Re: Page Allocation Failure, Why?? Bug in kernel??

[Jesper Juhl]

On 02/06/06, Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
> Abu M. Muttalib wrote:
> > Hi,
> >
> > I repeat my question, the required no of pages are available, as shown in
> > the dump produced by kernel, the request is not fulfilled. Its as follows:
> >
> > DMA: 106*4kB 11*8kB 5*16kB 3*32kB 2*64kB 1*128kB 0*256kB 0*512kB 0*1024kB =
> > 944kB
> >
> > Why this is so??
>
> Because some are kept in "emergency pools" for allocators that cannot
> sleep trying to free up memory.
>
> Teach the sound driver to use smaller buffers or just insert it at boot
> and leave it inserted. Why are you removing it then reinserting it?

Or, if the driver just need 32 pages that *appear* to be contiguous
without actually having to be physically contiguous, then allocate the
space with vmalloc(). Not always possible ofcourse, but if it is for
Abu's use, then perhaps that could be a solution.

--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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