--- /dev/null
+From 0dd73648532e8654e07c28bba6c80bfb779a4938 Mon Sep 17 00:00:00 2001
+From: Brian Behlendorf <behlendorf1@llnl.gov>
+Date: Thu, 6 Feb 2020 10:30:41 -0800
+Subject: [PATCH] Linux 5.6 compat: struct proc_ops
+
+The proc_ops structure was introduced to replace the use of of the
+file_operations structure when registering proc handlers. This
+change creates a new kstat_proc_op_t typedef for compatibility
+which can be used to pass around the correct structure.
+
+This change additionally adds the 'const' keyword to all of the
+existing proc operations structures.
+
+Reviewed-by: Tony Hutter <hutter2@llnl.gov>
+Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
+Closes #9961
+---
+ config/kernel-proc-operations.m4 | 41 +++++++++++++++++++++++++++
+ config/kernel.m4 | 2 ++
+ include/spl/sys/kstat.h | 8 +++++-
+ module/spl/spl-kstat.c | 14 +++++++--
+ module/spl/spl-proc.c | 33 +++++++++++++++++----
+ module/spl/spl-procfs-list.c | 11 +++++--
+ 6 files changed, 97 insertions(+), 12 deletions(-)
+ create mode 100644 config/kernel-proc-operations.m4
+
+diff --git a/config/kernel-proc-operations.m4 b/config/kernel-proc-operations.m4
+new file mode 100644
+index 00000000000..df216222ecc
+--- /dev/null
++++ b/config/kernel-proc-operations.m4
+@@ -0,0 +1,41 @@
++dnl #
++dnl # 5.6 API Change
++dnl # The proc_ops structure was introduced to replace the use of
++dnl # of the file_operations structure when registering proc handlers.
++dnl #
++AC_DEFUN([ZFS_AC_KERNEL_SRC_PROC_OPERATIONS], [
++ ZFS_LINUX_TEST_SRC([proc_ops_struct], [
++ #include <linux/proc_fs.h>
++
++ int test_open(struct inode *ip, struct file *fp) { return 0; }
++ ssize_t test_read(struct file *fp, char __user *ptr,
++ size_t size, loff_t *offp) { return 0; }
++ ssize_t test_write(struct file *fp, const char __user *ptr,
++ size_t size, loff_t *offp) { return 0; }
++ loff_t test_lseek(struct file *fp, loff_t off, int flag)
++ { return 0; }
++ int test_release(struct inode *ip, struct file *fp)
++ { return 0; }
++
++ const struct proc_ops test_ops __attribute__ ((unused)) = {
++ .proc_open = test_open,
++ .proc_read = test_read,
++ .proc_write = test_write,
++ .proc_lseek = test_lseek,
++ .proc_release = test_release,
++ };
++ ], [
++ struct proc_dir_entry *entry __attribute__ ((unused)) =
++ proc_create_data("test", 0444, NULL, &test_ops, NULL);
++ ])
++])
++
++AC_DEFUN([ZFS_AC_KERNEL_PROC_OPERATIONS], [
++ AC_MSG_CHECKING([whether proc_ops structure exists])
++ ZFS_LINUX_TEST_RESULT([proc_ops_struct], [
++ AC_MSG_RESULT(yes)
++ AC_DEFINE(HAVE_PROC_OPS_STRUCT, 1, [proc_ops structure exists])
++ ], [
++ AC_MSG_RESULT(no)
++ ])
++])
+diff --git a/config/kernel.m4 b/config/kernel.m4
+index ec8f6a5c107..23643e0c3de 100644
+--- a/config/kernel.m4
++++ b/config/kernel.m4
+@@ -52,6 +52,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
+ ZFS_AC_KERNEL_SRC_CURRENT_BIO_TAIL
+ ZFS_AC_KERNEL_SRC_SUPER_USER_NS
+ ZFS_AC_KERNEL_SRC_SUBMIT_BIO
++ ZFS_AC_KERNEL_SRC_PROC_OPERATIONS
+ ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS
+ ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH
+ ZFS_AC_KERNEL_SRC_BLKDEV_REREAD_PART
+@@ -145,6 +146,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
+ ZFS_AC_KERNEL_CURRENT_BIO_TAIL
+ ZFS_AC_KERNEL_SUPER_USER_NS
+ ZFS_AC_KERNEL_SUBMIT_BIO
++ ZFS_AC_KERNEL_PROC_OPERATIONS
+ ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS
+ ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
+ ZFS_AC_KERNEL_BLKDEV_REREAD_PART
+diff --git a/include/spl/sys/kstat.h b/include/spl/sys/kstat.h
+index 3ce47424887..c93c53171d8 100644
+--- a/include/spl/sys/kstat.h
++++ b/include/spl/sys/kstat.h
+@@ -152,6 +152,12 @@ typedef struct kstat_named_s {
+ #define KSTAT_NAMED_STR_PTR(knptr) ((knptr)->value.string.addr.ptr)
+ #define KSTAT_NAMED_STR_BUFLEN(knptr) ((knptr)->value.string.len)
+
++#ifdef HAVE_PROC_OPS_STRUCT
++typedef struct proc_ops kstat_proc_op_t;
++#else
++typedef struct file_operations kstat_proc_op_t;
++#endif
++
+ typedef struct kstat_intr {
+ uint_t intrs[KSTAT_NUM_INTRS];
+ } kstat_intr_t;
+@@ -197,7 +203,7 @@ extern void kstat_proc_entry_init(kstat_proc_entry_t *kpep,
+ const char *module, const char *name);
+ extern void kstat_proc_entry_delete(kstat_proc_entry_t *kpep);
+ extern void kstat_proc_entry_install(kstat_proc_entry_t *kpep, mode_t mode,
+- const struct file_operations *file_ops, void *data);
++ const kstat_proc_op_t *file_ops, void *data);
+
+ extern void __kstat_install(kstat_t *ksp);
+ extern void __kstat_delete(kstat_t *ksp);
+diff --git a/module/spl/spl-kstat.c b/module/spl/spl-kstat.c
+index 75565d082ab..b971b4498cc 100644
+--- a/module/spl/spl-kstat.c
++++ b/module/spl/spl-kstat.c
+@@ -507,12 +507,20 @@ proc_kstat_write(struct file *filp, const char __user *buf, size_t len,
+ return (len);
+ }
+
+-static struct file_operations proc_kstat_operations = {
++static const kstat_proc_op_t proc_kstat_operations = {
++#ifdef HAVE_PROC_OPS_STRUCT
++ .proc_open = proc_kstat_open,
++ .proc_write = proc_kstat_write,
++ .proc_read = seq_read,
++ .proc_lseek = seq_lseek,
++ .proc_release = seq_release,
++#else
+ .open = proc_kstat_open,
+ .write = proc_kstat_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
++#endif
+ };
+
+ void
+@@ -656,7 +664,7 @@ kstat_detect_collision(kstat_proc_entry_t *kpep)
+ */
+ void
+ kstat_proc_entry_install(kstat_proc_entry_t *kpep, mode_t mode,
+- const struct file_operations *file_ops, void *data)
++ const kstat_proc_op_t *proc_ops, void *data)
+ {
+ kstat_module_t *module;
+ kstat_proc_entry_t *tmp = NULL;
+@@ -690,7 +698,7 @@ kstat_proc_entry_install(kstat_proc_entry_t *kpep, mode_t mode,
+
+ kpep->kpe_owner = module;
+ kpep->kpe_proc = proc_create_data(kpep->kpe_name, mode,
+- module->ksm_proc, file_ops, data);
++ module->ksm_proc, proc_ops, data);
+ if (kpep->kpe_proc == NULL) {
+ list_del_init(&kpep->kpe_list);
+ if (list_empty(&module->ksm_kstat_list))
+diff --git a/module/spl/spl-proc.c b/module/spl/spl-proc.c
+index 45bc7f96360..f68f9b5220d 100644
+--- a/module/spl/spl-proc.c
++++ b/module/spl/spl-proc.c
+@@ -532,11 +532,18 @@ proc_slab_open(struct inode *inode, struct file *filp)
+ return (seq_open(filp, &slab_seq_ops));
+ }
+
+-static struct file_operations proc_slab_operations = {
+- .open = proc_slab_open,
+- .read = seq_read,
+- .llseek = seq_lseek,
++static const kstat_proc_op_t proc_slab_operations = {
++#ifdef HAVE_PROC_OPS_STRUCT
++ .proc_open = proc_slab_open,
++ .proc_read = seq_read,
++ .proc_lseek = seq_lseek,
++ .proc_release = seq_release,
++#else
++ .open = proc_slab_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
+ .release = seq_release,
++#endif
+ };
+
+ static void
+@@ -571,18 +578,32 @@ proc_taskq_open(struct inode *inode, struct file *filp)
+ return (seq_open(filp, &taskq_seq_ops));
+ }
+
+-static struct file_operations proc_taskq_all_operations = {
++static const kstat_proc_op_t proc_taskq_all_operations = {
++#ifdef HAVE_PROC_OPS_STRUCT
++ .proc_open = proc_taskq_all_open,
++ .proc_read = seq_read,
++ .proc_lseek = seq_lseek,
++ .proc_release = seq_release,
++#else
+ .open = proc_taskq_all_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
++#endif
+ };
+
+-static struct file_operations proc_taskq_operations = {
++static const kstat_proc_op_t proc_taskq_operations = {
++#ifdef HAVE_PROC_OPS_STRUCT
++ .proc_open = proc_taskq_open,
++ .proc_read = seq_read,
++ .proc_lseek = seq_lseek,
++ .proc_release = seq_release,
++#else
+ .open = proc_taskq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
++#endif
+ };
+
+ static struct ctl_table spl_kmem_table[] = {
+diff --git a/module/spl/spl-procfs-list.c b/module/spl/spl-procfs-list.c
+index f6a00da5c91..189d6a7c608 100644
+--- a/module/spl/spl-procfs-list.c
++++ b/module/spl/spl-procfs-list.c
+@@ -185,13 +185,20 @@ procfs_list_write(struct file *filp, const char __user *buf, size_t len,
+ return (len);
+ }
+
+-static struct file_operations procfs_list_operations = {
+- .owner = THIS_MODULE,
++static const kstat_proc_op_t procfs_list_operations = {
++#ifdef HAVE_PROC_OPS_STRUCT
++ .proc_open = procfs_list_open,
++ .proc_write = procfs_list_write,
++ .proc_read = seq_read,
++ .proc_lseek = seq_lseek,
++ .proc_release = seq_release_private,
++#else
+ .open = procfs_list_open,
+ .write = procfs_list_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private,
++#endif
+ };
+
+ /*
+From 795699a6cc28b8f1059397e03d1a86d576bfc7dc Mon Sep 17 00:00:00 2001
+From: Brian Behlendorf <behlendorf1@llnl.gov>
+Date: Thu, 6 Feb 2020 12:37:25 -0800
+Subject: [PATCH] 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
+---
+ config/kernel-inode-times.m4 | 31 +++++++++++++++++++++++++++----
+ include/sys/zpl.h | 13 +++++++------
+ module/zfs/zfs_vnops.c | 8 ++++----
+ module/zfs/zpl_inode.c | 6 ++----
+ 4 files changed, 40 insertions(+), 18 deletions(-)
+
+diff --git a/config/kernel-inode-times.m4 b/config/kernel-inode-times.m4
+index 57e7f31fdcb..8a79c299e1a 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 20a3dc67498..ef5a0b842d0 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 ec63dbdeb6c..406cd7ef229 100644
+--- a/module/zfs/zfs_vnops.c
++++ b/module/zfs/zfs_vnops.c
+@@ -3444,8 +3444,8 @@ zfs_setattr(znode_t *zp, vattr_t *vap, int flags, cred_t *cr)
+
+ 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 @@ zfs_setattr(znode_t *zp, vattr_t *vap, int flags, cred_t *cr)
+
+ 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 e1c6ce7b705..c1b5825748c 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);
+From ff5587d651371ab496f7962e85fe2c337fdb8a59 Mon Sep 17 00:00:00 2001
+From: Brian Behlendorf <behlendorf1@llnl.gov>
+Date: Wed, 26 Feb 2020 12:42:33 -0800
+Subject: [PATCH] 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
+---
+ config/kernel-ktime.m4 | 55 +++++++++++++++++++++
+ config/kernel-ktime_get_coarse_real_ts64.m4 | 23 ---------
+ config/kernel.m4 | 4 +-
+ include/spl/sys/time.h | 5 ++
+ 4 files changed, 62 insertions(+), 25 deletions(-)
+ create mode 100644 config/kernel-ktime.m4
+ delete mode 100644 config/kernel-ktime_get_coarse_real_ts64.m4
+
+diff --git a/config/kernel-ktime.m4 b/config/kernel-ktime.m4
+new file mode 100644
+index 00000000000..64c3b5f9032
+--- /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 28492bf04bc..00000000000
+--- 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 6bb37937cb4..a0fa2514e5e 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 312415b7bc8..56fd725c03c 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);
+ }
+
+From 2c3a83701dd185cadb30db4556256534e2930c7d Mon Sep 17 00:00:00 2001
+From: Brian Behlendorf <behlendorf1@llnl.gov>
+Date: Wed, 26 Feb 2020 13:18:07 -0800
+Subject: [PATCH] Linux 5.6 compat: time_t
+
+As part of the Linux kernel's y2038 changes the time_t type has been
+fully retired. Callers are now required to use the time64_t type.
+
+Rather than move to the new type, I've removed the few remaining
+places where a time_t is used in the kernel code. They've been
+replaced with a uint64_t which is already how ZFS internally
+handled these values.
+
+Going forward we should work towards updating the remaining user
+space time_t consumers to the 64-bit interfaces.
+
+Reviewed-by: Matthew Macy <mmacy@freebsd.org>
+Reviewed-by: Tony Hutter <hutter2@llnl.gov>
+Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
+Closes #10052
+Closes #10064
+---
+ include/spl/sys/time.h | 2 +-
+ include/sys/vdev_impl.h | 4 ++--
+ lib/libspl/include/sys/time.h | 2 +-
+ module/zfs/zfs_debug.c | 2 +-
+ module/zfs/vdev_initialize.c | 2 +-
+ module/zfs/vdev_trim.c | 2 +-
+ 6 files changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/include/spl/sys/time.h b/include/spl/sys/time.h
+index 56fd725c03c..4309c300b26 100644
+--- a/include/spl/sys/time.h
++++ b/include/spl/sys/time.h
+@@ -85,7 +85,7 @@ gethrestime(inode_timespec_t *ts)
+ #endif
+ }
+
+-static inline time_t
++static inline uint64_t
+ gethrestime_sec(void)
+ {
+ #if defined(HAVE_INODE_TIMESPEC64_TIMES)
+diff --git a/include/sys/vdev_impl.h b/include/sys/vdev_impl.h
+index 4f63e1ae5f8..b55871a5d24 100644
+--- a/include/sys/vdev_impl.h
++++ b/include/sys/vdev_impl.h
+@@ -272,7 +272,7 @@ struct vdev {
+ range_tree_t *vdev_initialize_tree; /* valid while initializing */
+ uint64_t vdev_initialize_bytes_est;
+ uint64_t vdev_initialize_bytes_done;
+- time_t vdev_initialize_action_time; /* start and end time */
++ uint64_t vdev_initialize_action_time; /* start and end time */
+
+ /* TRIM related */
+ boolean_t vdev_trim_exit_wanted;
+@@ -293,7 +293,7 @@ struct vdev {
+ uint64_t vdev_trim_rate; /* requested rate (bytes/sec) */
+ uint64_t vdev_trim_partial; /* requested partial TRIM */
+ uint64_t vdev_trim_secure; /* requested secure TRIM */
+- time_t vdev_trim_action_time; /* start and end time */
++ uint64_t vdev_trim_action_time; /* start and end time */
+
+ /* for limiting outstanding I/Os (initialize and TRIM) */
+ kmutex_t vdev_initialize_io_lock;
+diff --git a/lib/libspl/include/sys/time.h b/lib/libspl/include/sys/time.h
+index 291f2190a28..c9f6165047d 100644
+--- a/lib/libspl/include/sys/time.h
++++ b/lib/libspl/include/sys/time.h
+@@ -88,7 +88,7 @@ gethrestime(inode_timespec_t *ts)
+ ts->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
+ }
+
+-static inline time_t
++static inline uint64_t
+ gethrestime_sec(void)
+ {
+ struct timeval tv;
+diff --git a/module/zfs/zfs_debug.c b/module/zfs/zfs_debug.c
+index a64971d0a3a..d98463f1b7f 100644
+--- a/module/zfs/zfs_debug.c
++++ b/module/zfs/zfs_debug.c
+@@ -28,7 +28,7 @@
+
+ typedef struct zfs_dbgmsg {
+ procfs_list_node_t zdm_node;
+- time_t zdm_timestamp;
++ uint64_t zdm_timestamp;
+ int zdm_size;
+ char zdm_msg[1]; /* variable length allocation */
+ } zfs_dbgmsg_t;
+diff --git a/module/zfs/vdev_initialize.c b/module/zfs/vdev_initialize.c
+index 3e691c7f532..5899af9fc67 100644
+--- a/module/zfs/vdev_initialize.c
++++ b/module/zfs/vdev_initialize.c
+@@ -713,7 +713,7 @@ vdev_initialize_restart(vdev_t *vd)
+ vd->vdev_leaf_zap, VDEV_LEAF_ZAP_INITIALIZE_ACTION_TIME,
+ sizeof (timestamp), 1, ×tamp);
+ ASSERT(err == 0 || err == ENOENT);
+- vd->vdev_initialize_action_time = (time_t)timestamp;
++ vd->vdev_initialize_action_time = timestamp;
+
+ if (vd->vdev_initialize_state == VDEV_INITIALIZE_SUSPENDED ||
+ vd->vdev_offline) {
+diff --git a/module/zfs/vdev_trim.c b/module/zfs/vdev_trim.c
+index c7c429cbd5e..7dec07e3c69 100644
+--- a/module/zfs/vdev_trim.c
++++ b/module/zfs/vdev_trim.c
+@@ -1051,7 +1051,7 @@ vdev_trim_restart(vdev_t *vd)
+ vd->vdev_leaf_zap, VDEV_LEAF_ZAP_TRIM_ACTION_TIME,
+ sizeof (timestamp), 1, ×tamp);
+ ASSERT(err == 0 || err == ENOENT);
+- vd->vdev_trim_action_time = (time_t)timestamp;
++ vd->vdev_trim_action_time = timestamp;
+
+ if (vd->vdev_trim_state == VDEV_TRIM_SUSPENDED ||
+ vd->vdev_offline) {
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