Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+6
-1
+6
-1
mm/slub.c
+6
-1
mm/slub.c
···
4269
4269
flags = kmalloc_fix_flags(flags);
4270
4270
4271
4271
flags |= __GFP_COMP;
4272
-
folio = (struct folio *)alloc_pages_node_noprof(node, flags, order);
4272
+
4273
+
if (node == NUMA_NO_NODE)
4274
+
folio = (struct folio *)alloc_pages_noprof(flags, order);
4275
+
else
4276
+
folio = (struct folio *)__alloc_pages_noprof(flags, order, node, NULL);
4277
+
4273
4278
if (folio) {
4274
4279
ptr = folio_address(folio);
4275
4280
lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B,