On 09/28/2012 08:27 PM, Fengguang Wu wrote:
On Tue, Sep 25, 2012 at 02:18:20AM +0530, Srivatsa S. Bhat wrote:
From: Srivatsa S. Bhat <srivatsa.b...@linux.vnet.ibm.com>
The CPU hotplug callback related to writeback calls writeback_set_ratelimit()
during every state change in the hotplug sequence. This is unnecessary
since num_online_cpus() changes only once during the entire hotplug operation.
So invoke the function only once per hotplug, thereby avoiding the
unnecessary repetition of those costly calculations.
Signed-off-by: Srivatsa S. Bhat <srivatsa.b...@linux.vnet.ibm.com>
---
Looks good to me. I'll include it in the writeback tree.
Hi Fengguang,
Could you tell me when inode->i_state & I_DIRTY will be set? thanks.
Regards,
Chen
Thanks,
Fengguang
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