy of some state, it's affecting 5.2/5.3/5.4. I'm attaching the patch for 5.4, however the patch should apply to 5.2 and 5.3 as well by just removing the last hunk. The last hunk is touching the linked code, which was introduced with 5.4.
Does this match up with a patch in Linus's tree anywhere? Why is this a stable-only thing?
Because it was fixed as part of a cleanup series in mainline, before anyone realized we had this issue. That removed the separate states of ->index vs ->submit.sqe. That series is not something I was comfortable putting into stable, hence the much simpler addition. Here's the patch in the series that fixes the same issue:
commit cf6fd4bd559ee61a4454b161863c8de6f30f8dca Author: Pavel Begunkov asml.silence@gmail.com Date: Mon Nov 25 23:14:39 2019 +0300
io_uring: inline struct sqe_submit
Thanks for the info, now queued up!
greg k-h