From: Namhyung Kim <namhyung@gmail.com>
Date: Sat, 28 May 2011 12:44:46 +0000 (+0200)
Subject: nbd: pass MSG_* flags to kernel_recvmsg()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=35fbf5bcf497d6ddbe7b6478141e7526d1474ff5;p=linux-beck.git

nbd: pass MSG_* flags to kernel_recvmsg()

Unlike kernel_sendmsg(), kernel_recvmsg() requires passing flags explicitly
via last parameter instead of struct msghdr.msg_flags. Therefore calls to
sock_xmit(lo, 0, ..., MSG_WAITALL) have not been processed properly by tcp
layer wrt. the flag. Fix it.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
---

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index e6fc716aca45..1df3bfe5225b 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -192,7 +192,8 @@ static int sock_xmit(struct nbd_device *lo, int send, void *buf, int size,
 			if (lo->xmit_timeout)
 				del_timer_sync(&ti);
 		} else
-			result = kernel_recvmsg(sock, &msg, &iov, 1, size, 0);
+			result = kernel_recvmsg(sock, &msg, &iov, 1, size,
+						msg.msg_flags);
 
 		if (signal_pending(current)) {
 			siginfo_t info;