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{
    "id": 831051,
    "url": "http://patchwork.ozlabs.org/api/1.2/patches/831051/?format=api",
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    "project": {
        "id": 7,
        "url": "http://patchwork.ozlabs.org/api/1.2/projects/7/?format=api",
        "name": "Linux network development",
        "link_name": "netdev",
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    "msgid": "<1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com>",
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    "date": "2017-10-27T04:21:40",
    "name": "[net] tcp: refresh tp timestamp before tcp_mtu_probe()",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "2434301590b365aa8d71df154c4d9324d0209d47",
    "submitter": {
        "id": 2404,
        "url": "http://patchwork.ozlabs.org/api/1.2/people/2404/?format=api",
        "name": "Eric Dumazet",
        "email": "eric.dumazet@gmail.com"
    },
    "delegate": {
        "id": 34,
        "url": "http://patchwork.ozlabs.org/api/1.2/users/34/?format=api",
        "username": "davem",
        "first_name": "David",
        "last_name": "Miller",
        "email": "davem@davemloft.net"
    },
    "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com/mbox/",
    "series": [
        {
            "id": 10488,
            "url": "http://patchwork.ozlabs.org/api/1.2/series/10488/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=10488",
            "date": "2017-10-27T04:21:40",
            "name": "[net] tcp: refresh tp timestamp before tcp_mtu_probe()",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/10488/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/831051/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/831051/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        "Message-ID": "<1509078100.11887.28.camel@edumazet-glaptop3.roam.corp.google.com>",
        "Subject": "[PATCH net] tcp: refresh tp timestamp before tcp_mtu_probe()",
        "From": "Eric Dumazet <eric.dumazet@gmail.com>",
        "To": "David Miller <davem@davemloft.net>",
        "Cc": "netdev <netdev@vger.kernel.org>",
        "Date": "Thu, 26 Oct 2017 21:21:40 -0700",
        "Content-Type": "text/plain; charset=\"UTF-8\"",
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    },
    "content": "From: Eric Dumazet <edumazet@google.com>\n\nIn the unlikely event tcp_mtu_probe() is sending a packet, we\nwant tp->tcp_mstamp being as accurate as possible. \n\nThis means we need to call tcp_mstamp_refresh() a bit earlier in\ntcp_write_xmit().\n\nFixes: 385e20706fac (\"tcp: use tp->tcp_mstamp in output path\")\nSigned-off-by: Eric Dumazet <edumazet@google.com>\n---\n net/ipv4/tcp_output.c |    2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)",
    "diff": "diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c\nindex 1151870018e345592853b035a0902121c41e268d..ae60dd3faed0adc71731bc686f878afd4c628d32 100644\n--- a/net/ipv4/tcp_output.c\n+++ b/net/ipv4/tcp_output.c\n@@ -2239,6 +2239,7 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,\n \n \tsent_pkts = 0;\n \n+\ttcp_mstamp_refresh(tp);\n \tif (!push_one) {\n \t\t/* Do MTU probing. */\n \t\tresult = tcp_mtu_probe(sk);\n@@ -2250,7 +2251,6 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,\n \t}\n \n \tmax_segs = tcp_tso_segs(sk, mss_now);\n-\ttcp_mstamp_refresh(tp);\n \twhile ((skb = tcp_send_head(sk))) {\n \t\tunsigned int limit;\n \n",
    "prefixes": [
        "net"
    ]
}