X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=2a70b7c629b6d6470625ac98e02dad555571f1ed;hp=f36d4a77908502497697f8fa47b732ebc2b2c158;hb=97bb54c9606c;hpb=63d9a037fcf18ca535a95be2aabd6c1b304d7151

diff --git a/HOWTO b/HOWTO
index f36d4a77..2a70b7c6 100644
--- a/HOWTO
+++ b/HOWTO
@@ -947,7 +947,7 @@ I/O type
 .. option:: direct=bool
 
 	If value is true, use non-buffered I/O. This is usually O_DIRECT. Note that
-	ZFS on Solaris doesn't support direct I/O.  On Windows the synchronous
+	OpenBSD and ZFS on Solaris don't support direct I/O.  On Windows the synchronous
 	ioengines don't support direct I/O.  Default: false.
 
 .. option:: atomic=bool
@@ -1791,7 +1791,9 @@ I/O engine
 		**external**
 			Prefix to specify loading an external I/O engine object file. Append
 			the engine filename, e.g. ``ioengine=external:/tmp/foo.o`` to load
-			ioengine :file:`foo.o` in :file:`/tmp`.
+			ioengine :file:`foo.o` in :file:`/tmp`. The path can be either
+			absolute or relative. See :file:`engines/skeleton_external.c` for
+			details of writing an external I/O engine.
 
 
 I/O engine specific parameters