mm/filemap: Add readahead_folio()

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The pointers stored in the page cache are folios, by definition.
This change comes with a behaviour change -- callers of readahead_folio()
are no longer required to put the page reference themselves.  This matches
how readpage works, rather than matching how readpages used to work.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>

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Matthew Wilcox (Oracle) 2021-04-27 16:37:09 -04:00

parent f705bf84ea

commit 9bf70167e3

1 changed files with 39 additions and 15 deletions

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54

include/linux/pagemap.h

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