How do you free the space? The difficulty is that the physical memory
in question is now referenced by both kernel and user.
On Mon, Mar 29, 1999 at 07:19:25PM +0200, Tomasz Motylewski wrote:
> On Mon, 29 Mar 1999, Knud Woehler wrote:
>
> > why shared memory is a problem?
> > I use the bigphysarea-path
>
> The only problem is it requires reservation of memory at boot, while vmalloc
> and friends will try to get more memory from the system by freeing some
> buffers, swapping out the code, etc.
>
> So, if you do not know how much you will need, but you may need a lot,
> vmalloc is the only solution. I am just advertising a few functions allowing
> mmaping of vmalloced area to user space.
>
> Regards,
> --
> Tomek
>
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