slab: use memdesc_nid()

We no longer need to convert from slab to folio to get the nid, we can ask
memdesc_nid() for the nid directly.

Link: https://lkml.kernel.org/r/20250805172307.1302730-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/slab.h b/mm/slab.h
index 7757331e7c80f5276d058e0603d6dcb81a2607eb..c41a512dd07cc3af5ad8c8259af9e65f0823b382 100644 (file)
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -174,12 +174,12 @@ static inline void *slab_address(const struct slab *slab)
 
 static inline int slab_nid(const struct slab *slab)
 {
-       return folio_nid(slab_folio(slab));
+       return memdesc_nid(slab->flags);
 }
 
 static inline pg_data_t *slab_pgdat(const struct slab *slab)
 {
-       return folio_pgdat(slab_folio(slab));
+       return NODE_DATA(slab_nid(slab));
 }
 
 static inline struct slab *virt_to_slab(const void *addr)