On Tue, Jan 10, 2023 at 12:51:24AM +0000, SeongJae Park wrote: > The standard idiom for getting head page of a given folio is > '&folio->page', but some are wrongly using 'folio_page(folio, 0)' for > the purpose. Fix those to use the idiom. > > Suggested-by: Matthew Wilcox <willy@xxxxxxxxxxxxx> > Signed-off-by: SeongJae Park <sj@xxxxxxxxxx> > --- > mm/slab.c | 4 ++-- > mm/slub.c | 2 +- > 2 files changed, 3 insertions(+), 3 deletions(-) > > diff --git a/mm/slab.c b/mm/slab.c > index b77be9c6d6b1..a5398676dc60 100644 > --- a/mm/slab.c > +++ b/mm/slab.c > @@ -1389,7 +1389,7 @@ static void kmem_freepages(struct kmem_cache *cachep, struct slab *slab) > > BUG_ON(!folio_test_slab(folio)); > __slab_clear_pfmemalloc(slab); > - page_mapcount_reset(folio_page(folio, 0)); > + page_mapcount_reset(&folio->page); > folio->mapping = NULL; > /* Make the mapping reset visible before clearing the flag */ > smp_wmb(); > @@ -1398,7 +1398,7 @@ static void kmem_freepages(struct kmem_cache *cachep, struct slab *slab) > if (current->reclaim_state) > current->reclaim_state->reclaimed_slab += 1 << order; > unaccount_slab(slab, order, cachep); > - __free_pages(folio_page(folio, 0), order); > + __free_pages(&folio->page, order); > } > > static void kmem_rcu_free(struct rcu_head *head) > diff --git a/mm/slub.c b/mm/slub.c > index 67020074ecb4..d5f20c062004 100644 > --- a/mm/slub.c > +++ b/mm/slub.c > @@ -2066,7 +2066,7 @@ static void __free_slab(struct kmem_cache *s, struct slab *slab) > if (current->reclaim_state) > current->reclaim_state->reclaimed_slab += pages; > unaccount_slab(slab, order, s); > - __free_pages(folio_page(folio, 0), order); > + __free_pages(&folio->page, order); > } > > static void rcu_free_slab(struct rcu_head *h) > -- > 2.25.1 > > Acked-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx> Thanks!
