RE: [PATCH v4 00/11] usbip: features to USB over WebSocket

2015-07-16 Thread fx IWATA NOBUO 
Dear Valentina,

I'm preparing 2 sets of patches.

1) cleanups, fixings and workarounds to WebSocket patch set and 
previous code.
   - no critical modification included.

2) number of ports extension in vhci side
   - I think it was talked in 'usbredir' e-mail thread.

I wrote these on WebSocket patch set.

Will the WebSocket patch set be merged?

Could I send new sets above as patches to WebSocket patch set?

Please, give some advice.

Thank you,

n.iwata
//

 -Original Message-
 From: Valentina Manea [mailto:valentina.mane...@gmail.com]
 Sent: Friday, June 05, 2015 10:40 PM
 To: fx IWATA NOBUO
 Cc: Shuah Khan; Greg KH; linux-usb@vger.kernel.org; fx MICHIMURA TADAO
 Subject: Re: [PATCH v4 00/11] usbip: features to USB over WebSocket

--- snip ---

 Acked-by: Valentina Manea valentina.mane...@gmail.com
 mailto:valentina.mane...@gmail.com

Re: [PATCH v4 00/11] usbip: features to USB over WebSocket

2015-05-28 Thread Oliver Neukum 
On Thu, 2015-05-28 at 14:56 +0900, Nobuo Iwata wrote:
 Dear all,
 
 This series of patches introduces WebSocket to USB/IP. 

Hi,

how do you avoid deadlocking under memory pressure?
It seems to me that under these semantics you can no
longer guarantee GFP_NOIO if usb-storage or UAS are used,
because you have no control over memory allocations user
space makes.

Regards
Oliver


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RE: [PATCH v4 00/11] usbip: features to USB over WebSocket

2015-05-28 Thread fx IWATA NOBUO 
Hi,

 how do you avoid deadlocking under memory pressure?
 It seems to me that under these semantics you can no
 longer guarantee GFP_NOIO if usb-storage or UAS are used,
 because you have no control over memory allocations user
 space makes.

Sorry, I haven't cared the case.
I found GFP_NOIO allocation in usbip_common.c:usbip_recv().
It is used for kernel mode transfer in existing code before this series.
It is not used when switched to userspace transfer introduced by this 
series.

Outside this series, I will study the reason why GFP_NOIO is used.

Thank you,

n.iwata
//
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