diff options
| author | Jan Kara <jack@suse.cz> | 2017-11-15 17:34:33 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-07-08 17:31:57 -0700 |
| commit | bf9510b162c4d0f19d4a7f834efe065b2e6b0659 (patch) | |
| tree | 7025ae2e017c51675a4aeb8d3fab996fbb8fcd34 /mm/swap.c | |
| parent | 461247b21fde524b9022dcadb2a8e751ab520a55 (diff) | |
mm: implement find_get_pages_range_tag()
Patch series "Ranged pagevec tagged lookup", v3.
In this series I provide a ranged variant of pagevec_lookup_tag() and
use it in places where it makes sense. This series removes some common
code and it also has a potential for speeding up some operations
similarly as for pagevec_lookup_range() (but for now I can think of only
artificial cases where this happens).
This patch (of 16):
Implement a variant of find_get_pages_tag() that stops iterating at
given index. Lots of users of this function (through pagevec_lookup())
actually want a range lookup and all of them are currently open-coding
this.
Also create corresponding pagevec_lookup_range_tag() function.
Link: http://lkml.kernel.org/r/20171009151359.31984-2-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: David Howells <dhowells@redhat.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Steve French <sfrench@samba.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: "Yan, Zheng" <zyan@redhat.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, 5 insertions, 4 deletions
diff --git a/mm/swap.c b/mm/swap.c index 39395fb549c0..6eefbfabafc0 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -1130,14 +1130,15 @@ unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping, } EXPORT_SYMBOL(pagevec_lookup); -unsigned pagevec_lookup_tag(struct pagevec *pvec, struct address_space *mapping, - pgoff_t *index, int tag, unsigned nr_pages) +unsigned pagevec_lookup_range_tag(struct pagevec *pvec, + struct address_space *mapping, pgoff_t *index, pgoff_t end, + int tag, unsigned nr_pages) { - pvec->nr = find_get_pages_tag(mapping, index, tag, + pvec->nr = find_get_pages_range_tag(mapping, index, end, tag, nr_pages, pvec->pages); return pagevec_count(pvec); } -EXPORT_SYMBOL(pagevec_lookup_tag); +EXPORT_SYMBOL(pagevec_lookup_range_tag); /* * Perform any setup for the swap system |