Convert clear_page_range pagetable walkers to loops using p?d_addr_end.
These are exceptional in that some out-of-tree memory layouts might pass
end 0, so the macros need to handle that (though previous code did not).
The naming here was out of step: now we usually pass pmd_t *pmd down to
Convert clear_page_range pagetable walkers to loops using p?d_addr_end.
These are exceptional in that some out-of-tree memory layouts might pass
end 0, so the macros need to handle that (though previous code did not).
The naming here was out of step: now we usually pass pmd_t *pmd down to
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