diff options
| author | Alexander Duyck <alexander.h.duyck@redhat.com> | 2015-05-07 07:11:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-12 17:39:26 +0300 |
| commit | b63ae8ca096dfdbfeef6a209c30a93a966518853 (patch) | |
| tree | fb9a8648b7e68712d0e0009fcc8cc845cbb95507 /include/linux/skbuff.h | |
| parent | 0e39250845c0f91acc64264709b25f7f9b85c2c3 (diff) | |
| download | linux-b63ae8ca096dfdbfeef6a209c30a93a966518853.tar.xz | |
mm/net: Rename and move page fragment handling from net/ to mm/
This change moves the __alloc_page_frag functionality out of the networking
stack and into the page allocation portion of mm. The idea it so help make
this maintainable by placing it with other page allocation functions.
Since we are moving it from skbuff.c to page_alloc.c I have also renamed
the basic defines and structure from netdev_alloc_cache to page_frag_cache
to reflect that this is now part of a different kernel subsystem.
I have also added a simple __free_page_frag function which can handle
freeing the frags based on the skb->head pointer. The model for this is
based off of __free_pages since we don't actually need to deal with all of
the cases that put_page handles. I incorporated the virt_to_head_page call
and compound_order into the function as it actually allows for a signficant
size reduction by reducing code duplication.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8b9a2c35a9d7..0039fcc45b3b 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2128,9 +2128,6 @@ static inline void __skb_queue_purge(struct sk_buff_head *list) kfree_skb(skb); } -#define NETDEV_FRAG_PAGE_MAX_SIZE __ALIGN_MASK(32768, ~PAGE_MASK) -#define NETDEV_FRAG_PAGE_MAX_ORDER get_order(NETDEV_FRAG_PAGE_MAX_SIZE) - void *netdev_alloc_frag(unsigned int fragsz); struct sk_buff *__netdev_alloc_skb(struct net_device *dev, unsigned int length, |