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

Nick Piggin
2004-06-20T10:25:14Z

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.