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fs: dlm: set subclass for othercon sock_mutex

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This patch sets the lockdep subclass for the othercon socket mutex. In
various places the connection socket mutex is held while locking the
othercon socket mutex. This patch will remove lockdep warnings when such
case occurs.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2021-03-01 17:05:11 -05:00 committed by David Teigland
parent b30a624f50
commit e9a470acd9
1 changed files with 2 additions and 1 deletions
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3
fs/dlm/lowcomms.c
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@ -934,13 +934,14 @@ static int accept_from_sock(struct listen_connection *con)
goto accept_err;
}
lockdep_set_subclass(&othercon->sock_mutex, 1);
newcon->othercon = othercon;
} else {
/* close other sock con if we have something new */
close_connection(othercon, false, true, false);
}
mutex_lock_nested(&othercon->sock_mutex, 1);
mutex_lock(&othercon->sock_mutex);
add_sock(newsock, othercon);
addcon = othercon;
mutex_unlock(&othercon->sock_mutex);