[PATCH] mm: remove unnecessary rcu_lock/unlock around radix_tree_tagged lockless function. The function queue_delayed_work is already protected with interrupts disabled, hence no need to add rcu_lock/unlock.

[Dave Chinner]

On Mon, Sep 26, 2016 at 12:50:06AM +0530, Sudip Midya wrote:
> Signed-off-by: Sudip Midya <midya.sudip at gmail.com>
> ---

Patch format still needs work. The subject line should be short, the
patch description should be in the body of the message, not the
subject. Also, this is not a patch for the "mm" subsystem.

Addressing the reason given for the change: the RCU lock is not
actually protecting queue_delayed_work(), so while the code change
may be OK, the reason given for removing it is not. So why is it
safe to remove the rcu_read_lock()?

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com