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-rw-r--r--fs/bcachefs/mean_and_variance.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/bcachefs/mean_and_variance.h b/fs/bcachefs/mean_and_variance.h
index 647505010b39..b2be565bb8f2 100644
--- a/fs/bcachefs/mean_and_variance.h
+++ b/fs/bcachefs/mean_and_variance.h
@@ -12,9 +12,12 @@
/*
* u128_u: u128 user mode, because not all architectures support a real int128
* type
+ *
+ * We don't use this version in userspace, because in userspace we link with
+ * Rust and rustc has issues with u128.
*/
-#ifdef __SIZEOF_INT128__
+#if defined(__SIZEOF_INT128__) && defined(__KERNEL__)
typedef struct {
unsigned __int128 v;