From 8471134328b646f4ba5b9b8de32e8e55f6ed3f2b Mon Sep 17 00:00:00 2001
From: Zach Brown <zab@versity.com>
Date: Wed, 23 Mar 2016 14:00:07 -0700
Subject: [PATCH] Add trivial set_bit_le in bitops.h

We're going to need to start setting bloom filters bits in mkfs so we'll
add this trivial inline.  It might grow later.

Signed-off-by: Zach Brown <zab@versity.com>
---
 utils/src/bitops.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 utils/src/bitops.h

diff --git a/utils/src/bitops.h b/utils/src/bitops.h
new file mode 100644
index 00000000..dfe46a1c
--- /dev/null
+++ b/utils/src/bitops.h
@@ -0,0 +1,20 @@
+#ifndef _BITOPS_H_
+#define _BITOPS_H_
+
+#define BITS_PER_LONG (sizeof(long) * 8)
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define BITOP_LE_SWIZZLE        0
+#else
+#define BITOP_LE_SWIZZLE        ((BITS_PER_LONG-1) & ~0x7)
+#endif
+
+static inline void set_bit_le(int nr, void *addr)
+{
+	u64 *dwords = addr;
+
+	nr ^= BITOP_LE_SWIZZLE;
+
+	dwords[nr / 64] |= 1 << (nr & 63);
+}
+
+#endif