[PATCH v2 4/8] doc: fix unit of zone_reset_threshold and relation to other option

[Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>]

The zone_reset_threshold option uses the 'sectors with data' accounting
then it was described to have 'logical block' as its unit. However, the
accounting was implement with 'byte' unit. Fix the description of the
option.

Also, the zone_reset_threshold option works together with the
zone_reset_frequency option. Describe this relation also.

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
---
 HOWTO.rst | 7 ++++---
 fio.1     | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/HOWTO.rst b/HOWTO.rst
index 17caaf5d..d08f8a18 100644
--- a/HOWTO.rst
+++ b/HOWTO.rst
@@ -1085,9 +1085,10 @@ Target file/device
 
 .. option:: zone_reset_threshold=float
 
-	A number between zero and one that indicates the ratio of logical
-	blocks with data to the total number of logical blocks in the test
-	above which zones should be reset periodically.
+	A number between zero and one that indicates the ratio of written bytes
+	to the total size of the zones with write pointers in the IO range. When
+	current ratio is above this ratio, zones are reset periodically as
+	:option:`zone_reset_frequency` specifies.
 
 .. option:: zone_reset_frequency=float
 
diff --git a/fio.1 b/fio.1
index 527b3d46..54d2c403 100644
--- a/fio.1
+++ b/fio.1
@@ -854,9 +854,10 @@ of the zoned block device in use, thus allowing the option \fBmax_open_zones\fR
 value to be larger than the device reported limit. Default: false.
 .TP
 .BI zone_reset_threshold \fR=\fPfloat
-A number between zero and one that indicates the ratio of logical blocks with
-data to the total number of logical blocks in the test above which zones
-should be reset periodically.
+A number between zero and one that indicates the ratio of written bytes to the
+total size of the zones with write pointers in the IO range. When current ratio
+is above this ratio, zones are reset periodically as \fBzone_reset_frequency\fR
+specifies.
 .TP
 .BI zone_reset_frequency \fR=\fPfloat
 A number between zero and one that indicates how often a zone reset should be
-- 
2.38.1