Re: [PATCH] mm: cma: Discard clean pages during contiguous allocationinstead of migration

From: Geert Uytterhoeven
Date: Thu Sep 13 2012 - 15:17:23 EST

On Tue, Sep 11, 2012 at 2:41 AM, Minchan Kim <minchan@xxxxxxxxxx> wrote:
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -674,8 +674,10 @@ static enum page_references page_check_references(struct page *page,
> static unsigned long shrink_page_list(struct list_head *page_list,
> struct zone *zone,
> struct scan_control *sc,
> + enum ttu_flags ttu_flags,

"enum ttu_flags" is defined on CONFIG_MMU=y only, causing on nommu:

mm/vmscan.c:677:26: error: parameter 4 ('ttu_flags') has incomplete type
mm/vmscan.c:987:5: error: 'TTU_UNMAP' undeclared (first use in this function)
mm/vmscan.c:987:15: error: 'TTU_IGNORE_ACCESS' undeclared (first use
in this function)
mm/vmscan.c:1312:56: error: 'TTU_UNMAP' undeclared (first use in this function)

E.g. (h8300-defconfig) (sh-allnoconfig)



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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