swiotlb: add is_swiotlb_buffer helper function
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Mon, 8 Sep 2008 09:53:50 +0000 (18:53 +0900)
committerIngo Molnar <mingo@elte.hu>
Mon, 8 Sep 2008 13:53:31 +0000 (15:53 +0200)
This adds is_swiotlb_buffer() helper function to see whether a buffer
belongs to the swiotlb buffer or not.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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