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Subject[PATCH 2.4.0-pre8] Fix RPC over TCP hangs...
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Hi Linus,

It seems that the TCP code has morphed again, breaking the RPC over
tcp write_space() calls. Basically it seems that the current version
of the tcp code no longer allows us to specify that we'd like to wait
until a specific number of bytes are free in the buffer (udp is
unchanged).

The following patch allows us to work with the current TCP
write_space() API by instead reenabling the sending of partial
requests.

Cheers,
Trond


--- linux/net/sunrpc/xprt.c.orig Tue Jul 18 21:39:29 2000
+++ linux/net/sunrpc/xprt.c Wed Sep 6 17:11:03 2000
@@ -1037,7 +1037,7 @@
return;

/* Wait until we have enough socket memory */
- if (sock_wspace(sk) < min(sk->sndbuf,XPRT_MIN_WRITE_SPACE))
+ if (!sock_writeable(sk))
return;

spin_lock_bh(&xprt_sock_lock);
@@ -1212,9 +1212,6 @@
*/
while (1) {
xprt->write_space = 0;
- status = -ENOMEM;
- if (sock_wspace(xprt->inet) < req->rq_slen + SOCK_MIN_WRITE_SPACE)
- break;
status = xprt_sendmsg(xprt, req);

if (status < 0)
-
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