Re: 3gb/1gb (fwd)

On 2008-09-05 at 16:49:51 [+0200], Alexander G. M. Smith <[email protected]> 
wrote:
> On the flip side, a smaller kernel space would mean a smaller RAM disk
> size limit (for ones which store the disk in kernel memory).  Or more
> contortions to copy data from one memory area to another.  It would
> also reduce the space for file system cache memory, I presume.

That would only be relevant for block cache. File caches map their pages only 
when needed.

> By the way, is there a kernel call for copying between mutually
> inaccessible user memory areas?

Nope, but it is possible to clone one area into the other address space and 
then copy as usual.

CU, Ingo

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