David S. Miller wrote:
Right.
On sparc32 we had the issue where we had a 8K page size
platform (sun4) and the rest were using 4K page size.
I can't even think why we do that fixed shift actually. I think Jakub
Jalinek thought this might be a way to make applications assuming
4K page size work on the 8K page size machines.
I'm going to say that you can feel free to fix this to use PAGE_SHIFT
correctly all the time. Applications should be calling getpagesize()
and not assume what that value might be.
Okay, what I'll do is that I'll hard-code 12 on i386, SPARC and ARM; on
other architectures I'll use getpagesize(). Of course, on 64-bit
architectures this is not an issue; there I just call sys_mmap.
-hpa
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