mean and variance: Add a missing include

abs() is in math.h

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/mean_and_variance.h b/fs/bcachefs/mean_and_variance.h
index 6dd4c050e78a1bd56b13165f0a68d99439df2f5d..647505010b3974b713823f96ddeab6a6aa8fe5df 100644 (file)
--- a/fs/bcachefs/mean_and_variance.h
+++ b/fs/bcachefs/mean_and_variance.h
@@ -4,6 +4,7 @@
 
 #include <linux/types.h>
 #include <linux/limits.h>
+#include <linux/math.h>
 #include <linux/math64.h>
 
 #define SQRT_U64_MAX 4294967295ULL