x86: make DEBUG_PAGEALLOC and CPA more robust

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Use PF_MEMALLOC to prevent recursive calls in the DBEUG_PAGEALLOC
case. This makes the code simpler and more robust against allocation
failures.

This fixes the following fallback to non-mmconfig:

   http://lkml.org/lkml/2008/2/20/551
   http://bugzilla.kernel.org/show_bug.cgi?id=10083

Also, for DEBUG_PAGEALLOC=n reduce the pool size to one page.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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This commit is contained in:

Ingo Molnar 2008-02-13 14:37:52 +01:00

parent 1ce70c4fac

commit 92cb54a37a

1 changed files with 51 additions and 33 deletions

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84

arch/x86/mm/pageattr.c

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