On 08/06/2011 12:58 PM, aarcange@redhat.com wrote:

From: Andrea Arcangeli<redacted>

Using "- 1" relies on the old_end to be page aligned and PAGE_SIZE>  1, those
are reasonable requirements but the check remains obscure and it looks more
like an off by one error than an overflow check. This I feel will improve
readibility.

Signed-off-by: Andrea Arcangeli<redacted>

Acked-by: Rik van Riel <redacted>

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