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| author |   Jan Kara <jack@suse.cz> | 2017-11-15 17:34:33 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 18:21:03 -0800 |
| commit | 72b045aecdd856b083521f2a963705b4c2e59680 (patch) | |
| tree | 586bdb2ee2ed3322084e10355b02e4e9c8fd622a /include/linux/pagevec.h | |
| parent | mm/page_owner.c: reduce page_owner structure size (diff) | |
| download | linux-dev-72b045aecdd856b083521f2a963705b4c2e59680.tar.xz linux-dev-72b045aecdd856b083521f2a963705b4c2e59680.zip | |
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 'include/linux/pagevec.h')
| -rw-r--r-- | include/linux/pagevec.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h index 2636c0c0f279..afc718f586f8 100644 --- a/include/linux/pagevec.h +++ b/include/linux/pagevec.h @@ -38,9 +38,16 @@ static inline unsigned pagevec_lookup(struct pagevec *pvec, return pagevec_lookup_range(pvec, mapping, start, (pgoff_t)-1); } -unsigned pagevec_lookup_tag(struct pagevec *pvec, +unsigned pagevec_lookup_range_tag(struct pagevec *pvec, + struct address_space *mapping, pgoff_t *index, pgoff_t end, + int tag, unsigned nr_pages); +static inline unsigned pagevec_lookup_tag(struct pagevec *pvec, struct address_space *mapping, pgoff_t *index, int tag, - unsigned nr_pages); + unsigned nr_pages) +{ + return pagevec_lookup_range_tag(pvec, mapping, index, (pgoff_t)-1, tag, + nr_pages); +} static inline void pagevec_init(struct pagevec *pvec, int cold) { |