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Commit 6d061f9f authored by Joonsoo Kim's avatar Joonsoo Kim Committed by Linus Torvalds
Browse files

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: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: default avatarVlastimil 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 43efd3ea

drivers/net/ethernet/cavium/thunder/nicvf_queues.c

+1 −1
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ static void nicvf_get_page(struct nicvf *nic) 
	if (!nic->rb_pageref || !nic->rb_page)

		return;



	atomic_add(nic->rb_pageref, &nic->rb_page->_count);

	page_ref_add(nic->rb_page, nic->rb_pageref);

	nic->rb_pageref = 0;

}

drivers/net/ethernet/qlogic/qede/qede_main.c

+1 −1
Original line number Diff line number Diff line
@@ -920,7 +920,7 @@ static inline int qede_realloc_rx_buffer(struct qede_dev *edev, 
		 * network stack to take the ownership of the page

		 * which can be recycled multiple times by the driver.

		 */

		atomic_inc(&curr_cons->data->_count);

		page_ref_inc(curr_cons->data);

		qede_reuse_page(edev, rxq, curr_cons);

	}

mm/filemap.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

		}

	}

net/wireless/util.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}