iomap: Convert __iomap_zero_iter to use a folio

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The zero iterator can work in folio-sized chunks instead of page-sized
chunks.  This will save a lot of page cache lookups if the file is cached
in large folios.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

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Matthew Wilcox (Oracle) 2021-11-05 14:24:09 -04:00

parent d454ab82bc

commit a25def1fe5

1 changed files with 9 additions and 5 deletions

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fs/iomap/buffered-io.c

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