[PATCH v7 23/27] scsi: sd: add multipath disk attr groups

[John Garry <john.g.garry@oracle.com>]

From: John Garry <john.garry@linux.dev>

Set multipath disk attr groups, which includes delayed disk removal and
everything from mpath_attr_group.

Signed-off-by: John Garry <john.garry@linux.dev>
---
 drivers/scsi/sd.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6847805215bd7..60e071d23ddd0 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -4019,6 +4019,42 @@ static int sd_format_disk_name(char *prefix, int index, char *buf, int buflen)
 	return 0;
 }
 
+static ssize_t sd_mpath_device_delayed_removal_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct mpath_head *mpath_head = mpath_bd_device_to_head(dev);
+
+	return mpath_delayed_removal_secs_store(mpath_head, buf, count);
+}
+
+static ssize_t sd_mpath_device_delayed_removal_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct mpath_head *mpath_head = mpath_bd_device_to_head(dev);
+
+	return mpath_delayed_removal_secs_show(mpath_head, buf);
+}
+
+static DEVICE_ATTR(delayed_removal_secs, S_IRUGO | S_IWUSR,
+		sd_mpath_device_delayed_removal_show,
+		sd_mpath_device_delayed_removal_store);
+
+static struct attribute *sd_mpath_disk_attrs[] = {
+	&dev_attr_delayed_removal_secs.attr,
+	NULL
+};
+
+static const struct attribute_group sd_mpath_disk_attr_group = {
+	.attrs		= sd_mpath_disk_attrs,
+};
+
+__maybe_unused
+static const struct attribute_group *sd_mpath_disk_attr_groups[] = {
+	&sd_mpath_disk_attr_group,
+	&mpath_attr_group,
+	NULL
+};
+
 /**
  *	sd_probe - called during driver initialization and whenever a
  *	new scsi device is attached to the system. It is called once
-- 
2.43.7