Messages in this thread |  | | | From | (Alan Cox) | | Subject | Re: PATCH: Raw device IO for 2.1.131 | | Date | Sun, 13 Dec 1998 20:00:37 +0000 (GMT) |
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> I think it's perfectly correct in this case to use mlock(), but the goal > is not to pin down pages as a basic mechanizm, but to guarantee bandwith. > (i assume the capture card can do at least page granularity scatter-gather > DMA?)
Yes. It can do that page level.
> (since it's video-capture, mlock() should not be much of an issue, the > card is a controlled resource anyway. If in the future we will have video
His torvaldsness rejected a patch that made mlock callable from inside drivers to do this sort of stuff. So thats not a possibility.
Alan
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