6.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kent Overstreet <kent.overstreet@xxxxxxxxx>
commit 7b508b323b2ec45be59769bd4e4aeba729c52cf6 upstream.
This fixes spurious outliers in the frequency stats.
Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/bcachefs/util.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/fs/bcachefs/util.c
+++ b/fs/bcachefs/util.c
@@ -362,14 +362,15 @@ static inline void bch2_time_stats_updat
bch2_quantiles_update(&stats->quantiles, duration);
}
- if (time_after64(end, stats->last_event)) {
+ if (stats->last_event && time_after64(end, stats->last_event)) {
freq = end - stats->last_event;
mean_and_variance_update(&stats->freq_stats, freq);
mean_and_variance_weighted_update(&stats->freq_stats_weighted, freq);
stats->max_freq = max(stats->max_freq, freq);
stats->min_freq = min(stats->min_freq, freq);
- stats->last_event = end;
}
+
+ stats->last_event = end;
}
static noinline void bch2_time_stats_clear_buffer(struct bch2_time_stats *stats,
