Hello, On (03/30/16 16:12), Minchan Kim wrote: [..] > +static int get_zspage_inuse(struct page *first_page) > +{ > + struct zs_meta *m; > + > + VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); > + > + m = (struct zs_meta *)&first_page->mapping; .. > +static void set_zspage_inuse(struct page *first_page, int val) > +{ > + struct zs_meta *m; > + > + VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); > + > + m = (struct zs_meta *)&first_page->mapping; .. > +static void mod_zspage_inuse(struct page *first_page, int val) > +{ > + struct zs_meta *m; > + > + VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); > + > + m = (struct zs_meta *)&first_page->mapping; .. > static void get_zspage_mapping(struct page *first_page, > unsigned int *class_idx, > enum fullness_group *fullness) > { > - unsigned long m; > + struct zs_meta *m; > + > VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); > + m = (struct zs_meta *)&first_page->mapping; .. > static void set_zspage_mapping(struct page *first_page, > unsigned int class_idx, > enum fullness_group fullness) > { > + struct zs_meta *m; > + > VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); > > + m = (struct zs_meta *)&first_page->mapping; > + m->fullness = fullness; > + m->class = class_idx; > } a nitpick: this struct zs_meta *m; VM_BUG_ON_PAGE(!is_first_page(first_page), first_page); m = (struct zs_meta *)&first_page->mapping; seems to be common in several places, may be it makes sense to factor it out and turn into a macro or a static inline helper? other than that, looks good to me Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> -ss -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>