What we really nee to do is to always set the NOWAIT flag (we have a
reserved tag for connect anyway), and thus never trigger the code
deep down in bt_get that might switch to a different hctx.
Below is the version that I've tested together with the NVMe change
to use the NOWAIT flag:
---
>From 2
On Tue, Jun 07, 2016 at 10:49:22PM -0600, Jens Axboe wrote:
> Why are we duplicating this code here? If NOWAIT isn't set, then we'll
> always return a request. bt_get() will run the queue for us, if it needs
> to. blk_mq_alloc_request() does this too, and I'm guessing that code was
> just copied. I
On Tue, 2016-06-07 at 22:49 -0600, Jens Axboe wrote:
> On 06/06/2016 03:21 PM, Christoph Hellwig wrote:
> > From: Ming Lin
> >
> > For some protocols like NVMe over Fabrics we need to be able to
> > send
> > initialization commands to a specific queue.
> >
> > Based on an earlier patch from Chri
On 06/06/2016 03:21 PM, Christoph Hellwig wrote:
From: Ming Lin
For some protocols like NVMe over Fabrics we need to be able to send
initialization commands to a specific queue.
Based on an earlier patch from Christoph Hellwig .
Signed-off-by: Ming Lin
Signed-off-by: Christoph Hellwig
---
On Tue, Jun 7, 2016 at 8:27 AM, Ming Lin wrote:
> On Tue, Jun 7, 2016 at 7:57 AM, Keith Busch wrote:
>> On Mon, Jun 06, 2016 at 11:21:52PM +0200, Christoph Hellwig wrote:
>>> +struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int rw,
>>> + unsigned int flags, unsigned
On Tue, Jun 7, 2016 at 7:57 AM, Keith Busch wrote:
> On Mon, Jun 06, 2016 at 11:21:52PM +0200, Christoph Hellwig wrote:
>> +struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int rw,
>> + unsigned int flags, unsigned int hctx_idx)
>> +{
>> + struct blk_mq_hw_ctx *hc
On Mon, Jun 06, 2016 at 11:21:52PM +0200, Christoph Hellwig wrote:
> +struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int rw,
> + unsigned int flags, unsigned int hctx_idx)
> +{
> + struct blk_mq_hw_ctx *hctx;
> + struct blk_mq_ctx *ctx;
> + struct request
From: Ming Lin
For some protocols like NVMe over Fabrics we need to be able to send
initialization commands to a specific queue.
Based on an earlier patch from Christoph Hellwig .
Signed-off-by: Ming Lin
Signed-off-by: Christoph Hellwig
---
block/blk-mq.c | 33 +++
8 matches
Mail list logo
