diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-11-25 21:01:46 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-01-13 22:40:33 -0800 |
| commit | 642975242e328620ac136d6e02aceb253e9ee460 (patch) | |
| tree | ca878c6e41eee3bc7fb944285fb2ad60f085ffec /mm/internal.h | |
| parent | 49249a2a5eeb912e66951dfe9a5924eb0dd14d50 (diff) | |
mm/mempolicy: add alloc_frozen_pages()
Provide an interface to allocate pages from the page allocator without
incrementing their refcount. This saves an atomic operation on free,
which may be beneficial to some users (eg slab).
Link: https://lkml.kernel.org/r/20241125210149.2976098-15-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index b831688a71e8..6f6585e98c6f 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -747,6 +747,18 @@ struct page *__alloc_frozen_pages_noprof(gfp_t, unsigned int order, int nid, void free_frozen_pages(struct page *page, unsigned int order); void free_unref_folios(struct folio_batch *fbatch); +#ifdef CONFIG_NUMA +struct page *alloc_frozen_pages_noprof(gfp_t, unsigned int order); +#else +static inline struct page *alloc_frozen_pages_noprof(gfp_t gfp, unsigned int order) +{ + return __alloc_frozen_pages_noprof(gfp, order, numa_node_id(), NULL); +} +#endif + +#define alloc_frozen_pages(...) \ + alloc_hooks(alloc_frozen_pages_noprof(__VA_ARGS__)) + extern void zone_pcp_reset(struct zone *zone); extern void zone_pcp_disable(struct zone *zone); extern void zone_pcp_enable(struct zone *zone); |