On Wed, Mar 29 2017, Ming Lei wrote:

On Mon, Mar 27, 2017 at 08:06:54PM +0800, Ming Lei wrote:

quoted

Hi,

The 1st  patch add comments on blk-mq races with timeout handler.

The other 3 patches improves handling for dying queue:
	- the 2nd one adds one barrier in blk_queue_enter() for
	avoiding hanging caused by out-of-order
	- the 3rd and 4th patches block new I/O entering queue
	after queue is set as dying

V3:
	- tweak comments as suggested by Bart Van Assche

Hi Jens,

This patchset has been posted several times without real code change
for a while, could you consider it for v4.12?

We can queue it up now. I do agree that patch 2+4 should have been
folded into one, but that's not a huge deal.

-- 
Jens Axboe