diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2026-07-10 18:37:15 +0200 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2026-07-10 18:40:27 +0200 |
| commit | 386df1a57b631c456d14f857cb0c0c2e11c16bef (patch) | |
| tree | ebca59da99310d9f074a5d3ee7b167e31c6bf145 /drivers | |
| parent | 1917eb2db750ecbdf710f79a8042eaa545a063c7 (diff) | |
dm-stats: fix dm_jiffies_to_msec64
There were wrong calculations in dm_jiffies_to_msec64 that produced
incorrect output when HZ was different from 1000. This commit fixes them.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Assisted-by: Claude:claude-opus-4-6
Fixes: fd2ed4d25270 ("dm: add statistics support")
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-stats.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index e06374a3329e..5df710061a11 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -840,10 +840,10 @@ static unsigned long long dm_jiffies_to_msec64(struct dm_stat *s, unsigned long result = jiffies_to_msecs(j & 0x3fffff); if (j >= 1 << 22) { mult = jiffies_to_msecs(1 << 22); - result += (unsigned long long)mult * (unsigned long long)jiffies_to_msecs((j >> 22) & 0x3fffff); + result += (unsigned long long)mult * ((j >> 22) & 0x3fffff); } if (j >= 1ULL << 44) - result += (unsigned long long)mult * (unsigned long long)mult * (unsigned long long)jiffies_to_msecs(j >> 44); + result += (unsigned long long)mult * (unsigned long long)(1 << 22) * (j >> 44); return result; } |