Re: changes to kiobuf support in 2.4.(?)4

Gerd Knorr (kraxel@bytesex.org)
2 Aug 2001 08:23:37 GMT

> The reason of the large allocation and to put the bh inside the kiobuf
> is that if we do a small allocation then we end with a zillion of
> allocations of the bh and freeing of the bh at every I/O!! (not even at
> every read/write syscall, much more frequently)

That is true for block device I/O only. Current bttv versions are using
kiobufs to lock down user pages for DMA. But I don't need the bh's to
transfer the video frames ...

Gerd

-- 
Damn lot people confuse usability and eye-candy.
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