> > > This sounds like fairly severe memory fragmentation, which seems more
> > > worrisome to me than blocksize constraints. Should I look into that?
> >
> > Sorry for being dense, but I don't see why an 8 kB block would
> > need to occupy 2 contiguous pages in ram.
>
> Because all the kernel code knows that you can add a constant to the
> base of a buffer to get anywhere in that block. Also the one buffer
> per two page case isnt handled either
Is this still the case after blkdev-in-pagecache ?
Rik
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