Re: [linux-usb-devel] Re: USB hangs

[Alan Stern]

On Mon, 12 Jan 2004, Oliver Neukum wrote:

> In 2.4 they all run in interrupt or thread context IIRC.
> Problematic is the SCSI error handling thread. It can call usb_reset_device()
> which calls down and does allocations.
> Does that thread also do the PF_MEMALLOC trick?

In 2.4 it doesn't, which is rather surpising considering how many storage 
devices run over SCSI transports.

In 2.6 it sets PF_IOTHREAD.  I don't know if that subsumes the function of 
PF_MEMALLOC or not.  The state of kerneldoc for much of the Linux core 
functionality is shocking.

Alan Stern

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