On 2023/8/7 10:32, Miaohe Lin wrote: > It's more readable to use helper macro BITS_PER_LONG and BITS_PER_BYTE. > No functional change intended. > I forgot to collect the Reviewed-by tag and resend one. Sorry for make noise. > Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> > --- > v2: > use BITS_PER_BYTE per Mike. Thanks. > --- > mm/mm_init.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/mm/mm_init.c b/mm/mm_init.c > index 66aca3f6accd..93b1febd4a32 100644 > --- a/mm/mm_init.c > +++ b/mm/mm_init.c > @@ -79,7 +79,7 @@ void __init mminit_verify_pageflags_layout(void) > int shift, width; > unsigned long or_mask, add_mask; > > - shift = 8 * sizeof(unsigned long); > + shift = BITS_PER_LONG; > width = shift - SECTIONS_WIDTH - NODES_WIDTH - ZONES_WIDTH > - LAST_CPUPID_SHIFT - KASAN_TAG_WIDTH - LRU_GEN_WIDTH - LRU_REFS_WIDTH; > mminit_dprintk(MMINIT_TRACE, "pageflags_layout_widths", > @@ -1431,9 +1431,9 @@ static unsigned long __init usemap_size(unsigned long zone_start_pfn, unsigned l > usemapsize = roundup(zonesize, pageblock_nr_pages); > usemapsize = usemapsize >> pageblock_order; > usemapsize *= NR_PAGEBLOCK_BITS; > - usemapsize = roundup(usemapsize, 8 * sizeof(unsigned long)); > + usemapsize = roundup(usemapsize, BITS_PER_LONG); > > - return usemapsize / 8; > + return usemapsize / BITS_PER_BYTE; > } > > static void __ref setup_usemap(struct zone *zone) >
