nbd: Timeouts are not user requested disconnects
It may be useful to know in the client that a connection timed out. The
current code returns success for a timeout.
This patch reports the error code -ETIMEDOUT for a timeout.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 438f4dc5..2e14e51 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -57,6 +57,7 @@
int blksize;
loff_t bytesize;
int xmit_timeout;
+ bool timedout;
bool disconnect; /* a disconnect has been requested by user */
struct timer_list timeout_timer;
@@ -154,10 +155,9 @@
if (list_empty(&nbd->queue_head))
return;
- nbd->disconnect = true;
-
spin_lock_irqsave(&nbd->sock_lock, flags);
+ nbd->timedout = true;
if (nbd->sock)
kernel_sock_shutdown(nbd->sock, SHUT_RDWR);
@@ -754,7 +754,10 @@
if (max_part > 0)
blkdev_reread_part(bdev);
if (nbd->disconnect) /* user requested, ignore socket errors */
- return 0;
+ error = 0;
+ if (nbd->timedout)
+ error = -ETIMEDOUT;
+
return error;
}