Add description on the usage of expedite_dmpg and
expedite_swapin.
Signed-off-by: Venkatraman S <svenk...@ti.com>
---
Documentation/ABI/testing/sysfs-block | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-block
b/Documentation/ABI/testing/sysfs-block
index c1eb41c..0fb9fef 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -206,3 +206,15 @@ Description:
when a discarded area is read the discard_zeroes_data
parameter will be set to one. Otherwise it will be 0 and
the result of reading a discarded area is undefined.
+
+What: /sys/block/<disk>/queue/expedite_demandpaging
+What: /sys/block/<disk>/queue/expedite_swapin
+Date: April 2012
+Contact: Venkatraman S <svenk...@ti.com>
+Description:
+ For latency improvements, some storage devices could
+ provide a mechanism for servicing demand paging and
+ swapin requests in a high priority manner. Setting
+ these flags to 1 would get the requests marked with
+ REQ_RW_DMPG or REQ_RW_SWAPIN to be moved to the front
+ of elevator queue.
--
1.7.10.rc2
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