Messages in this thread |  | | | Subject | Re: [PATCH] cryptoapi: Fix sleeping | | From | Robert Love <> | | Date | Thu, 14 Aug 2003 09:29:20 -0700 |
| |
On Wed, 2003-08-13 at 18:58, Matt Mackall wrote:
> This is part of cryptoapi and given the large chunks of work you could > potentially hand to it, it's probably a good idea for it to work this > way. You hand it a long list of sg segments, it does the transform and > reschedules if it thinks it's safe. But its test of when it was safe > was not complete.
Right. My concern is that you said sometimes it is called when preemption is disabled.
I assume because it is accessing per-processor data.
It is illegal to reschedule -- regardless of kernel preemption -- while in the middle of a critical section accessing per-processor data.
Robert Love
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |