diff options
| author | Masato Suzuki <masato.suzuki@wdc.com> | 2018-10-30 10:14:05 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-07 23:41:50 +0300 |
| commit | ea2c18e1044e9ed8f780c965c50432060ab0e355 (patch) | |
| tree | 0dc4b8f9ffc8593df1e4f788d203ba882e3f324f /drivers/block/null_blk_main.c | |
| parent | 85758777c2a227fd1541b6dd122a08ab79c347ce (diff) | |
| download | linux-ea2c18e1044e9ed8f780c965c50432060ab0e355.tar.xz | |
null_blk: Add conventional zone configuration for zoned support
Allow the creation of conventional zones by adding the zone_nr_conv
configuration attribute. This new attribute is used only for zoned devices
and indicates the number of conventional zones to create. The default value
is 0. Since host-managed zoned block devices must always have at least one
sequential zone, if the value of zone_nr_conv is larger than or equal to
the total number of zones of the device nr_zones, zone_nr_conv is
automatically changed to nr_zones - 1.
Reviewed-by: Matias Bjorling <matias.bjorling@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Masato Suzuki <masato.suzuki@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/null_blk_main.c')
| -rw-r--r-- | drivers/block/null_blk_main.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 09339203dfba..9c045bee0985 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -188,6 +188,10 @@ static unsigned long g_zone_size = 256; module_param_named(zone_size, g_zone_size, ulong, S_IRUGO); MODULE_PARM_DESC(zone_size, "Zone size in MB when block device is zoned. Must be power-of-two: Default: 256"); +static unsigned int g_zone_nr_conv; +module_param_named(zone_nr_conv, g_zone_nr_conv, uint, 0444); +MODULE_PARM_DESC(zone_nr_conv, "Number of conventional zones when block device is zoned. Default: 0"); + static struct nullb_device *null_alloc_dev(void); static void null_free_dev(struct nullb_device *dev); static void null_del_dev(struct nullb *nullb); @@ -293,6 +297,7 @@ NULLB_DEVICE_ATTR(mbps, uint); NULLB_DEVICE_ATTR(cache_size, ulong); NULLB_DEVICE_ATTR(zoned, bool); NULLB_DEVICE_ATTR(zone_size, ulong); +NULLB_DEVICE_ATTR(zone_nr_conv, uint); static ssize_t nullb_device_power_show(struct config_item *item, char *page) { @@ -407,6 +412,7 @@ static struct configfs_attribute *nullb_device_attrs[] = { &nullb_device_attr_badblocks, &nullb_device_attr_zoned, &nullb_device_attr_zone_size, + &nullb_device_attr_zone_nr_conv, NULL, }; @@ -520,6 +526,7 @@ static struct nullb_device *null_alloc_dev(void) dev->use_per_node_hctx = g_use_per_node_hctx; dev->zoned = g_zoned; dev->zone_size = g_zone_size; + dev->zone_nr_conv = g_zone_nr_conv; return dev; } |