From 7b5f80123104d8dd68d3348e20d9b56fe3a9ee77 Mon Sep 17 00:00:00 2001 From: Steffen Maier Date: Tue, 19 Oct 2021 15:02:30 +0200 Subject: block: add documentation for inflight 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 Reviewed-by: Jens Axboe Link: https://lore.kernel.org/r/20211019130230.77594-1-maier@linux.ibm.com Signed-off-by: Jonathan Corbet --- Documentation/ABI/testing/sysfs-block | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'Documentation/ABI') 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//inflight +Date: October 2009 +Contact: Jens Axboe , Nikanth Karthikesan +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//diskseq Date: February 2021 Contact: Matteo Croce -- cgit v1.2.3