Hi Tao,
> I would prefer to exchange the if else sequence, to be:
>
> /* The global symbol of vmemmap is removed since kernel commit 7bc1a0f9e1765 */
> if (kernel_symbol_exists("vmemmap"))
> ms->vmemmap = symbol_value("vmemmap");
> else
> ms->vmemmap = ms->vmemmap_vaddr - ((ms->phys_offset >>
> machdep->pageshift) * ms->struct_page_size);
>
> This would be more readable, if a symbol exists, then read the symbol,
> otherwise calc it out.
>
I agree with your exchange.
Thanks
Qiwu
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