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libdm: simplify dmstats formula.

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Since we check for stats for not being 0,
simplify the operation and use a single division.
This commit is contained in:
Zdenek Kabelac 2015-08-18 12:12:07 +02:00
parent ae4db9f302
commit ba94d0f144
1 changed files with 3 additions and 4 deletions
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7
libdm/libdm-stats.c
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@ -510,11 +510,10 @@ static uint64_t _nr_areas(uint64_t len, uint64_t step)
/* /*
* drivers/md/dm-stats.c::message_stats_create() * drivers/md/dm-stats.c::message_stats_create()
* A region may be sub-divided into areas with their own counters. * A region may be sub-divided into areas with their own counters.
* If step is non-zero, divide len into that many areas, otherwise * Any partial area at the end of the region is treated as an
* treat the entire region as a single area. Any partial area at the * additional complete area.
* end of the region is treated as an additional complete area.
*/ */
return (len / (step ? : len)) + !!(len % step); return (len + step - 1) / step;
} }
static uint64_t _nr_areas_region(struct dm_stats_region *region) static uint64_t _nr_areas_region(struct dm_stats_region *region)