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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2016-05-19 17:10:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 19:12:14 -0700 |
| commit | 6d061f9f6136d477932088c24ce155d7dc785746 (patch) | |
| tree | 826ccf493e5a9688bcb363fdc9c68705bf5ece1a /mm | |
| parent | 43efd3ea64f3cf8920e8793e6953321a466023e3 (diff) | |
| download | blackbird-op-linux-6d061f9f6136d477932088c24ce155d7dc785746.tar.gz blackbird-op-linux-6d061f9f6136d477932088c24ce155d7dc785746.zip | |
mm/page_ref: use page_ref helper instead of direct modification of _count
page_reference manipulation functions are introduced to track down
reference count change of the page. Use it instead of direct
modification of _count.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Sunil Goutham <sgoutham@cavium.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 182b21825255..01690338e3d2 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -213,7 +213,7 @@ void __delete_from_page_cache(struct page *page, void *shadow) * some other bad page check should catch it later. */ page_mapcount_reset(page); - atomic_sub(mapcount, &page->_count); + page_ref_sub(page, mapcount); } } |
