On 03/17/2017 10:57 AM, Ming Lei wrote:
> Before commit 780db2071a(blk-mq: decouble blk-mq freezing
> from generic bypassing), the dying flag is checked before
> entering queue, and Tejun converts the checking into .mq_freeze_depth,
> and assumes the counter is increased just after dying flag
> is
On Fri, Mar 17, 2017 at 11:26:26PM +, Bart Van Assche wrote:
> On Fri, 2017-03-17 at 17:57 +0800, Ming Lei wrote:
> > Given blk_set_queue_dying() is always called in remove path
> > of block device, and queue will be cleaned up later, we don't
> > need to worry about undoing the counter.
> >
>
On Fri, 2017-03-17 at 17:57 +0800, Ming Lei wrote:
> Given blk_set_queue_dying() is always called in remove path
> of block device, and queue will be cleaned up later, we don't
> need to worry about undoing the counter.
>
> diff --git a/block/blk-core.c b/block/blk-core.c
> index d772c221cc17..62d
On Sat, 2017-03-18 at 02:32 +0800, Ming Lei wrote:
> On Sat, Mar 18, 2017 at 1:32 AM, Bart Van Assche wrote:
> > + /*
> > +* Avoid that the updates of the queue flags and q_usage_counter
> > +* are reordered.
> > +*/
> > + smp_wmb();
>
> atomic_inc_return() in b
On Sat, Mar 18, 2017 at 1:32 AM, Bart Van Assche
wrote:
> On Fri, 2017-03-17 at 17:57 +0800, Ming Lei wrote:
>> Before commit 780db2071a(blk-mq: decouble blk-mq freezing
>> from generic bypassing), the dying flag is checked before
>> entering queue, and Tejun converts the checking into .mq_freeze_
On Fri, 2017-03-17 at 17:57 +0800, Ming Lei wrote:
> Before commit 780db2071a(blk-mq: decouble blk-mq freezing
> from generic bypassing), the dying flag is checked before
> entering queue, and Tejun converts the checking into .mq_freeze_depth,
> and assumes the counter is increased just after dying
6 matches
Mail list logo
