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

@ -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;
}

2
drivers/net/ethernet/qlogic/qede/qede_main.c
View file

@ -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);
}