Documentation/*.md: add some options that we forgot to document.

[bup.git] / Documentation / bup-midx.md

diff --git a/Documentation/bup-midx.md b/Documentation/bup-midx.md
index 829a74a2e120404ca4133a23c461d3f0b4df6e9d..c216c89b325df63e894928d2ed64ea9fb9ccab81 100644 (file)
--- a/Documentation/bup-midx.md
+++ b/Documentation/bup-midx.md
@@ -35,6 +35,14 @@ requiring too much RAM.
     already exist.  This will result in the fastest backup
     performance, but may take a long time to run.
 
+--max-files
+:   maximum number of .idx files to open at a time.  You
+    can use this if you have an especially small number of file
+    descriptors available, so that midx can complete
+    (though possibly non-optimally) even if it can't open
+    all your .idx files at once.  The default value of this
+    option should be fine for most people.
+
 
 # EXAMPLE