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-rw-r--r--Documentation/device-mapper/cache-policies.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/device-mapper/cache-policies.txt b/Documentation/device-mapper/cache-policies.txt
index 731879f97b80..d7c440b444cc 100644
--- a/Documentation/device-mapper/cache-policies.txt
+++ b/Documentation/device-mapper/cache-policies.txt
@@ -53,6 +53,11 @@ since spindles tend to have good bandwidth. The io_tracker counts
contiguous I/Os to try to spot when the io is in one of these sequential
modes.
+cleaner
+-------
+
+The cleaner writes back all dirty blocks in a cache to decommission it.
+
Examples
========