[PATCH 05/14] scsi: core: Cache VPD pages b0, b1, b2

["Martin K. Petersen" <martin.petersen@xxxxxxxxxx>]

Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
 drivers/scsi/scsi.c        |  6 ++++++
 drivers/scsi/scsi_sysfs.c  | 28 ++++++++++++++++++++++++++++
 include/scsi/scsi_device.h |  4 ++++
 3 files changed, 38 insertions(+)

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index c6221a2ca04e..524e03aba9ef 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -488,6 +488,12 @@ void scsi_attach_vpd(struct scsi_device *sdev)
 			scsi_update_vpd_page(sdev, 0x83, &sdev->vpd_pg83);
 		if (vpd_buf->data[i] == 0x89)
 			scsi_update_vpd_page(sdev, 0x89, &sdev->vpd_pg89);
+		if (vpd_buf->data[i] == 0xb0)
+			scsi_update_vpd_page(sdev, 0xb0, &sdev->vpd_pgb0);
+		if (vpd_buf->data[i] == 0xb1)
+			scsi_update_vpd_page(sdev, 0xb1, &sdev->vpd_pgb1);
+		if (vpd_buf->data[i] == 0xb2)
+			scsi_update_vpd_page(sdev, 0xb2, &sdev->vpd_pgb2);
 	}
 	kfree(vpd_buf);
 }
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 226a50944c00..1ed45de9970d 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -448,6 +448,7 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
 	struct list_head *this, *tmp;
 	struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL;
 	struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL;
+	struct scsi_vpd *vpd_pgb0 = NULL, *vpd_pgb1 = NULL, *vpd_pgb2 = NULL;
 	unsigned long flags;
 	struct module *mod;
 
@@ -490,6 +491,12 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
 				       lockdep_is_held(&sdev->inquiry_mutex));
 	vpd_pg89 = rcu_replace_pointer(sdev->vpd_pg89, vpd_pg89,
 				       lockdep_is_held(&sdev->inquiry_mutex));
+	vpd_pgb0 = rcu_replace_pointer(sdev->vpd_pgb0, vpd_pgb0,
+				       lockdep_is_held(&sdev->inquiry_mutex));
+	vpd_pgb1 = rcu_replace_pointer(sdev->vpd_pgb1, vpd_pgb1,
+				       lockdep_is_held(&sdev->inquiry_mutex));
+	vpd_pgb2 = rcu_replace_pointer(sdev->vpd_pgb2, vpd_pgb2,
+				       lockdep_is_held(&sdev->inquiry_mutex));
 	mutex_unlock(&sdev->inquiry_mutex);
 
 	if (vpd_pg0)
@@ -500,6 +507,12 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
 		kfree_rcu(vpd_pg80, rcu);
 	if (vpd_pg89)
 		kfree_rcu(vpd_pg89, rcu);
+	if (vpd_pgb0)
+		kfree_rcu(vpd_pgb0, rcu);
+	if (vpd_pgb1)
+		kfree_rcu(vpd_pgb1, rcu);
+	if (vpd_pgb2)
+		kfree_rcu(vpd_pgb2, rcu);
 	kfree(sdev->inquiry);
 	kfree(sdev);
 
@@ -913,6 +926,9 @@ static struct bin_attribute dev_attr_vpd_##_page = {		\
 sdev_vpd_pg_attr(pg83);
 sdev_vpd_pg_attr(pg80);
 sdev_vpd_pg_attr(pg89);
+sdev_vpd_pg_attr(pgb0);
+sdev_vpd_pg_attr(pgb1);
+sdev_vpd_pg_attr(pgb2);
 sdev_vpd_pg_attr(pg0);
 
 static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
@@ -1250,6 +1266,15 @@ static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
 	if (attr == &dev_attr_vpd_pg89 && !sdev->vpd_pg89)
 		return 0;
 
+	if (attr == &dev_attr_vpd_pgb0 && !sdev->vpd_pgb0)
+		return 0;
+
+	if (attr == &dev_attr_vpd_pgb1 && !sdev->vpd_pgb1)
+		return 0;
+
+	if (attr == &dev_attr_vpd_pgb2 && !sdev->vpd_pgb2)
+		return 0;
+
 	return S_IRUGO;
 }
 
@@ -1296,6 +1321,9 @@ static struct bin_attribute *scsi_sdev_bin_attrs[] = {
 	&dev_attr_vpd_pg83,
 	&dev_attr_vpd_pg80,
 	&dev_attr_vpd_pg89,
+	&dev_attr_vpd_pgb0,
+	&dev_attr_vpd_pgb1,
+	&dev_attr_vpd_pgb2,
 	&dev_attr_inquiry,
 	NULL
 };
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 144d3a801c8d..fd6a803ac8cd 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -149,6 +149,10 @@ struct scsi_device {
 	struct scsi_vpd __rcu *vpd_pg83;
 	struct scsi_vpd __rcu *vpd_pg80;
 	struct scsi_vpd __rcu *vpd_pg89;
+	struct scsi_vpd __rcu *vpd_pgb0;
+	struct scsi_vpd __rcu *vpd_pgb1;
+	struct scsi_vpd __rcu *vpd_pgb2;
+
 	struct scsi_target      *sdev_target;
 
 	blist_flags_t		sdev_bflags; /* black/white flags as also found in
-- 
2.32.0