Re: [PATCH 3/6] staging: android/lowmemorykiller: Don't grab tasklist_lock

On Mon, Feb 06, 2012 at 08:29:41PM +0400, Anton Vorontsov wrote:

Grabbing tasklist_lock has its disadvantages, i.e. it blocks process creation and destruction. If there are lots of processes, blocking doesn't sound as a great idea.

For LMK, it is sufficient to surround tasks list traverse with rcu_read_{,un}lock().

...

From now on using force_sig() is not safe, as it can race with an

already exiting task, so we use send_sig() now. As a downside, it won't kill PID namespace init processes, but that's not what we want anyway.

Suggested-by: Oleg Nesterov oleg@redhat.com Signed-off-by: Anton Vorontsov anton.vorontsov@linaro.org

Are these last 4 patches independant of the first 2 and can be taken through the staging tree now?

thanks,

greg k-h