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null_blk: cleanup zoned mode initialization

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To avoid potential compilation problems, replaced the badly written
MB_TO_SECTS() macro (missing parenthesis around the argument use) with
the inline function mb_to_sects(). And while at it, simplify the
calculation of the total number of zones of the device using the
round_up() macro.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2021-01-29 23:47:25 +09:00 committed by Jens Axboe
parent e2579c76fb
commit cd92cdb9c8
1 changed files with 9 additions and 7 deletions
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16
drivers/block/null_blk/zoned.c
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@ -6,7 +6,10 @@
#define CREATE_TRACE_POINTS
#include "trace.h"
#define MB_TO_SECTS(mb) (((sector_t)mb * SZ_1M) >> SECTOR_SHIFT)
static inline sector_t mb_to_sects(unsigned long mb)
{
return ((sector_t)mb * SZ_1M) >> SECTOR_SHIFT;
}
static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect)
{
@ -77,12 +80,11 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q)
return -EINVAL;
}
zone_capacity_sects = MB_TO_SECTS(dev->zone_capacity);
dev_capacity_sects = MB_TO_SECTS(dev->size);
dev->zone_size_sects = MB_TO_SECTS(dev->zone_size);
dev->nr_zones = dev_capacity_sects >> ilog2(dev->zone_size_sects);
if (dev_capacity_sects & (dev->zone_size_sects - 1))
dev->nr_zones++;
zone_capacity_sects = mb_to_sects(dev->zone_capacity);
dev_capacity_sects = mb_to_sects(dev->size);
dev->zone_size_sects = mb_to_sects(dev->zone_size);
dev->nr_zones = round_up(dev_capacity_sects, dev->zone_size_sects)
>> ilog2(dev->zone_size_sects);
dev->zones = kvmalloc_array(dev->nr_zones, sizeof(struct nullb_zone),
GFP_KERNEL | __GFP_ZERO);