[patch] Re: [patch] bootmem bitmap always considered dma memory

Ingo Molnar (mingo@chiara.csoma.elte.hu)
Thu, 9 Dec 1999 15:27:08 +0100 (CET)

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On Thu, 9 Dec 1999, [iso-8859-1] Mika Penttil=E4 wrote:

> Aren't the highmem pages also considered as PG_DMA, because
> free_area_init_core() sets the PG_DMA flag and it isn't cleared. in
> mem_init() ?

This is a bug, but it didnt have any bad effect so far because nothing
really tried to use highpages for direct swapping or direct IO. The
attached onliner fixes this.

free_page() doesnt use PG_DMA anymore, it's freeing stuff based on
page->zone. Probably other places should use page->zone as well, not
PG_DMA.

-- mingo

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