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mm/page_ref: use page_ref helper instead of direct modification of _count

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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 <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Sunil Goutham <[email protected]>
Cc: Chris Metcalf <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2016-05-19 17:10:46 -07:00 • committed by Linus Torvalds
commit 6d061f9f61
4 changed files with 4 additions and 4 deletions
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2
net/wireless/util.c
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@ -651,7 +651,7 @@ __frame_add_frag(struct sk_buff *skb, struct page *page,
struct skb_shared_info *sh = skb_shinfo(skb);
int page_offset;
atomic_inc(&page->_count);
page_ref_inc(page);
page_offset = ptr - page_address(page);
skb_add_rx_frag(skb, sh->nr_frags, page, page_offset, len, size);
}