From: Gaël Fenet-Garde <gael.fenet.garde@gmail.com>
Date: Wed, 17 Jun 2015 10:03:24 +0000 (+0200)
Subject: doc: Purpose of a cache pool
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doc: Purpose of a cache pool

Completing the description of the cache purpose.
Fixes : #11096
Signed-off-by: Gael Fenet-Garde <gael.fenet.garde@gmail.com>
---

diff --git a/doc/dev/cache-pool.rst b/doc/dev/cache-pool.rst
index f44cbd99ac4a..3549ba81dfcd 100644
--- a/doc/dev/cache-pool.rst
+++ b/doc/dev/cache-pool.rst
@@ -5,7 +5,7 @@ Purpose
 -------
 
 Use a pool of fast storage devices (probably SSDs) and use it as a
-cache for an existing larger pool.
+cache for an existing slower and larger pool.
 
 Use a replicated pool as a front-end to service most I/O, and destage
 cold data to a separate erasure coded pool that does not currently (and