X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=Documentation%2FABI%2Ftesting%2Fsysfs-block;h=a0ed87386639bb35ceb16b6f6511f198f95549ca;hb=c6c3c5704ba70820f6b632982abde06661b7222a;hp=e34cdeeeb9d420a673f5236ff59ec99242630a40;hpb=a0881596757fbef5781dc3cde5e8393dc2eb7ae6;p=linux-2.6-microblaze.git

diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
index e34cdeeeb9d4..a0ed87386639 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -28,6 +28,18 @@ Description:
 		For more details refer Documentation/admin-guide/iostats.rst
 
 
+What:		/sys/block/<disk>/diskseq
+Date:		February 2021
+Contact:	Matteo Croce <mcroce@microsoft.com>
+Description:
+		The /sys/block/<disk>/diskseq files reports the disk
+		sequence number, which is a monotonically increasing
+		number assigned to every drive.
+		Some devices, like the loop device, refresh such number
+		every time the backing file is changed.
+		The value type is 64 bit unsigned.
+
+
 What:		/sys/block/<disk>/<part>/stat
 Date:		February 2008
 Contact:	Jerome Marchand <jmarchan@redhat.com>