Documentation: pack.compression: explain how to recompress

diff --git a/Documentation/config.txt b/Documentation/config.txt
index d82c0da2cf470dbfe7936762d4645b7509647177..ad81df33705d42b3ab6b63ef882cb5965d51ec8a 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1466,6 +1466,10 @@ pack.compression::
        not set,  defaults to -1, the zlib default, which is "a default
        compromise between speed and compression (currently equivalent
        to level 6)."
++
+Note that changing the compression level will not automatically recompress
+all existing objects. You can force recompression by passing the -F option
+to linkgit:git-repack[1].
 
 pack.deltaCacheSize::
        The maximum memory in bytes used for caching deltas in