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, 131 insertions, 0 deletions

diff --git a/user/zfs/Linux-5.6-compat-timestamp_truncate-795699a6cc28.patch b/user/zfs/Linux-5.6-compat-timestamp_truncate-795699a6cc28.patch
new file mode 100644
index 000000000..deb81347b
--- /dev/null
+++ b/user/zfs/Linux-5.6-compat-timestamp_truncate-795699a6cc28.patch
@@ -0,0 +1,131 @@
+commit 795699a6cc28b8f1059397e03d1a86d576bfc7dc
+Author: Brian Behlendorf <behlendorf1@llnl.gov>
+Date:   Thu Feb 6 12:37:25 2020 -0800
+
+    Linux 5.6 compat: timestamp_truncate()
+    
+    The timestamp_truncate() function was added, it replaces the existing
+    timespec64_trunc() function.  This change renames our wrapper function
+    to be consistent with the upstream name and updates the compatibility
+    code for older kernels accordingly.
+    
+    Reviewed-by: Tony Hutter <hutter2@llnl.gov>
+    Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
+    Closes #9956
+    Closes #9961
+
+diff --git a/config/kernel-inode-times.m4 b/config/kernel-inode-times.m4
+index 57e7f31fd..8a79c299e 100644
+--- a/config/kernel-inode-times.m4
++++ b/config/kernel-inode-times.m4
+@@ -1,8 +1,22 @@
+-dnl #
+-dnl # 4.18 API change
+-dnl # i_atime, i_mtime, and i_ctime changed from timespec to timespec64.
+-dnl #
+ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_TIMES], [
++
++	dnl #
++	dnl # 5.6 API change
++	dnl # timespec64_trunc() replaced by timestamp_truncate() interface.
++	dnl #
++	ZFS_LINUX_TEST_SRC([timestamp_truncate], [
++		#include <linux/fs.h>
++	],[
++		struct timespec64 ts;
++		struct inode ip;
++
++		ts = timestamp_truncate(ts, &ip);
++	])
++
++	dnl #
++	dnl # 4.18 API change
++	dnl # i_atime, i_mtime, and i_ctime changed from timespec to timespec64.
++	dnl #
+ 	ZFS_LINUX_TEST_SRC([inode_times], [
+ 		#include <linux/fs.h>
+ 	],[
+@@ -15,6 +29,15 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_TIMES], [
+ ])
+ 
+ AC_DEFUN([ZFS_AC_KERNEL_INODE_TIMES], [
++	AC_MSG_CHECKING([whether timestamp_truncate() exists])
++	ZFS_LINUX_TEST_RESULT([timestamp_truncate], [
++		AC_MSG_RESULT(yes)
++		AC_DEFINE(HAVE_INODE_TIMESTAMP_TRUNCATE, 1,
++		    [timestamp_truncate() exists])
++	],[
++		AC_MSG_RESULT(no)
++	])
++
+ 	AC_MSG_CHECKING([whether inode->i_*time's are timespec64])
+ 	ZFS_LINUX_TEST_RESULT([inode_times], [
+ 		AC_MSG_RESULT(no)
+diff --git a/include/sys/zpl.h b/include/sys/zpl.h
+index 20a3dc674..ef5a0b842 100644
+--- a/include/sys/zpl.h
++++ b/include/sys/zpl.h
+@@ -170,13 +170,14 @@ zpl_dir_emit_dots(struct file *file, zpl_dir_context_t *ctx)
+ }
+ #endif /* HAVE_VFS_ITERATE */
+ 
+-/*
+- * Linux 4.18, inode times converted from timespec to timespec64.
+- */
+-#if defined(HAVE_INODE_TIMESPEC64_TIMES)
+-#define	zpl_inode_timespec_trunc(ts, gran)	timespec64_trunc(ts, gran)
++#if defined(HAVE_INODE_TIMESTAMP_TRUNCATE)
++#define	zpl_inode_timestamp_truncate(ts, ip)	timestamp_truncate(ts, ip)
++#elif defined(HAVE_INODE_TIMESPEC64_TIMES)
++#define	zpl_inode_timestamp_truncate(ts, ip)	\
++	timespec64_trunc(ts, (ip)->i_sb->s_time_gran)
+ #else
+-#define	zpl_inode_timespec_trunc(ts, gran)	timespec_trunc(ts, gran)
++#define	zpl_inode_timestamp_truncate(ts, ip)	\
++	timespec_trunc(ts, (ip)->i_sb->s_time_gran)
+ #endif
+ 
+ #endif	/* _SYS_ZPL_H */
+diff --git a/module/zfs/zfs_vnops.c b/module/zfs/zfs_vnops.c
+index ec63dbdeb..406cd7ef2 100644
+--- a/module/zfs/zfs_vnops.c
++++ b/module/zfs/zfs_vnops.c
+@@ -3444,8 +3444,8 @@ top:
+ 
+ 	if (mask & (ATTR_MTIME | ATTR_SIZE)) {
+ 		ZFS_TIME_ENCODE(&vap->va_mtime, mtime);
+-		ZTOI(zp)->i_mtime = zpl_inode_timespec_trunc(vap->va_mtime,
+-		    ZTOI(zp)->i_sb->s_time_gran);
++		ZTOI(zp)->i_mtime = zpl_inode_timestamp_truncate(
++		    vap->va_mtime, ZTOI(zp));
+ 
+ 		SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL,
+ 		    mtime, sizeof (mtime));
+@@ -3453,8 +3453,8 @@ top:
+ 
+ 	if (mask & (ATTR_CTIME | ATTR_SIZE)) {
+ 		ZFS_TIME_ENCODE(&vap->va_ctime, ctime);
+-		ZTOI(zp)->i_ctime = zpl_inode_timespec_trunc(vap->va_ctime,
+-		    ZTOI(zp)->i_sb->s_time_gran);
++		ZTOI(zp)->i_ctime = zpl_inode_timestamp_truncate(vap->va_ctime,
++		    ZTOI(zp));
+ 		SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
+ 		    ctime, sizeof (ctime));
+ 	}
+diff --git a/module/zfs/zpl_inode.c b/module/zfs/zpl_inode.c
+index e1c6ce7b7..c1b582574 100644
+--- a/module/zfs/zpl_inode.c
++++ b/module/zfs/zpl_inode.c
+@@ -382,10 +382,8 @@ zpl_setattr(struct dentry *dentry, struct iattr *ia)
+ 	vap->va_mtime = ia->ia_mtime;
+ 	vap->va_ctime = ia->ia_ctime;
+ 
+-	if (vap->va_mask & ATTR_ATIME) {
+-		ip->i_atime = zpl_inode_timespec_trunc(ia->ia_atime,
+-		    ip->i_sb->s_time_gran);
+-	}
++	if (vap->va_mask & ATTR_ATIME)
++		ip->i_atime = zpl_inode_timestamp_truncate(ia->ia_atime, ip);
+ 
+ 	cookie = spl_fstrans_mark();
+ 	error = -zfs_setattr(ITOZ(ip), vap, 0, cr);