mm/swap: Add folio_rotate_reclaimable()

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Convert rotate_reclaimable_page() to folio_rotate_reclaimable().  This
eliminates all five of the calls to compound_head() in this function,
saving 75 bytes at the cost of adding 15 bytes to its one caller,
end_page_writeback().  We also save 36 bytes from pagevec_move_tail_fn()
due to using folios there.  Net 96 bytes savings.

Also move its declaration to mm/internal.h as it's only used by filemap.c.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: David Howells <dhowells@redhat.com>

...

This commit is contained in:

Matthew Wilcox (Oracle) 2020-12-08 01:25:39 -05:00

parent 9138e47ed4

commit 575ced1c8b

5 changed files with 21 additions and 18 deletions

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1

include/linux/swap.h

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3

mm/filemap.c

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1

mm/internal.h

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4

mm/page_io.c

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30

mm/swap.c

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