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authorMinwoo Im <minwoo.im.dev@gmail.com>2019-04-07 17:19:38 +0900
committerJens Axboe <axboe@kernel.dk>2019-04-09 08:18:23 -0600
commit0d413829bd20d5563c2c3287479a7348810cb13f (patch)
tree35c38ae96414b81fa97f136c15cf869328aa835b /Documentation/block/null_blk.txt
parentb21e11c5c8311b8bf6923ff29d57f2a5f997e939 (diff)
block: null: Add documentation for "zone_nr_conv" param
zone_nr_conv module parameter was introduced by a commit ea2c18e1("null_blk: Add conventional zone configuration for zoned support"). This patch describes "zone_nr_conv" module parameter to the document. Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/block/null_blk.txt')
-rw-r--r--Documentation/block/null_blk.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt
index 4cad1024fff7..41f0a3d33bbd 100644
--- a/Documentation/block/null_blk.txt
+++ b/Documentation/block/null_blk.txt
@@ -93,3 +93,7 @@ zoned=[0/1]: Default: 0
zone_size=[MB]: Default: 256
Per zone size when exposed as a zoned block device. Must be a power of two.
+
+zone_nr_conv=[nr_conv]: Default: 0
+ The number of conventional zones to create when block device is zoned. If
+ zone_nr_conv >= nr_zones, it will be reduced to nr_zones - 1.