From 93d3b7140ad379885849ad2674b4290c9e8273da Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 15 Nov 2017 17:35:12 -0800 Subject: mm: add variant of pagevec_lookup_range_tag() taking number of pages Currently pagevec_lookup_range_tag() takes number of pages to look up but most users don't need this. Create a new function pagevec_lookup_range_nr_tag() that takes maximum number of pages to lookup for Ceph which wants this functionality so that we can drop nr_pages argument from pagevec_lookup_range_tag(). Link: http://lkml.kernel.org/r/20171009151359.31984-13-jack@suse.cz Signed-off-by: Jan Kara Reviewed-by: Daniel Jordan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/swap.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'mm/swap.c') diff --git a/mm/swap.c b/mm/swap.c index e1c74eb8a775..6c50fec2da92 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -996,6 +996,15 @@ unsigned pagevec_lookup_range_tag(struct pagevec *pvec, } EXPORT_SYMBOL(pagevec_lookup_range_tag); +unsigned pagevec_lookup_range_nr_tag(struct pagevec *pvec, + struct address_space *mapping, pgoff_t *index, pgoff_t end, + int tag, unsigned max_pages) +{ + pvec->nr = find_get_pages_range_tag(mapping, index, end, tag, + min_t(unsigned int, max_pages, PAGEVEC_SIZE), pvec->pages); + return pagevec_count(pvec); +} +EXPORT_SYMBOL(pagevec_lookup_range_nr_tag); /* * Perform any setup for the swap system */ -- cgit v1.2.3