Allow 64-bit timestamps to be set on 64-bit kernels

ZFS and 64-bit linux are perfectly capable of dealing with 64-bit timestamps, but ZFS deliberately prevents setting them. Adjust the SPL such that TIMESPEC_OVERFLOW will not always assume 32-bit values and instead use the correct values for your kernel build. This effectively allows 64-bit timestamps on 64-bit systems. Signed-off-by: Brian Behlendorf <[email protected]> Closes ZFS issue #487
openzfs · Dec 12, 2011 · 791dc87 · 791dc87
1 parent e05bec8
commit 791dc87
Showing 1 changed file with 8 additions and 3 deletions.
diff --git a/include/sys/time.h b/include/sys/time.h
@@ -34,8 +34,13 @@
 #include <sys/types.h>
 #include <sys/timer.h>
 
-#define TIME32_MAX			INT32_MAX
-#define TIME32_MIN			INT32_MIN
+#if defined(CONFIG_64BIT)
+#define TIME_MAX			INT64_MAX
+#define TIME_MIN			INT64_MIN
+#else
+#define TIME_MAX			INT32_MAX
+#define TIME_MIN			INT32_MIN
+#endif
 
 #define SEC				1
 #define MILLISEC			1000
@@ -83,6 +88,6 @@ gethrestime_sec(void)
 }
 
 #define TIMESPEC_OVERFLOW(ts)		\
-	((ts)->tv_sec < TIME32_MIN || (ts)->tv_sec > TIME32_MAX)
+	((ts)->tv_sec < TIME_MIN || (ts)->tv_sec > TIME_MAX)
 
 #endif  /* _SPL_TIME_H */