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net: change netdev_unregister_timeout_secs min value to 1

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netdev_unregister_timeout_secs=0 can lead to printing the
"waiting for dev to become free" message every jiffy.
This is too frequent and unnecessary.
Set the min value to 1 second.

Also fix the merge issue introduced by
"net: make unregister netdev warning timeout configurable":
it changed "refcnt != 1" to "refcnt".

Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Fixes: 5aa3afe107 ("net: make unregister netdev warning timeout configurable")
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Vyukov
2021-03-25 15:52:45 +01:00
committed by David S. Miller
parent b01483a81a
commit 6c996e1994
3 changed files with 3 additions and 3 deletions
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2
Documentation/admin-guide/sysctl/net.rst
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@@ -320,7 +320,7 @@ waiting for a network device refcount to drop to 0 during device
unregistration. A lower value may be useful during bisection to detect
a leaked reference faster. A larger value may be useful to prevent false
warnings on slow/loaded systems.
Default value is 10, minimum 0, maximum 3600.
Default value is 10, minimum 1, maximum 3600.
optmem_max
----------