From: "Paul E. McKenney" <paulmck@kernel.org>
Date: Mon, 23 Sep 2019 15:26:28 -0700
Subject: drivers/scsi: Replace rcu_swap_protected() with rcu_replace_pointer()
Patch-mainline: v5.5-rc1
Git-commit: c0eaf15cd5d39e79feb81a122975df0bb5a1c106
References: bsc#1171827
This commit replaces the use of rcu_swap_protected() with the more
intuitively appealing rcu_replace_pointer() as a step towards removing
rcu_swap_protected().
Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
[ paulmck: From rcu_replace() to rcu_replace_pointer() per Ingo Molnar. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: <linux-scsi@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/scsi.c | 4 ++--
drivers/scsi/scsi_sysfs.c | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -434,8 +434,8 @@ static void scsi_update_vpd_page(struct
return;
mutex_lock(&sdev->inquiry_mutex);
- rcu_swap_protected(*sdev_vpd_buf, vpd_buf,
- lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_buf = rcu_replace_pointer(*sdev_vpd_buf, vpd_buf,
+ lockdep_is_held(&sdev->inquiry_mutex));
mutex_unlock(&sdev->inquiry_mutex);
if (vpd_buf)
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -466,10 +466,10 @@ static void scsi_device_dev_release_user
sdev->request_queue = NULL;
mutex_lock(&sdev->inquiry_mutex);
- rcu_swap_protected(sdev->vpd_pg80, vpd_pg80,
- lockdep_is_held(&sdev->inquiry_mutex));
- rcu_swap_protected(sdev->vpd_pg83, vpd_pg83,
- lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pg80 = rcu_replace_pointer(sdev->vpd_pg80, vpd_pg80,
+ lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pg83 = rcu_replace_pointer(sdev->vpd_pg83, vpd_pg83,
+ lockdep_is_held(&sdev->inquiry_mutex));
mutex_unlock(&sdev->inquiry_mutex);
if (vpd_pg83)