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SubjectRe: [RFC PATCH v2 6/6] USB: forbid memory allocation with I/O during bus reset
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On Mon, Oct 22, 2012 at 10:37 PM, Alan Stern <stern@rowland.harvard.edu> wrote:
> On Mon, 22 Oct 2012, Ming Lei wrote:

>>
>> + /*
>> + * Don't allocate memory with GFP_KERNEL in current
>> + * context to avoid possible deadlock if usb mass
>> + * storage interface or usbnet interface(iSCSI case)
>> + * is included in current configuration. The easiest
>> + * approach is to do it for all devices.
>> + */
>> + memalloc_noio_save(noio_flag);
>
> Why not check dev->power.memalloc_noio_resume here too?

Yes, we can use the flag here too even though it is introduced
for rutime_resume case.

Thanks,
--
Ming Lei


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