dev-manual: disk-space: improve wording for obsolete sstate cache files

Replace "duplicate" by "obsolete", more appropriate.
"duplicate" probably comes from the "--remove-duplicated"
option of the sstate-cache-management.sh script.

Improve other sentences too.

(From yocto-docs rev: 20206debecac0848dc18765846b990ac994209ec)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Reported-by: Richard Purdie <richard.purdie@linuxfoundation.org>
CC: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/documentation/dev-manual/disk-space.rst b/documentation/dev-manual/disk-space.rst
index a84bef4511..6d1638a302 100644
--- a/documentation/dev-manual/disk-space.rst
+++ b/documentation/dev-manual/disk-space.rst
@@ -23,12 +23,12 @@ final disk usage of 22 Gbytes instead of &MIN_DISK_SPACE; Gbytes. However,
 &MIN_DISK_SPACE_RM_WORK; Gbytes of initial free disk space are still needed to
 create temporary files before they can be deleted.
 
-Purging Duplicate Shared State Cache Files
-==========================================
+Purging Obsolete Shared State Cache Files
+=========================================
 
 After multiple build iterations, the Shared State (sstate) cache can contain
-duplicate cache files for a given package, consuming a substantial amount of
-disk space. However, only the most recent cache files are likeky to be reusable.
+multiple cache files for a given package, consuming a substantial amount of
+disk space. However, only the most recent ones are likely to be reused.
 
 The following command is a quick way to purge all the cache files which
 haven't been used for a least a specified number of days::