On Thu, Feb 20, 2020 at 10:00:30AM -0500, Zi Yan wrote: > > +/* The index of the first page in this readahead block */ > > +static inline unsigned int readahead_index(struct readahead_control *rac) > > +{ > > + return rac->_index; > > +} > > rac->_index is pgoff_t, so readahead_index() should return the same type, right? > BTW, pgoff_t is unsigned long. Oh my goodness! Thank you for spotting that. Fortunately, it's only currently used by tracepoints, so it wasn't causing any trouble, but that's a nasty landmine to leave lying around. Fixed: static inline pgoff_t readahead_index(struct readahead_control *rac)