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authorYufen Yu <yuyufen@huawei.com>2020-07-03 02:13:23 -0400
committerJens Axboe <axboe@kernel.dk>2020-07-06 08:07:01 -0600
commit65752aef0a407e1ef17ec78a7fc31ba4e0b360f9 (patch)
treea632633bc93b3c8f5c891e6446364fea0ec33387 /Documentation
parent3197d48a7c04eee3e50bd54ef7e17e383b8a919e (diff)
docs: block: update and fix tiny error for bfq
The max value of blkio.bfq.weight is 1000, rather than 10000. And 'weights' have been remove from /sys/block/XXX/queue/iosched. Signed-off-by: Yufen Yu <yuyufen@huawei.com> Acked-by: Paolo Valente <paolo.valente@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/block/bfq-iosched.rst9
1 files changed, 1 insertions, 8 deletions
diff --git a/Documentation/block/bfq-iosched.rst b/Documentation/block/bfq-iosched.rst
index 0d237d402860..19d4d1570cee 100644
--- a/Documentation/block/bfq-iosched.rst
+++ b/Documentation/block/bfq-iosched.rst
@@ -492,13 +492,6 @@ set max_budget to higher values than those to which BFQ would have set
it with auto-tuning. An alternative way to achieve this goal is to
just increase the value of timeout_sync, leaving max_budget equal to 0.
-weights
--------
-
-Read-only parameter, used to show the weights of the currently active
-BFQ queues.
-
-
4. Group scheduling with BFQ
============================
@@ -566,7 +559,7 @@ Parameters to set
For each group, there is only the following parameter to set.
weight (namely blkio.bfq.weight or io.bfq-weight): the weight of the
-group inside its parent. Available values: 1..10000 (default 100). The
+group inside its parent. Available values: 1..1000 (default 100). The
linear mapping between ioprio and weights, described at the beginning
of the tunable section, is still valid, but all weights higher than
IOPRIO_BE_NR*10 are mapped to ioprio 0.