> 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
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This archive was generated by hypermail 2b29 : Tue Aug 07 2001 - 21:00:17 EST