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| author | Pavel Emelyanov <xemul@openvz.org> | 2008-03-21 23:58:52 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-21 23:58:52 +0100 |
| commit | 7512cbf6efc97644812f137527a54b8e92b6a90a (patch) | |
| tree | bf603e7ede2af1163c866bc04e540807d1a298c1 | |
| parent | [SCTP]: Fix build warnings with IPV6 disabled. (diff) | |
| download | linux-7512cbf6efc97644812f137527a54b8e92b6a90a.tar.xz linux-7512cbf6efc97644812f137527a54b8e92b6a90a.zip | |
[DLCI]: Fix tiny race between module unload and sock_ioctl.
This is a narrow pedantry :) but the dlci_ioctl_hook check and call
should not be parted with the mutex lock.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/socket.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/socket.c b/net/socket.c index b6d35cd72a50..9d3fbfbc8535 100644 --- a/net/socket.c +++ b/net/socket.c @@ -909,11 +909,10 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) if (!dlci_ioctl_hook) request_module("dlci"); - if (dlci_ioctl_hook) { - mutex_lock(&dlci_ioctl_mutex); + mutex_lock(&dlci_ioctl_mutex); + if (dlci_ioctl_hook) err = dlci_ioctl_hook(cmd, argp); - mutex_unlock(&dlci_ioctl_mutex); - } + mutex_unlock(&dlci_ioctl_mutex); break; default: err = sock->ops->ioctl(sock, cmd, arg); |