From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Mon, 24 Nov 2025 14:23:27 +0000 (+0000)
Subject: slab: Remove unnecessary call to compound_head() in alloc_from_pcs()
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b55590558ff7c66c4a494af8ea08999c27594bc8;p=thirdparty%2Flinux.git

slab: Remove unnecessary call to compound_head() in alloc_from_pcs()

Each page knows which node it belongs to, so there's no need to
convert to a folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20251124142329.1691780-1-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---

diff --git a/mm/slub.c b/mm/slub.c
index 8e5da7b6efe49..25cc3d59337b6 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5149,7 +5149,7 @@ void *alloc_from_pcs(struct kmem_cache *s, gfp_t gfp, int node)
 		 * be false because of cpu migration during an unlocked part of
 		 * the current allocation or previous freeing process.
 		 */
-		if (folio_nid(virt_to_folio(object)) != node) {
+		if (page_to_nid(virt_to_page(object)) != node) {
 			local_unlock(&s->cpu_sheaves->lock);
 			return NULL;
 		}