doc/cindex: point no-fsync,dangerous to -index(1)

There's no point in duplicating --no-fsync documentation across
manpages.  --dangerous can be useful for reducing SSD wear, so
add a pointer to it as well.

diff --git a/Documentation/public-inbox-cindex.pod b/Documentation/public-inbox-cindex.pod
index d2d5dadce88e88f6bda9dad94b19757fd14d9866..3ff394be5cb60dda2d5af9425ec1961bb288bfc5 100644 (file)
--- a/Documentation/public-inbox-cindex.pod
+++ b/Documentation/public-inbox-cindex.pod
@@ -64,12 +64,7 @@ Use this after L<git-gc(1)> (or L<git-prune(1)>).
 
 =item --no-fsync
 
-Disables L<fsync(2)> and L<fdatasync(2)> operations on SQLite
-and Xapian.  This is only effective with Xapian 1.4+.  This is
-primarily intended for systems with low RAM and the small
-(default) C<--batch-size=1m>.  Users of large C<--batch-size>
-may even find disabling L<fdatasync(2)> causes too much dirty
-data to accumulate, resulting on latency spikes from writeback.
+=item --dangerous
 
 =item --max-size SIZE