mount_pseudo(): drop 'name' argument, switch to d_make_root()

Once upon a time we used to set ->d_name of e.g. pipefs root
so that d_path() on pipes would work.  These days it's
completely pointless - dentries of pipes are not even connected
to pipefs root.  However, mount_pseudo() had set the root
dentry name (passed as the second argument) and callers
kept inventing names to pass to it.  Including those that
didn't *have* any non-root dentries to start with...

All of that had been pointless for about 8 years now; it's
time to get rid of that cargo-culting...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

5 files changed, 5 insertions, 12 deletions

diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 35f051efaf35..f83814eea5ad 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -440,7 +440,7 @@ static const struct super_operations dax_sops = {
 static struct dentry *dax_mount(struct file_system_type *fs_type,
 		int flags, const char *dev_name, void *data)
 {
-	return mount_pseudo(fs_type, "dax:", &dax_sops, NULL, DAXFS_MAGIC);
+	return mount_pseudo(fs_type, &dax_sops, NULL, DAXFS_MAGIC);
 }
 
 static struct file_system_type dax_fs_type = {
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 8b44ac9a92ae..48365c62a190 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -535,11 +535,7 @@ static struct vfsmount *drm_fs_mnt;
 static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags,
 				   const char *dev_name, void *data)
 {
-	return mount_pseudo(fs_type,
-			    "drm:",
-			    NULL,
-			    NULL,
-			    0x010203ff);
+	return mount_pseudo(fs_type, NULL, NULL, 0x010203ff);
 }
 
 static struct file_system_type drm_fs_type = {
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index a59c7af79873..1f2b0535a8cf 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -40,8 +40,7 @@ static struct vfsmount *cxl_vfs_mount;
 static struct dentry *cxl_fs_mount(struct file_system_type *fs_type, int flags,
 				const char *dev_name, void *data)
 {
-	return mount_pseudo(fs_type, "cxl:", NULL, NULL,
-			CXL_PSEUDO_FS_MAGIC);
+	return mount_pseudo(fs_type, NULL, NULL, CXL_PSEUDO_FS_MAGIC);
 }
 
 static struct file_system_type cxl_fs_type = {
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 31cfdf2c8c30..38e1fbd2b406 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -48,8 +48,7 @@ static struct dentry *ocxlflash_fs_mount(struct file_system_type *fs_type,
 					 int flags, const char *dev_name,
 					 void *data)
 {
-	return mount_pseudo(fs_type, "ocxlflash:", NULL, NULL,
-			    OCXLFLASH_FS_MAGIC);
+	return mount_pseudo(fs_type, NULL, NULL, OCXLFLASH_FS_MAGIC);
 }
 
 static struct file_system_type ocxlflash_fs_type = {
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 554d1a98d193..62bafc4f2662 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -761,8 +761,7 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
 static struct dentry *balloon_mount(struct file_system_type *fs_type,
 		int flags, const char *dev_name, void *data)
 {
-	return mount_pseudo(fs_type, "balloon-kvm:", NULL, NULL,
-				BALLOON_KVM_MAGIC);
+	return mount_pseudo(fs_type, NULL, NULL, BALLOON_KVM_MAGIC);
 }
 
 static struct file_system_type balloon_fs = {