mm: add free_unref_folios()

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Iterate over a folio_batch rather than a linked list.  This is easier for
the CPU to prefetch and has a batch count naturally built in so we don't
need to track it.  Again, this lowers the maximum lock hold time from
32 folios to 15, but I do not expect this to have a significant effect.

Link: https://lkml.kernel.org/r/20240227174254.710559-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Matthew Wilcox (Oracle) 2024-02-27 17:42:37 +00:00 • committed by Andrew Morton

parent 7c76d92253

commit 90491d87dd

2 changed files with 39 additions and 25 deletions

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5

mm/internal.h

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59

mm/page_alloc.c

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