Re: [RFC PATCH v2 6/6] USB: forbid memory allocation with I/O during bus reset

On Mon, Oct 22, 2012 at 10:37 PM, Alan Stern [off-list ref] wrote:

On Mon, 22 Oct 2012, Ming Lei wrote:

quoted

+     /*
+      * 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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