diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 84bdaeca1314..f036493b9a61 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -247,8 +247,7 @@ struct cg_proto; * @sk_stamp: time stamp of last packet received * @sk_socket: Identd and reporting IO signals * @sk_user_data: RPC layer private data - * @sk_sndmsg_page: cached page for sendmsg - * @sk_sndmsg_off: cached offset for sendmsg + * @sk_frag: cached page frag * @sk_peek_off: current peek_offset value * @sk_send_head: front of stuff to transmit * @sk_security: used by security modules @@ -362,9 +361,8 @@ struct sock { ktime_t sk_stamp; struct socket *sk_socket; void *sk_user_data; - struct page *sk_sndmsg_page; + struct page_frag sk_frag; struct sk_buff *sk_send_head; - __u32 sk_sndmsg_off; __s32 sk_peek_off; int sk_write_pending; #ifdef CONFIG_SECURITY @@ -2034,18 +2032,23 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk) struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp); -static inline struct page *sk_stream_alloc_page(struct sock *sk) +/** + * sk_page_frag - return an appropriate page_frag + * @sk: socket + * + * If socket allocation mode allows current thread to sleep, it means its + * safe to use the per task page_frag instead of the per socket one. + */ +static inline struct page_frag *sk_page_frag(struct sock *sk) { - struct page *page = NULL; + if (sk->sk_allocation & __GFP_WAIT) + return ¤t->task_frag; - page = alloc_pages(sk->sk_allocation, 0); - if (!page) { - sk_enter_memory_pressure(sk); - sk_stream_moderate_sndbuf(sk); - } - return page; + return &sk->sk_frag; } +extern bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag); + /* * Default write policy as shown to user space via poll/select/SIGIO */ |