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mm/sl{a,u}b: fix wrong usages of folio_page() for getting head pages 

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@infradead.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
SeongJae Park 2023-01-10 00:51:24 +00:00 committed by Vlastimil Babka
parent 35e3c36d43
commit c034c6a45c
2 changed files with 3 additions and 3 deletions
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4
mm/slab.c
View File

@ -1386,7 +1386,7 @@ 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();
@ -1395,7 +1395,7 @@ 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)

2
mm/slub.c
View File

@ -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)