X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=HOWTO;h=e544634009ef0907dbd2ad0345af45c5326008f9;hp=0b80a62368a88efa464704544bd8fb79696e0119;hb=8f4b9f2475a4524067b6a0662aff006783919922;hpb=43f466e667a8bcfc58c1c69b0897fe0345c34841

diff --git a/HOWTO b/HOWTO
index 0b80a623..e5446340 100644
--- a/HOWTO
+++ b/HOWTO
@@ -1093,11 +1093,29 @@ I/O type
 		**random**
 			Advise using **FADV_RANDOM**.
 
-.. option:: fadvise_stream=int
+.. option:: write_hint=str
 
-	Use :manpage:`posix_fadvise(2)` to advise the kernel what stream ID the
-	writes issued belong to. Only supported on Linux. Note, this option may
-	change going forward.
+	Use :manpage:`fcntl(2)` to advise the kernel what life time to expect
+	from a write. Only supported on Linux, as of version 4.13. Accepted
+	values are:
+
+		**none**
+			No particular life time associated with this file.
+
+		**short**
+			Data written to this file has a short life time.
+
+		**medium**
+			Data written to this file has a medium life time.
+
+		**long**
+			Data written to this file has a long life time.
+
+		**extreme**
+			Data written to this file has a very long life time.
+
+	The values are all relative to each other, and no absolute meaning
+	should be associated with them.
 
 .. option:: offset=int