• Hou Pu's avatar
    nbd: restore default timeout when setting it to zero · acb19e17
    Hou Pu authored
    If we configured io timeout of nbd0 to 100s. Later after we
    finished using it, we configured nbd0 again and set the io
    timeout to 0. We expect it would timeout after 30 seconds
    and keep retry. But in fact we could not change the timeout
    when we set it to 0. the timeout is still the original 100s.
    
    So change the timeout to default 30s when we set it to zero.
    It also behaves same as commit 2da22da5 ("nbd: fix zero
    cmd timeout handling v2").
    
    It becomes more important if we were reconfigure a nbd device
    and the io timeout it set to zero. Because it could take 30s
    to detect the new socket and thus io could be completed more
    quickly compared to 100s.
    Signed-off-by: default avatarHou Pu <houpu@bytedance.com>
    Reviewed-by: default avatarJosef Bacik <josef@toxicpanda.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    acb19e17
nbd.c 61.1 KB