Messages in this thread | | | Date | Mon, 12 Jan 2004 11:27:20 -0500 (EST) | From | Alan Stern <> | Subject | Re: [linux-usb-devel] Re: USB hangs |
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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
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