code).
Signed-off-by: Andrea Arcangeli [EMAIL PROTECTED]
Thanks Andrea, this looks much saner!
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Jens Axboe
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On Fri, Sep 21 2007, Rusty Russell wrote:
On Thu, 2007-09-20 at 15:05 +0200, Jens Axboe wrote:
On Thu, Sep 20 2007, Rusty Russell wrote:
+static void end_dequeued_request(struct request *req,
+ struct request_queue *q, int uptodate)
+{
+ /* And so
On Fri, Sep 21 2007, Rusty Russell wrote:
On Thu, 2007-09-20 at 14:27 +0200, Jens Axboe wrote:
On Thu, Sep 20 2007, Rusty Russell wrote:
The block driver uses scatter-gather lists with sg[0] being the
request information (struct virtio_blk_outhdr) with the type, sector
and inbuf id
(struct request *, int);
extern void end_queued_request(struct request *, int);
+extern void end_dequeued_request(struct request *, int);
extern void blk_complete_request(struct request *);
/*
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Jens Axboe
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On Mon, Jun 11 2007, Rusty Russell wrote:
On Mon, 2007-06-11 at 08:41 +0200, Jens Axboe wrote:
On Sun, Jun 10 2007, Rusty Russell wrote:
On Sun, 2007-06-10 at 11:16 +0300, Avi Kivity wrote:
Rusty Russell wrote:
Lguest doesn't have a framebuffer, so maybe this is a good thing
On Tue, Jun 12 2007, Rusty Russell wrote:
On Mon, 2007-06-11 at 09:33 +0200, Jens Axboe wrote:
On Mon, Jun 11 2007, Rusty Russell wrote:
So the problem is that I'd like to handle all of them, but I'm not clear
what requests my device can get. I can't see a source of any other type
On Mon, Jun 04 2007, Carsten Otte wrote:
Jens Axboe wrote:
On Fri, Jun 01 2007, Carsten Otte wrote:
With regard to compute power needed, almost none. The penalty is
latency, not overhead: A small request may sit on the request queue to
wait for other work to arrive until the queue gets
On Mon, Jun 04 2007, Rusty Russell wrote:
On Mon, 2007-06-04 at 15:43 +0200, Jens Axboe wrote:
On Mon, Jun 04 2007, Carsten Otte wrote:
Jens Axboe wrote:
On Fri, Jun 01 2007, Carsten Otte wrote:
With regard to compute power needed, almost none. The penalty is
latency, not overhead
On Mon, Jun 04 2007, Carsten Otte wrote:
Jens Axboe wrote:
Most people should not fiddle with it, the defaults are there for good
reason. I can provide a blk_queue_unplug_thresholds(q, depth, delay)
helper that you could use for the virtualized drivers, perhaps that
would be better
another one. Performance was a nightmare, so
we discontinued pursuing that idea.
I'd greatly prefer maintaing a request_fn interface for this. The
make_request_fn/request_fn call ratio is at least 1, and typically a lot
larger (4kb blocks, 128kb request not uncommon - 32).
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Jens Axboe
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