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Rev 2787 Rev 4377
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    ASSERT(addr - area->base < area->backend_data.frames * FRAME_SIZE);
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    ASSERT(addr - area->base < area->backend_data.frames * FRAME_SIZE);
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    page_mapping_insert(AS, addr, base + (addr - area->base),
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    page_mapping_insert(AS, addr, base + (addr - area->base),
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        as_area_get_flags(area));
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        as_area_get_flags(area));
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        if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
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        if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
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                panic("Could not insert used space.\n");
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                panic("Cannot insert used space.");
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    return AS_PF_OK;
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    return AS_PF_OK;
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}
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}
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/** Share address space area backed by physical memory.
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/** Share address space area backed by physical memory.