Re: [RFC PATCH 24/32] mm/kasan: Convert to struct slab
From: Matthew Wilcox <willy@infradead.org>
Date: 2021-11-16 21:41:34
On Tue, Nov 16, 2021 at 01:16:20AM +0100, Vlastimil Babka wrote:
quoted hunk ↗ jump to hunk
@@ -411,12 +412,12 @@ void __kasan_slab_free_mempool(void *ptr, unsigned long ip) * !PageSlab() when the size provided to kmalloc is larger than * KMALLOC_MAX_SIZE, and kmalloc falls back onto page_alloc. */ - if (unlikely(!PageSlab(page))) { + if (unlikely(!folio_test_slab(folio))) { if (____kasan_kfree_large(ptr, ip)) return; - kasan_poison(ptr, page_size(page), KASAN_FREE_PAGE, false); + kasan_poison(ptr, folio_size(folio), KASAN_FREE_PAGE, false); } else { - ____kasan_slab_free(page->slab_cache, ptr, ip, false, false); + ____kasan_slab_free(folio_slab(folio)->slab_cache, ptr, ip, false, false);
I'd avoid this long line by doing: struct slab *slab = folio_slab(folio); ____kasan_slab_free(slab->slab_cache, ptr, ip, false, false);