Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/procfs-diskstats b/Documentation/ABI/testing/procfs-diskstats
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+What:		/proc/diskstats
+Date:		February 2008
+Contact:	Jerome Marchand <jmarchan@redhat.com>
+Description:
+		The /proc/diskstats file displays the I/O statistics
+		of block devices. Each line contains the following 14
+		fields:
+
+		==  ===================================
+		 1  major number
+		 2  minor number
+		 3  device name
+		 4  reads completed successfully
+		 5  reads merged
+		 6  sectors read
+		 7  time spent reading (ms)
+		 8  writes completed
+		 9  writes merged
+		10  sectors written
+		11  time spent writing (ms)
+		12  I/Os currently in progress
+		13  time spent doing I/Os (ms)
+		14  weighted time spent doing I/Os (ms)
+		==  ===================================
+
+		Kernel 4.18+ appends four more fields for discard
+		tracking putting the total at 18:
+
+		==  ===================================
+		15  discards completed successfully
+		16  discards merged
+		17  sectors discarded
+		18  time spent discarding
+		==  ===================================
+
+		Kernel 5.5+ appends two more fields for flush requests:
+
+		==  =====================================
+		19  flush requests completed successfully
+		20  time spent flushing
+		==  =====================================
+
+		For more details refer to Documentation/admin-guide/iostats.rst