Hi Marcelo :)

    This patch fixes the same corner case, but does something useful
even or architectures where TASK_SIZE is greater than SIZE_MAX-PAGE_SIZE

    The patch is from David S. Miller, not me. My patch was
incomplete and did nothing on 'big TASK_SIZE' architectures, as
sparc64.

    The patch is against both 2.4.20 and 2.4.21-pre1, is just the same.

    Raśl