diff options
| author | Jan Kara <jack@suse.cz> | 2017-11-15 17:35:12 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-07-08 17:36:40 -0700 |
| commit | f3aa4a25b8b0f92f537b8f55538a4e687ead1336 (patch) | |
| tree | a87f7907b5027e1c15030843586bfdf1047c91cc /mm/swap.c | |
| parent | 8914877e374a1bef6834d1adfab32a4564943f12 (diff) | |
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 6eefbfabafc0..bef40c04f864 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -1140,6 +1140,15 @@ 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 */ |