Commit 8bc2f7c6 authored by Eric Biggers's avatar Eric Biggers Committed by Jens Axboe
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docs: sysfs-block: document virt_boundary_mask 



/sys/block/<disk>/queue/virt_boundary_mask is completely undocumented.
Document it.

Reviewed-by: default avatarBart Van Assche <bvanassche@acm.org>
Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20211209003833.6396-7-ebiggers@kernel.org


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 11630104

Documentation/ABI/stable/sysfs-block

+12 −0
Original line number Diff line number Diff line
@@ -544,6 +544,18 @@ Description: 
		CONFIG_BLK_DEV_THROTTLING_LOW is enabled.





What:		/sys/block/<disk>/queue/virt_boundary_mask

Date:		April 2021

Contact:	linux-block@vger.kernel.org

Description:

		[RO] This file shows the I/O segment memory alignment mask for

		the block device.  I/O requests to this device will be split

		between segments wherever either the memory address of the end

		of the previous segment or the memory address of the beginning

		of the current segment is not aligned to virt_boundary_mask + 1

		bytes.





What:		/sys/block/<disk>/queue/wbt_lat_usec

Date:		November 2016

Contact:	linux-block@vger.kernel.org