Re: [PATCH] Remove unused member from nsproxy

[Cedric Le Goater]

Pavel Emelyanov wrote:
> The nslock spinlock is not used in the kernel at all. 

it's also useless now that you have put some RCU rules around it.
right ? 

C.

> Remove it.
> Signed-off-by: Pavel Emelyanov <xemul@xxxxxxxxxx>
> 
> ---
> 
> diff --git a/include/linux/init_task.h b/include/linux/init_task.h
> index a3f2541..cae35b6 100644
> --- a/include/linux/init_task.h
> +++ b/include/linux/init_task.h
> @@ -73,7 +73,6 @@ extern struct nsproxy init_nsproxy;
>  #define INIT_NSPROXY(nsproxy) {						\
>  	.pid_ns		= &init_pid_ns,					\
>  	.count		= ATOMIC_INIT(1),				\
> -	.nslock		= __SPIN_LOCK_UNLOCKED(nsproxy.nslock),		\
>  	.uts_ns		= &init_uts_ns,					\
>  	.mnt_ns		= NULL,						\
>  	INIT_NET_NS(net_ns)                                             \
> diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
> index 4d564d8..0e66b57 100644
> --- a/include/linux/nsproxy.h
> +++ b/include/linux/nsproxy.h
> @@ -23,7 +23,6 @@ struct pid_namespace;
>   */
>  struct nsproxy {
>  	atomic_t count;
> -	spinlock_t nslock;
>  	struct uts_namespace *uts_ns;
>  	struct ipc_namespace *ipc_ns;
>  	struct mnt_namespace *mnt_ns;
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