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Groups > linux.kernel > #1365333
| From | js1304@gmail.com |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/2] mm/page_ref: use page_ref helper instead of direct modification of _count |
| Date | 2016-03-28 08:00 +0200 |
| Message-ID | <rhynw-2Dh-1@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
From: Joonsoo Kim <iamjoonsoo.kim@lge.com> 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> --- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 2 +- drivers/net/ethernet/qlogic/qede/qede_main.c | 2 +- mm/filemap.c | 2 +- net/wireless/util.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index fa05e34..8acd7c0 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -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; } diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index 518af32..394c97ff 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -791,7 +791,7 @@ 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); } diff --git a/mm/filemap.c b/mm/filemap.c index a8c69c8..0ebd326 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); } } diff --git a/net/wireless/util.c b/net/wireless/util.c index 9f440a9..e22432a 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -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); } -- 1.9.1
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[PATCH 1/2] mm/page_ref: use page_ref helper instead of direct modification of _count js1304@gmail.com - 2016-03-28 08:00 +0200
[PATCH 2/2] mm: rename _count, field of the struct page, to _refcount js1304@gmail.com - 2016-03-28 08:00 +0200
Re: [PATCH 2/2] mm: rename _count, field of the struct page, to _refcount kbuild test robot <lkp@intel.com> - 2016-03-28 08:10 +0200
Re: [PATCH 2/2] mm: rename _count, field of the struct page, to _refcount Joonsoo Kim <js1304@gmail.com> - 2016-03-28 08:30 +0200
Re: [PATCH 2/2] mm: rename _count, field of the struct page, to _refcount Joonsoo Kim <js1304@gmail.com> - 2016-03-28 08:10 +0200
Re: [PATCH 2/2] mm: rename _count, field of the struct page, to _refcount kbuild test robot <lkp@intel.com> - 2016-03-28 08:20 +0200
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