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nbd: only set sndtimeo if we have a timeout set

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A user reported that he was getting immediate disconnects with my
sndtimeo patch applied.  This is because by default the OSS nbd client
doesn't set a timeout, so we end up setting the sndtimeo to 0, which of
course means we have send errors a lot.  Instead only set our sndtimeo
if the user specified a timeout, otherwise we'll just wait forever like
we did previously.

Fixes: dc88e34d69 ("nbd: set sk->sk_sndtimeo for our sockets")
Reported-by: Adam Borowski <[email protected]>
Signed-off-by: Josef Bacik <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Josef Bacik 2017-07-21 10:48:15 -04:00 • committed by Jens Axboe
commit a7ee8cf190
1 changed files with 5 additions and 2 deletions
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7
drivers/block/nbd.c
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@ -908,7 +908,8 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
continue;
}
sk_set_memalloc(sock->sk);
sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
if (nbd->tag_set.timeout)
sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
atomic_inc(&config->recv_threads);
refcount_inc(&nbd->config_refs);
old = nsock->sock;
@ -1077,7 +1078,9 @@ static int nbd_start_device(struct nbd_device *nbd)
return -ENOMEM;
}
sk_set_memalloc(config->socks[i]->sock->sk);
config->socks[i]->sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
if (nbd->tag_set.timeout)
config->socks[i]->sock->sk->sk_sndtimeo =
nbd->tag_set.timeout;
atomic_inc(&config->recv_threads);
refcount_inc(&nbd->config_refs);
INIT_WORK(&args->work, recv_work);