Your mail program is still broken. This shows up as a reply to the 0/15 email instead of as a reply to the 3/15 email. On Wed, Oct 02, 2019 at 09:07:53PM +0800, Hillf Danton wrote: > On Tue, 24 Sep 2019 17:52:02 -0700 From: Matthew Wilcox (Oracle) > > +/** > > + * file_offset_of_page - File offset of this page. > > + * @page: Page cache page. > > + * > > + * Context: Any context. > > + * Return: The offset of the first byte of this page. > > */ > > -static inline loff_t page_offset(struct page *page) > > +static inline loff_t file_offset_of_page(struct page *page) > > { > > return ((loff_t)page->index) << PAGE_SHIFT; > > } > > > > static inline loff_t page_file_offset(struct page *page) > > { > > return ((loff_t)page_index(page)) << PAGE_SHIFT; > > Would you like to specify the need to build a moon on the moon, > with another name though? I have no idea what you mean. Is this an idiom in your native language, perhaps?