kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-31 05:15:34 +00:00
Code Issues Releases Packages Activity
linux/mm/page-writeback.c
Srivatsa S. Bhat 2f60d628ff CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug 
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.bhat@linux.vnet.ibm.com>
2012-09-28 20:27:49 +08:00

2277 lines
69 KiB
Raw Blame History