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SubjectRe: [PATCH 04/15] iomap: Support large pages
On Wed, Oct 02, 2019 at 09:32:11PM +0800, Hillf Danton wrote:
>
> On Tue, 24 Sep 2019 17:52:02 -0700 From: Matthew Wilcox (Oracle)
> >
> > @@ -1415,6 +1415,8 @@ static inline void clear_page_pfmemalloc(struct page *page)
> > extern void pagefault_out_of_memory(void);
> >
> > #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK)
>
> With the above define, the page_offset function is not named as badly
> as 03/15 claims.

Just because there exists a function that does the job, does not mean that
the other function is correctly named.

> > +#define offset_in_this_page(page, p) \
> > + ((unsigned long)(p) & (page_size(page) - 1))
>
> What if Ted will post a rfc with offset_in_that_page defined next week?

Are you trying to be funny?

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