Document send_holes_without_birth_time

Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #8641

diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5
index 4a3ff1d49a1ea47daa1baf2e5b6526f76d44cf8c..be2810f5a9a4e68a0119de3a3bda893fe07d7c4a 100644 (file)
--- a/man/man5/zfs-module-parameters.5
+++ b/man/man5/zfs-module-parameters.5
@@ -110,11 +110,7 @@ Default value: \fB6\fR.
 \fBignore_hole_birth\fR (int)
 .ad
 .RS 12n
-When set, the hole_birth optimization will not be used, and all holes will
-always be sent on zfs send. Useful if you suspect your datasets are affected
-by a bug in hole_birth.
-.sp
-Use \fB1\fR for on (default) and \fB0\fR for off.
+This is an alias for \fBsend_holes_without_birth_time\fR.
 .RE
 
 .sp
@@ -374,6 +370,19 @@ angular velocity disk drive.
 Use \fB1\fR for yes (default) and \fB0\fR for no.
 .RE
 
+.sp
+.ne 2
+.na
+\fBsend_holes_without_birth_time\fR (int)
+.ad
+.RS 12n
+When set, the hole_birth optimization will not be used, and all holes will
+always be sent on zfs send. Useful if you suspect your datasets are affected
+by a bug in hole_birth.
+.sp
+Use \fB1\fR for on (default) and \fB0\fR for off.
+.RE
+
 .sp
 .ne 2
 .na