On Sat, 2021-07-10 at 21:50 +0200, Julia Lawall wrote: > On Fri, 9 Jul 2021, Joe Perches wrote: > > > Here is a cocci script to convert various types of bitmap allocations > > that use BITS_TO_LONGS to the more typical bitmap_alloc functions. > > > > Perhaps something like it could be added to scripts/coccinelle. > > The diff produced by the script is also below. > > > > $ cat bitmap_allocs.cocci > > // typical uses of bitmap allocations [] > > @@ > > expression val; > > expression e1; > > expression e2; > > @@ > > > > - val = kcalloc(BITS_TO_LONGS(e1), sizeof(*val), e2) > > + val = bitmap_zalloc(e1, e2) > > Is there something that guarantees that val has a type that has a size that > is the same as a long? no, but afaict, all do.
