zfs: merge openzfs/zfs@d62bafee9

Notable upstream pull request merges:
  #13857 Enforce "-F" flag on resuming recv of full/newfs on existing dataset
  #13928 Revert "Reduce dbuf_find() lock contention"
  #13928 Dynamically size dbuf hash mutex array
  #13930 zpool: Don't print "repairing" on force faulted drives
  #13938 Bring per_txg_dirty_frees_percent back to 30
  #13939 Fix panic in dsl_process_sub_livelist for EINTR
  #13954 Fix bad free in skein code
  #13967 Fix potential NULL pointer dereference in dsl_dataset_promote_check()

Obtained from:	OpenZFS
OpenZFS commit:	d62bafee9fc38f8b9653c531e1861e83dcba4618

1 files changed, 33 insertions, 0 deletions

diff --git a/sys/contrib/openzfs/module/os/linux/spl/spl-generic.c b/sys/contrib/openzfs/module/os/linux/spl/spl-generic.c
index de91c44257aa..bc39ece9a427 100644
--- a/sys/contrib/openzfs/module/os/linux/spl/spl-generic.c
+++ b/sys/contrib/openzfs/module/os/linux/spl/spl-generic.c
@@ -47,6 +47,7 @@
 #include <linux/mod_compat.h>
 #include <sys/cred.h>
 #include <sys/vnode.h>
+#include <sys/misc.h>
 
 unsigned long spl_hostid = 0;
 EXPORT_SYMBOL(spl_hostid);
@@ -517,6 +518,38 @@ ddi_copyin(const void *from, void *to, size_t len, int flags)
 }
 EXPORT_SYMBOL(ddi_copyin);
 
+/*
+ * Post a uevent to userspace whenever a new vdev adds to the pool. It is
+ * necessary to sync blkid information with udev, which zed daemon uses
+ * during device hotplug to identify the vdev.
+ */
+void
+spl_signal_kobj_evt(struct block_device *bdev)
+{
+#if defined(HAVE_BDEV_KOBJ) || defined(HAVE_PART_TO_DEV)
+#ifdef HAVE_BDEV_KOBJ
+	struct kobject *disk_kobj = bdev_kobj(bdev);
+#else
+	struct kobject *disk_kobj = &part_to_dev(bdev->bd_part)->kobj;
+#endif
+	if (disk_kobj) {
+		int ret = kobject_uevent(disk_kobj, KOBJ_CHANGE);
+		if (ret) {
+			pr_warn("ZFS: Sending event '%d' to kobject: '%s'"
+			    " (%p): failed(ret:%d)\n", KOBJ_CHANGE,
+			    kobject_name(disk_kobj), disk_kobj, ret);
+		}
+	}
+#else
+/*
+ * This is encountered if neither bdev_kobj() nor part_to_dev() is available
+ * in the kernel - likely due to an API change that needs to be chased down.
+ */
+#error "Unsupported kernel: unable to get struct kobj from bdev"
+#endif
+}
+EXPORT_SYMBOL(spl_signal_kobj_evt);
+
 int
 ddi_copyout(const void *from, void *to, size_t len, int flags)
 {