Re: page allocation failure. order:0, mode:0x20

From: Nick Piggin (nickpiggin_at_yahoo.com.au)
Date: 06/20/04

  • Next message: Nick Piggin: "Re: Kernel 2.6.6 & 2.6.7 sometime hang after much I/O" 
    Date:	Sun, 20 Jun 2004 20:25:02 +1000
To: Geert Uytterhoeven <geert@linux-m68k.org>

    Geert Uytterhoeven wrote:
    > While running 2.6.7 on my Amiga, I got:
    >
    > | cp: page allocation failure. order:0, mode:0x20
    > | Call Trace: [<000290a8>] __alloc_pages+0x230/0x250
    > | [<00159e9b>] sine_data+0x1142/0x1d95
    > | [<0001c9cc>] update_wall_time+0x16/0x3a
    > | [<000290f2>] __get_free_pages+0x2a/0x3e
    > | [<0002bc4a>] kmem_getpages+0x24/0xc2
    > | [<0002c54c>] cache_grow+0x7c/0x196
    > | [<0002c7ae>] cache_alloc_refill+0x148/0x17c
    > | [<0000220d>] init+0xc3/0xc8
    > | [<00001000>] _stext+0x0/0x1000
    > | [<0002cc62>] __kmalloc+0x4e/0x6a
    > | [<000f89be>] alloc_skb+0x3e/0x102
    > | [<000d8d90>] ariadne_rx+0xb2/0x208
    > | [<0000f204>] scosh+0x1a8/0x540
    > | [<000d8936>] ariadne_interrupt+0x70/0x23a
    > | [<00001000>] _stext+0x0/0x1000
    > | [<0000a67c>] amiga_do_irq_list+0x42/0x54
    > | [<0000abfa>] cia_handler+0x76/0x80
    > | [<00001000>] _stext+0x0/0x1000
    > | [<000063c6>] process_int+0x42/0x70
    > | [<000051de>] inthandler+0x2a/0x2c
    > | ...
    >
    > But it looks like there are still opportunities to allocate memory:
    >
    > | # free
    > | total used free shared buffers cached
    > | Mem: 10260 9844 416 0 240 5004
    > | -/+ buffers/cache: 4600 5660
    > | Swap: 33256 3796 29460
    >

    Not even atomic allocations memory are allowed to consume all memory.
    A small amount is reserved for memory freeing (which sometimes
    requires initial memory allocations).

    The message should be harmless.
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