Messages in this thread | | | Date | Fri, 2 Jun 2006 09:53:59 +0200 | From | "Jesper Juhl" <> | Subject | Re: Page Allocation Failure, Why?? Bug in kernel?? |
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On 02/06/06, Nick Piggin <nickpiggin@yahoo.com.au> 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.
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