diff --git a/include/linux/socket.h b/include/linux/socket.h index 1ce1f768a58ca5a75e9cd6a0e2f3a2dd385d3910..60e01482a9c4a290f9a1265b2e0681d03911511f 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -287,6 +287,7 @@ struct ucred { #define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */ #define MSG_BATCH 0x40000 /* sendmmsg(): more messages coming */ #define MSG_EOF MSG_FIN +#define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */ #define MSG_ZEROCOPY 0x4000000 /* Use user data in kernel path */ #define MSG_FASTOPEN 0x20000000 /* Send data in TCP SYN */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index fb350f740f693b59eb9354e69f10bee81619eabd..f90ec24c2cc88714078cb7f52f210d5f84043ac6 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -994,7 +994,9 @@ ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset, get_page(page); skb_fill_page_desc(skb, i, page, offset, copy); } - skb_shinfo(skb)->tx_flags |= SKBTX_SHARED_FRAG; + + if (!(flags & MSG_NO_SHARED_FRAGS)) + skb_shinfo(skb)->tx_flags |= SKBTX_SHARED_FRAG; skb->len += copy; skb->data_len += copy;