vmscan: move initialisation of mapping down

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Now that we don't interrogate the BDI for congestion, we can delay looking
up the folio's mapping until we've got further through the function,
reducing register pressure and saving a call to folio_mapping for folios
we're adding to the swap cache.

Link: https://lkml.kernel.org/r/20220504182857.4013401-13-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Matthew Wilcox (Oracle) 2022-05-12 20:23:03 -07:00 • committed by Andrew Morton

parent 64daa5d818

commit 5441d4902f

1 changed files with 2 additions and 5 deletions

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mm/vmscan.c

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