cifs: cork the socket before a send and uncork it afterward

[~andy/linux] / fs / cifs / transport.c

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 766307b725bd4eecd330c787e6bcaf9020debcd1..8ff4c5f36702ccf7f7f9031b896a9517d530b828 100644 (file)
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -27,6 +27,7 @@
 #include <linux/net.h>
 #include <linux/delay.h>
 #include <linux/freezer.h>
+#include <linux/tcp.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 #include <linux/mempool.h>
@@ -247,12 +248,23 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
        int n_vec = rqst->rq_nvec;
        unsigned int smb_buf_length = get_rfc1002_length(iov[0].iov_base);
        size_t total_len;
+       struct socket *ssocket = server->ssocket;
+       int val = 1;
 
        cFYI(1, "Sending smb: smb_len=%u", smb_buf_length);
        dump_smb(iov[0].iov_base, iov[0].iov_len);
 
+       /* cork the socket */
+       kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
+                               (char *)&val, sizeof(val));
+
        rc = smb_send_kvec(server, iov, n_vec, &total_len);
 
+       /* uncork it */
+       val = 0;
+       kernel_setsockopt(ssocket, SOL_TCP, TCP_CORK,
+                               (char *)&val, sizeof(val));
+
        if ((total_len > 0) && (total_len != smb_buf_length + 4)) {
                cFYI(1, "partial send (wanted=%u sent=%zu): terminating "
                        "session", smb_buf_length + 4, total_len);