tree 0433591d9d9124ef559fc54f2f71eb7027f0a56c
parent 3bdad1e40d11aad31f2322f21e943c31ef20d9da
author Kent Overstreet <kmo@daterainc.com> 1384292950 -0800
committer Kent Overstreet <kmo@daterainc.com> 1389215114 -0800

bcache: Improve bucket_prio() calculation

When deciding what order to reuse buckets we take into account both the bucket's
priority (which indicates lru order) and also the amount of live data in that
bucket. The way they were scaled together wasn't as correct as it could be...
this patch improves and documents it.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>