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| author | Vlastimil Babka <vbabka@suse.cz> | 2025-06-02 13:02:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:36:33 +0200 |
| commit | 33ee6d6d21250fb23ec56ae657de500fab61ea8e (patch) | |
| tree | 9edaca7c6ebb4c8c826192dcbb5a055ecaa5a155 | |
| parent | d8c4b8847d1959367e42c9ea4517fedc28f266ad (diff) | |
| download | linux-33ee6d6d21250fb23ec56ae657de500fab61ea8e.tar.gz linux-33ee6d6d21250fb23ec56ae657de500fab61ea8e.tar.bz2 linux-33ee6d6d21250fb23ec56ae657de500fab61ea8e.zip | |
mm, slab: restore NUMA policy support for large kmalloc
commit e2d18cbf178775ad377ad88ee55e6e183c38d262 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 5c73b956615f..b8d75fcabbc7 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4268,7 +4268,12 @@ 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, |