Add description on the usage of expedite_dmpg and expedite_swapin. Signed-off-by: Venkatraman S <svenkatr@xxxxxx> --- 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 <svenkatr@xxxxxx> +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 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
