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| author | Jan Kara <jack@suse.cz> | 2017-11-15 17:35:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 18:21:04 -0800 |
| commit | 93d3b7140ad379885849ad2674b4290c9e8273da (patch) | |
| tree | 1f402ff4063c564273d5940a05641e5a9720ab49 /mm/swap.c | |
| parent | 2b9775ae422fa46b4aee2bb2a8d2184a5a3b90e0 (diff) | |
| download | lwn-93d3b7140ad379885849ad2674b4290c9e8273da.tar.gz lwn-93d3b7140ad379885849ad2674b4290c9e8273da.zip | |
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 <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 9 |
1 files changed, 9 insertions, 0 deletions
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 */ |