diff options
Diffstat (limited to 'Documentation/device-mapper/cache-policies.txt')
| -rw-r--r-- | Documentation/device-mapper/cache-policies.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/device-mapper/cache-policies.txt b/Documentation/device-mapper/cache-policies.txt index d7c440b444c..df52a849957 100644 --- a/Documentation/device-mapper/cache-policies.txt +++ b/Documentation/device-mapper/cache-policies.txt @@ -30,8 +30,10 @@ multiqueue This policy is the default. -The multiqueue policy has two sets of 16 queues: one set for entries -waiting for the cache and another one for those in the cache. +The multiqueue policy has three sets of 16 queues: one set for entries +waiting for the cache and another two for those in the cache (a set for +clean entries and a set for dirty entries). + Cache entries in the queues are aged based on logical time. Entry into the cache is based on variable thresholds and queue selection is based on hit count on entry. The policy aims to take different cache miss |