Pull in timespec, list, and type compat changes to support

building against a wider range of kernels.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@152 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

3 files changed, 56 insertions, 0 deletions

diff --git a/include/linux/list_compat.h b/include/linux/list_compat.h
new file mode 100644
index 000000000..e5daa0410
--- /dev/null
+++ b/include/linux/list_compat.h
@@ -0,0 +1,27 @@
+#ifndef _SPL_LIST_COMPAT_H
+#define _SPL_LIST_COMPAT_H
+
+#include <linux/list.h>
+
+#ifndef list_for_each_entry_safe_reverse
+
+/**
+ * list_for_each_entry_safe_reverse
+ * @pos:        the type * to use as a loop cursor.
+ * @n:          another type * to use as temporary storage
+ * @head:       the head for your list.
+ * @member:     the name of the list_struct within the struct.
+ *
+ * Iterate backwards over list of given type, safe against removal
+ * of list entry.
+ */
+#define list_for_each_entry_safe_reverse(pos, n, head, member)          \
+        for (pos = list_entry((head)->prev, typeof(*pos), member),      \
+                n = list_entry(pos->member.prev, typeof(*pos), member); \
+             &pos->member != (head);                                    \
+             pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+
+#endif /* list_for_each_entry_safe_reverse */
+
+#endif /* SPL_LIST_COMPAT_H */
+
diff --git a/include/linux/time_compat.h b/include/linux/time_compat.h
new file mode 100644
index 000000000..1b4727dcd
--- /dev/null
+++ b/include/linux/time_compat.h
@@ -0,0 +1,21 @@
+#ifndef _SPL_TIME_COMPAT_H
+#define _SPL_TIME_COMPAT_H
+
+#include <linux/time.h>
+
+/* timespec_sub() API changes
+ * 2.6.18  - 2.6.x: Inline function provided by linux/time.h
+ */
+#ifndef HAVE_TIMESPEC_SUB
+static inline struct timespec
+timespec_sub(struct timespec lhs, struct timespec rhs)
+{
+        struct timespec ts_delta;
+        set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec,
+                                lhs.tv_nsec - rhs.tv_nsec);
+        return ts_delta;
+}
+#endif /* HAVE_TIMESPEC_SUB */
+
+#endif /* _SPL_TIME_COMPAT_H */
+
diff --git a/include/sys/types.h b/include/sys/types.h
index eba23eae0..1dec7b8d0 100644
--- a/include/sys/types.h
+++ b/include/sys/types.h
@@ -13,6 +13,14 @@ extern "C" {
 typedef unsigned long			uintptr_t;
 #endif
 
+#ifndef ULLONG_MAX
+#define ULLONG_MAX			(~0ULL)
+#endif
+
+#ifndef LLONG_MAX
+#define LLONG_MAX			((long long)(~0ULL>>1))
+#endif
+
 typedef enum { B_FALSE=0, B_TRUE=1 }	boolean_t;
 typedef unsigned long			intptr_t;
 typedef unsigned long			ulong_t;