|
 |
2910d5 |
From 7039d1f8200b9599b23db5953934fdb43b0442e0 Mon Sep 17 00:00:00 2001
|
|
|
2910d5 |
From: Jes Sorensen <jsorensen@fb.com>
|
|
|
2910d5 |
Date: Tue, 9 Jul 2019 14:15:38 -0400
|
|
|
2910d5 |
Subject: [RHEL7.8 PATCH V2 28/47] mdadm.h: Introduced unaligned
|
|
|
2910d5 |
{get,put}_unaligned{16,32}()
|
|
|
2910d5 |
|
|
|
2910d5 |
We need these to avoid gcc9 going all crazy on us.
|
|
|
2910d5 |
|
|
|
2910d5 |
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
|
|
|
2910d5 |
---
|
|
|
2910d5 |
mdadm.h | 30 ++++++++++++++++++++++++++++++
|
|
|
2910d5 |
1 file changed, 30 insertions(+)
|
|
|
2910d5 |
|
|
|
2910d5 |
diff --git a/mdadm.h b/mdadm.h
|
|
|
2910d5 |
index 427cc52..0fa9e1b 100644
|
|
|
2910d5 |
--- a/mdadm.h
|
|
|
2910d5 |
+++ b/mdadm.h
|
|
|
2910d5 |
@@ -192,6 +192,36 @@ struct dlm_lksb {
|
|
|
2910d5 |
#endif /* __KLIBC__ */
|
|
|
2910d5 |
|
|
|
2910d5 |
/*
|
|
|
2910d5 |
+ * Partially stolen from include/linux/unaligned/packed_struct.h
|
|
|
2910d5 |
+ */
|
|
|
2910d5 |
+struct __una_u16 { __u16 x; } __attribute__ ((packed));
|
|
|
2910d5 |
+struct __una_u32 { __u32 x; } __attribute__ ((packed));
|
|
|
2910d5 |
+
|
|
|
2910d5 |
+static inline __u16 __get_unaligned16(const void *p)
|
|
|
2910d5 |
+{
|
|
|
2910d5 |
+ const struct __una_u16 *ptr = (const struct __una_u16 *)p;
|
|
|
2910d5 |
+ return ptr->x;
|
|
|
2910d5 |
+}
|
|
|
2910d5 |
+
|
|
|
2910d5 |
+static inline __u32 __get_unaligned32(const void *p)
|
|
|
2910d5 |
+{
|
|
|
2910d5 |
+ const struct __una_u32 *ptr = (const struct __una_u32 *)p;
|
|
|
2910d5 |
+ return ptr->x;
|
|
|
2910d5 |
+}
|
|
|
2910d5 |
+
|
|
|
2910d5 |
+static inline void __put_unaligned16(__u16 val, void *p)
|
|
|
2910d5 |
+{
|
|
|
2910d5 |
+ struct __una_u16 *ptr = (struct __una_u16 *)p;
|
|
|
2910d5 |
+ ptr->x = val;
|
|
|
2910d5 |
+}
|
|
|
2910d5 |
+
|
|
|
2910d5 |
+static inline void __put_unaligned32(__u32 val, void *p)
|
|
|
2910d5 |
+{
|
|
|
2910d5 |
+ struct __una_u32 *ptr = (struct __una_u32 *)p;
|
|
|
2910d5 |
+ ptr->x = val;
|
|
|
2910d5 |
+}
|
|
|
2910d5 |
+
|
|
|
2910d5 |
+/*
|
|
|
2910d5 |
* Check at compile time that something is of a particular type.
|
|
|
2910d5 |
* Always evaluates to 1 so you may use it easily in comparisons.
|
|
|
2910d5 |
*/
|
|
|
2910d5 |
--
|
|
|
2910d5 |
2.7.5
|
|
|
2910d5 |
|