slab: allocate frozen pages

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Since slab does not use the page refcount, it can allocate and free frozen
pages, saving one atomic operation per free.

Link: https://lkml.kernel.org/r/20241125210149.2976098-16-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.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>

...

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Matthew Wilcox (Oracle) 2024-11-25 21:01:47 +00:00 • committed by Andrew Morton

parent 642975242e

commit 9aec2fb0fd

1 changed files with 3 additions and 3 deletions

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mm/slub.c

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