Merge tag 'vfs-6.6-merge-2' of ssh://gitolite.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull filesystem freezing updates from Darrick Wong:

New code for 6.6:

 * Allow the kernel to initiate a freeze of a filesystem.  The kernel
   and userspace can both hold a freeze on a filesystem at the same
   time; the freeze is not lifted until /both/ holders lift it.  This
   will enable us to fix a longstanding bug in XFS online fsck.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Message-Id: <20230822182604.GB11286@frogsfrogsfrogs>
Signed-off-by: Christian Brauner <brauner@kernel.org>

1 files changed, 14 insertions, 13 deletions

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index da340f11c5f5..caaf563d38ae 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2891,14 +2891,11 @@ static int iommu_setup_default_domain(struct iommu_group *group,
 		ret = __iommu_group_set_domain_internal(
 			group, dom, IOMMU_SET_DOMAIN_MUST_SUCCEED);
 		if (WARN_ON(ret))
-			goto out_free;
+			goto out_free_old;
 	} else {
 		ret = __iommu_group_set_domain(group, dom);
-		if (ret) {
-			iommu_domain_free(dom);
-			group->default_domain = old_dom;
-			return ret;
-		}
+		if (ret)
+			goto err_restore_def_domain;
 	}
 
 	/*
@@ -2911,20 +2908,24 @@ static int iommu_setup_default_domain(struct iommu_group *group,
 		for_each_group_device(group, gdev) {
 			ret = iommu_create_device_direct_mappings(dom, gdev->dev);
 			if (ret)
-				goto err_restore;
+				goto err_restore_domain;
 		}
 	}
 
-err_restore:
-	if (old_dom) {
+out_free_old:
+	if (old_dom)
+		iommu_domain_free(old_dom);
+	return ret;
+
+err_restore_domain:
+	if (old_dom)
 		__iommu_group_set_domain_internal(
 			group, old_dom, IOMMU_SET_DOMAIN_MUST_SUCCEED);
+err_restore_def_domain:
+	if (old_dom) {
 		iommu_domain_free(dom);
-		old_dom = NULL;
+		group->default_domain = old_dom;
 	}
-out_free:
-	if (old_dom)
-		iommu_domain_free(old_dom);
 	return ret;
 }