bcachefs: time_stats: shrink time_stat_buffer for better alignment

Darrick J. Wong · Kent Overstreet · commit be28368b2ccb · 2024-03-13T21:38:03.000-04:00
Shrink this percpu object by one array element so that the object size
becomes exactly 512 bytes.  This will lead to more efficient memory use,
hopefully.

Signed-off-by: Darrick J. Wong &lt;djwong@kernel.org&gt;
Signed-off-by: Kent Overstreet &lt;kent.overstreet@linux.dev&gt;
diff --git a/fs/bcachefs/time_stats.h b/fs/bcachefs/time_stats.h
@@ -64,7 +64,7 @@ struct time_stat_buffer {
 	struct time_stat_buffer_entry {
 		u64	start;
 		u64	end;
-	}		entries[32];
+	}		entries[31];
 };
 
 struct bch2_time_stats {
