Improve documentation for end_fsync

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/HOWTO b/HOWTO
index 014b7f3..d5be376 100644
--- a/HOWTO
+++ b/HOWTO
@@ -704,7 +704,7 @@
 		and is large enough for the specified write phase, nothing
 		will be done.
 
-end_fsync=bool	If true, fsync file contents when the job exits.
+end_fsync=bool	If true, fsync file contents when a write stage has completed.
 
 fsync_on_close=bool	If true, fio will fsync() a dirty file on close.
 		This differs from end_fsync in that it will happen on every
diff --git a/fio.1 b/fio.1
index 5b65e07..2f7728a 100644
--- a/fio.1
+++ b/fio.1
@@ -561,7 +561,7 @@
 If writing, setup the file first and do overwrites.  Default: false.
 .TP
 .BI end_fsync \fR=\fPbool
-Sync file contents when job exits.  Default: false.
+Sync file contents when a write stage has completed.  Default: false.
 .TP
 .BI fsync_on_close \fR=\fPbool
 If true, sync file contents on close.  This differs from \fBend_fsync\fR in that