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authorMike Christie <michaelc@cs.wisc.edu>2010-02-11 01:51:47 +0300
committerJames Bottomley <James.Bottomley@suse.de>2010-02-17 22:40:16 +0300
commitb64e77f70b8c11766e967e3485331a9e6ef01390 (patch)
treee0c0c6c935b2d7623d962d7f5984ecfc1420f8d2 /drivers/scsi/iscsi_tcp.c
parent9f9127fd0cfac1ccbcf4a9456b3d36bc6971355e (diff)
downloadlinux-b64e77f70b8c11766e967e3485331a9e6ef01390.tar.xz
[SCSI] iscsi_tcp: wake xmit thread when killing session
If the connection is bad, then the xmit thread could end up waiting a long time (up to sendtmeo seconds) in tcp_sendpage. This patch has us set the sk_error and wake up the xmit thread so we can quickly fail. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/iscsi_tcp.c')
-rw-r--r--drivers/scsi/iscsi_tcp.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 517da3fd89d3..8a89ba900588 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -584,9 +584,10 @@ static void iscsi_sw_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
struct iscsi_conn *conn = cls_conn->dd_data;
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct iscsi_sw_tcp_conn *tcp_sw_conn = tcp_conn->dd_data;
+ struct socket *sock = tcp_sw_conn->sock;
/* userspace may have goofed up and not bound us */
- if (!tcp_sw_conn->sock)
+ if (!sock)
return;
/*
* Make sure our recv side is stopped.
@@ -597,6 +598,11 @@ static void iscsi_sw_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
write_unlock_bh(&tcp_sw_conn->sock->sk->sk_callback_lock);
+ if (sock->sk->sk_sleep && waitqueue_active(sock->sk->sk_sleep)) {
+ sock->sk->sk_err = EIO;
+ wake_up_interruptible(sock->sk->sk_sleep);
+ }
+
iscsi_conn_stop(cls_conn, flag);
iscsi_sw_tcp_release_conn(conn);
}