Complements v2.6.32 commit a9327cac440b ("Seperate read and write
statistics of in_flight requests") and commit 316d315bffa4 ("block:
Seperate read and write statistics of in_flight requests v2").
Signed-off-by: Steffen Maier <maier@xxxxxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-block | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
index a0ed87386639..b16b0c45a272 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -28,6 +28,22 @@ Description:
For more details refer Documentation/admin-guide/iostats.rst
+What: /sys/block/<disk>/inflight
+Date: October 2009
+Contact: Jens Axboe <axboe@xxxxxxxxx>, Nikanth Karthikesan <knikanth@xxxxxxx>
+Description:
+ Reports the number of I/O requests currently in progress
+ (pending / in flight) in a device driver. This can be less
+ than the number of requests queued in the block device queue.
+ The report contains 2 fields: one for read requests
+ and one for write requests.
+ The value type is unsigned int.
+ Cf. Documentation/block/stat.rst which contains a single value for
+ requests in flight.
+ This is related to nr_requests in Documentation/block/queue-sysfs.rst
+ and for SCSI device also its queue_depth.
+
+
What: /sys/block/<disk>/diskseq
Date: February 2021
Contact: Matteo Croce <mcroce@xxxxxxxxxxxxx>
--
2.27.0
