[PATCH 29.5/32] blk-throttle: add throtl_qnode for dispatch fairness
Vivek Goyal
vgoyal at redhat.com
Mon May 6 16:00:06 UTC 2013
On Fri, May 03, 2013 at 05:50:44PM -0700, Tejun Heo wrote:
[..]
> + * qnode_on_self is used when bios are directly queued to this
> + * throtl_grp so that local bios compete fairly with bios
> + * dispatched from children. qnode_on_parent is used when bios are
> + * dispatched from this throtl_grp into its parent and will compete
> + * with the sibling qnode_on_parents and the parent's
> + * qnode_on_self.
> + */
> + struct throtl_qnode qnode_on_self;
> + struct throtl_qnode qnode_on_parent;
Do we need one throtl_qnode for each IO dir (read/write) so that we can
queue up the right direction throtl_node in right sq->queued[rw].
Thanks
Vivek
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