Commit e4090216 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Vlastimil Babka
Browse files

slab: Remove folio references from kfree() 



This should generate identical code to the previous version, but
without any dependency on how folios work.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20251113000932.1589073-9-willy@infradead.org


Reviewed-by: default avatarHarry Yoo <harry.yoo@oracle.com>
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
parent f262cfd7

mm/slub.c

+5 −5
Original line number Diff line number Diff line
@@ -6817,7 +6817,7 @@ void kvfree_rcu_cb(struct rcu_head *head) 
 */

void kfree(const void *object)

{

	struct folio *folio;

	struct page *page;

	struct slab *slab;

	struct kmem_cache *s;

	void *x = (void *)object;
@@ -6827,13 +6827,13 @@ void kfree(const void *object) 
	if (unlikely(ZERO_OR_NULL_PTR(object)))

		return;



	folio = virt_to_folio(object);

	if (unlikely(!folio_test_slab(folio))) {

		free_large_kmalloc(&folio->page, (void *)object);

	page = virt_to_page(object);

	slab = page_slab(page);

	if (!slab) {

		free_large_kmalloc(page, (void *)object);

		return;

	}



	slab = folio_slab(folio);

	s = slab->slab_cache;

	slab_free(s, slab, x, _RET_IP_);

}