diff options
| author |   Vlastimil Babka <vbabka@suse.cz> | 2025-06-02 13:02:12 +0200 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2025-06-17 11:57:22 +0200 |
| commit | e2d18cbf178775ad377ad88ee55e6e183c38d262 (patch) | |
| tree | 20f3d13056e43ce18cedecd0939faed1fa0a56d6 | |
| parent | Linux 6.16-rc2 (diff) | |
| download | wireguard-linux-e2d18cbf178775ad377ad88ee55e6e183c38d262.tar.xz wireguard-linux-e2d18cbf178775ad377ad88ee55e6e183c38d262.zip | |
mm, slab: restore NUMA policy support for large kmalloc
The slab allocator observes the task's NUMA policy in various places
such as allocating slab pages. Large kmalloc() allocations used to do
that too, until an unintended change by c4cab557521a ("mm/slab_common:
cleanup kmalloc_large()") resulted in ignoring mempolicy and just
preferring the local node. Restore the NUMA policy support.
Fixes: c4cab557521a ("mm/slab_common: cleanup kmalloc_large()")
Cc: <stable@vger.kernel.org>
Acked-by: Christoph Lameter (Ampere) <cl@gentwo.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
| -rw-r--r-- | mm/slub.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c index 31e11ef256f9..06d64a5fb1bf 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4269,7 +4269,12 @@ static void *___kmalloc_large_node(size_t size, gfp_t flags, int node) flags = kmalloc_fix_flags(flags); flags |= __GFP_COMP; - folio = (struct folio *)alloc_pages_node_noprof(node, flags, order); + + if (node == NUMA_NO_NODE) + folio = (struct folio *)alloc_pages_noprof(flags, order); + else + folio = (struct folio *)__alloc_pages_noprof(flags, order, node, NULL); + if (folio) { ptr = folio_address(folio); lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B, |