Re: [PATCH v3 3/6] uas: make work list per-device

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Di, 2013-09-17 at 13:30 -0700, Christoph Hellwig wrote:
> On Fri, Sep 13, 2013 at 01:27:12PM +0200, Gerd Hoffmann wrote:
> > Simplifies locking, we'll protect the list with the device spin lock.
> > Also plugs races which can happen when two devices operate on the
> > global list.
> > 
> > While being at it rename the list head from "list" to "work", preparing
> > for the addition of a second list.
> 
> Why do you even the list?

The list was already there when I took over maintainance ...

> What would a ordered per-device workqueue not
> provide?

Had no reason to look into replacing the list with something else so
far.  Why do you suggest using a workqueue instead?

Note that the list is not used in a typical request workflow.  Only in
case queuing an usb urb failed the request is linked into the list and
the worker will try to submit the usb urb again.

cheers,
  Gerd


--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux