user/zfs, user/zfs-utils: update to 0.8.3 and make it build

Update autoconf to remove nonstandard '&>' redirection that causes
module build test to inadvertently background in dash and then fail due
to a race.

Also backport patches to support removal of time_t; commit hashes
courtesy of https://bugs.launchpad.net/bugs/1863136 .

1 files changed, 145 insertions, 0 deletions

diff --git a/user/zfs/Linux-5.6-compat-ktime_get_raw_ts64-ff5587d65137.patch b/user/zfs/Linux-5.6-compat-ktime_get_raw_ts64-ff5587d65137.patch
new file mode 100644
index 000000000..1b0402d29
--- /dev/null
+++ b/user/zfs/Linux-5.6-compat-ktime_get_raw_ts64-ff5587d65137.patch
@@ -0,0 +1,145 @@
+commit ff5587d651371ab496f7962e85fe2c337fdb8a59
+Author: Brian Behlendorf <behlendorf1@llnl.gov>
+Date:   Wed Feb 26 12:42:33 2020 -0800
+
+    Linux 5.6 compat: ktime_get_raw_ts64()
+    
+    The getrawmonotonic() and getrawmonotonic64() interfaces have been
+    fully retired.  Update gethrtime() to use the replacement interface
+    ktime_get_raw_ts64() which was introduced in the 4.18 kernel.
+    
+    Reviewed-by: Tony Hutter <hutter2@llnl.gov>
+    Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
+    Closes #10052
+    Closes #10064
+
+diff --git a/config/kernel-ktime.m4 b/config/kernel-ktime.m4
+new file mode 100644
+index 000000000..64c3b5f90
+--- /dev/null
++++ b/config/kernel-ktime.m4
+@@ -0,0 +1,55 @@
++dnl #
++dnl # 4.18: ktime_get_coarse_real_ts64() replaces current_kernel_time64().
++dnl #
++AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64], [
++	ZFS_LINUX_TEST_SRC([ktime_get_coarse_real_ts64], [
++		#include <linux/mm.h>
++	], [
++		struct timespec64 ts;
++		ktime_get_coarse_real_ts64(&ts);
++	])
++])
++
++AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64], [
++	AC_MSG_CHECKING([whether ktime_get_coarse_real_ts64() exists])
++	ZFS_LINUX_TEST_RESULT([ktime_get_coarse_real_ts64], [
++		AC_MSG_RESULT(yes)
++		AC_DEFINE(HAVE_KTIME_GET_COARSE_REAL_TS64, 1,
++		    [ktime_get_coarse_real_ts64() exists])
++	], [
++		AC_MSG_RESULT(no)
++	])
++])
++
++dnl #
++dnl # 4.18: ktime_get_raw_ts64() replaces getrawmonotonic64().
++dnl #
++AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_RAW_TS64], [
++	ZFS_LINUX_TEST_SRC([ktime_get_raw_ts64], [
++		#include <linux/mm.h>
++	], [
++		struct timespec64 ts;
++		ktime_get_raw_ts64(&ts);
++	])
++])
++
++AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_RAW_TS64], [
++	AC_MSG_CHECKING([whether ktime_get_raw_ts64() exists])
++	ZFS_LINUX_TEST_RESULT([ktime_get_raw_ts64], [
++		AC_MSG_RESULT(yes)
++		AC_DEFINE(HAVE_KTIME_GET_RAW_TS64, 1,
++		    [ktime_get_raw_ts64() exists])
++	], [
++		AC_MSG_RESULT(no)
++	])
++])
++
++AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME], [
++	ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64
++	ZFS_AC_KERNEL_SRC_KTIME_GET_RAW_TS64
++])
++
++AC_DEFUN([ZFS_AC_KERNEL_KTIME], [
++	ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
++	ZFS_AC_KERNEL_KTIME_GET_RAW_TS64
++])
+diff --git a/config/kernel-ktime_get_coarse_real_ts64.m4 b/config/kernel-ktime_get_coarse_real_ts64.m4
+deleted file mode 100644
+index 28492bf04..000000000
+--- a/config/kernel-ktime_get_coarse_real_ts64.m4
++++ /dev/null
+@@ -1,23 +0,0 @@
+-dnl #
+-dnl # 4.18: ktime_get_coarse_real_ts64() added.  Use it in place of
+-dnl # current_kernel_time64().
+-dnl #
+-AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64], [
+-	ZFS_LINUX_TEST_SRC([ktime_get_coarse_real_ts64], [
+-		#include <linux/mm.h>
+-	], [
+-		struct timespec64 ts;
+-		ktime_get_coarse_real_ts64(&ts);
+-	])
+-])
+-
+-AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64], [
+-	AC_MSG_CHECKING([whether ktime_get_coarse_real_ts64() exists])
+-	ZFS_LINUX_TEST_RESULT([ktime_get_coarse_real_ts64], [
+-		AC_MSG_RESULT(yes)
+-		AC_DEFINE(HAVE_KTIME_GET_COARSE_REAL_TS64, 1,
+-		    [ktime_get_coarse_real_ts64() exists])
+-	], [
+-		AC_MSG_RESULT(no)
+-	])
+-])
+diff --git a/config/kernel.m4 b/config/kernel.m4
+index 6bb37937c..a0fa2514e 100644
+--- a/config/kernel.m4
++++ b/config/kernel.m4
+@@ -114,7 +114,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
+ 	ZFS_AC_KERNEL_SRC_CURRENT_TIME
+ 	ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES
+ 	ZFS_AC_KERNEL_SRC_IN_COMPAT_SYSCALL
+-	ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64
++	ZFS_AC_KERNEL_SRC_KTIME
+ 	ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC
+ 	ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES
+ 	ZFS_AC_KERNEL_SRC_KSTRTOUL
+@@ -208,7 +208,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
+ 	ZFS_AC_KERNEL_CURRENT_TIME
+ 	ZFS_AC_KERNEL_USERNS_CAPABILITIES
+ 	ZFS_AC_KERNEL_IN_COMPAT_SYSCALL
+-	ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
++	ZFS_AC_KERNEL_KTIME
+ 	ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC
+ 	ZFS_AC_KERNEL_TOTALHIGH_PAGES
+ 	ZFS_AC_KERNEL_KSTRTOUL
+diff --git a/include/spl/sys/time.h b/include/spl/sys/time.h
+index 312415b7b..56fd725c0 100644
+--- a/include/spl/sys/time.h
++++ b/include/spl/sys/time.h
+@@ -105,8 +105,13 @@ gethrestime_sec(void)
+ static inline hrtime_t
+ gethrtime(void)
+ {
++#if defined(HAVE_KTIME_GET_RAW_TS64)
++	struct timespec64 ts;
++	ktime_get_raw_ts64(&ts);
++#else
+ 	struct timespec ts;
+ 	getrawmonotonic(&ts);
++#endif
+ 	return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
+ }
+