[PATCH] block: add documentation for inflight
From: Steffen Maier <hidden>
Date: 2021-10-19 13:02:53
Also in:
linux-block, linux-doc, linux-s390, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted>
---
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@kernel.dk>, Nikanth Karthikesan <knikanth@suse.de> +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@microsoft.com>
--
2.27.0