diff --git a/Documentation/filesystems/locking.rst b/Documentation/filesystems/locking.rst
index c63890845d95..429b8e4a6284 100644
--- a/Documentation/filesystems/locking.rst
+++ b/Documentation/filesystems/locking.rst
@@ -79,7 +79,7 @@ prototypes::
 	int (*atomic_open)(struct inode *, struct dentry *,
 				struct file *, unsigned open_flag,
 				umode_t create_mode);
-	int (*tmpfile) (struct user_namespace *, struct inode *,
+	int (*tmpfile) (struct mnt_idmap *, struct inode *,
 			struct file *, umode_t);
 	int (*fileattr_set)(struct user_namespace *mnt_userns,
 			    struct dentry *dentry, struct fileattr *fa);
diff --git a/Documentation/filesystems/vfs.rst b/Documentation/filesystems/vfs.rst
index 263fcc57b71f..3fcadfcf4e3a 100644
--- a/Documentation/filesystems/vfs.rst
+++ b/Documentation/filesystems/vfs.rst
@@ -442,7 +442,7 @@ As of kernel 2.6.22, the following members are defined:
 		void (*update_time)(struct inode *, struct timespec *, int);
 		int (*atomic_open)(struct inode *, struct dentry *, struct file *,
 				   unsigned open_flag, umode_t create_mode);
-		int (*tmpfile) (struct user_namespace *, struct inode *, struct file *, umode_t);
+		int (*tmpfile) (struct mnt_idmap *, struct inode *, struct file *, umode_t);
 		struct posix_acl * (*get_acl)(struct user_namespace *, struct dentry *, int);
 	        int (*set_acl)(struct user_namespace *, struct dentry *, struct posix_acl *, int);
 		int (*fileattr_set)(struct user_namespace *mnt_userns,
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 1e24ce889a15..4bdf40b187ff 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -146,7 +146,7 @@ static int bad_inode_atomic_open(struct inode *inode, struct dentry *dentry,
 	return -EIO;
 }
 
-static int bad_inode_tmpfile(struct user_namespace *mnt_userns,
+static int bad_inode_tmpfile(struct mnt_idmap *idmap,
 			     struct inode *inode, struct file *file,
 			     umode_t mode)
 {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index dbb6790d0268..c10157a5a6f8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10095,9 +10095,10 @@ static int btrfs_permission(struct user_namespace *mnt_userns,
 	return generic_permission(mnt_userns, inode, mask);
 }
 
-static int btrfs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int btrfs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			 struct file *file, umode_t mode)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb);
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(dir)->root;
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 8b5dfa46bcc8..81808e3d11c1 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -119,7 +119,7 @@ static int ext2_create (struct mnt_idmap * idmap,
 	return ext2_add_nondir(dentry, inode);
 }
 
-static int ext2_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int ext2_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			struct file *file, umode_t mode)
 {
 	struct inode *inode = ext2_new_inode(dir, mode, NULL);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index feb58508978e..74a2c3eae066 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2863,9 +2863,10 @@ retry:
 	return err;
 }
 
-static int ext4_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int ext4_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			struct file *file, umode_t mode)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	handle_t *handle;
 	struct inode *inode;
 	int err, retries = 0;
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index a87b9fcaf923..938032cbc1a8 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -911,9 +911,10 @@ out:
 	return err;
 }
 
-static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			struct file *file, umode_t mode)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 	int err;
 
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index c95d610fa63f..ca07660a76a8 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -802,7 +802,7 @@ static int fuse_create(struct mnt_idmap *idmap, struct inode *dir,
 	return fuse_mknod(&nop_mnt_idmap, dir, entry, mode, 0);
 }
 
-static int fuse_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int fuse_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			struct file *file, umode_t mode)
 {
 	struct fuse_conn *fc = get_fuse_conn(dir);
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index b37e29dc125d..e1acab15e70d 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1050,7 +1050,7 @@ static int hugetlbfs_create(struct mnt_idmap *idmap,
 	return hugetlbfs_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFREG, 0);
 }
 
-static int hugetlbfs_tmpfile(struct user_namespace *mnt_userns,
+static int hugetlbfs_tmpfile(struct mnt_idmap *idmap,
 			     struct inode *dir, struct file *file,
 			     umode_t mode)
 {
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index aa308b12f40d..39ebe10d6a8b 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -52,7 +52,7 @@ static int minix_mknod(struct mnt_idmap *idmap, struct inode *dir,
 	return error;
 }
 
-static int minix_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int minix_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			 struct file *file, umode_t mode)
 {
 	int error;
diff --git a/fs/namei.c b/fs/namei.c
index 3be66e8b418f..34f020ae67ae 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3613,7 +3613,7 @@ static int vfs_tmpfile(struct mnt_idmap *idmap,
 	file->f_path.mnt = parentpath->mnt;
 	file->f_path.dentry = child;
 	mode = vfs_prepare_mode(mnt_userns, dir, mode, mode, mode);
-	error = dir->i_op->tmpfile(mnt_userns, dir, file, mode);
+	error = dir->i_op->tmpfile(idmap, dir, file, mode);
 	dput(child);
 	if (error)
 		return error;
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 2ca68aa81895..ba14f18bd1e5 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -145,7 +145,7 @@ static int ramfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
 	return error;
 }
 
-static int ramfs_tmpfile(struct user_namespace *mnt_userns,
+static int ramfs_tmpfile(struct mnt_idmap *idmap,
 			 struct inode *dir, struct file *file, umode_t mode)
 {
 	struct inode *inode;
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index e11a2d76fb0e..832e6adf9a92 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -426,7 +426,7 @@ static void unlock_2_inodes(struct inode *inode1, struct inode *inode2)
 	mutex_unlock(&ubifs_inode(inode1)->ui_mutex);
 }
 
-static int ubifs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int ubifs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 			 struct file *file, umode_t mode)
 {
 	struct dentry *dentry = file->f_path.dentry;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index c93b10513bab..bdba2206a678 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -625,7 +625,7 @@ static int udf_create(struct mnt_idmap *idmap, struct inode *dir,
 	return udf_add_nondir(dentry, inode);
 }
 
-static int udf_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+static int udf_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 		       struct file *file, umode_t mode)
 {
 	struct inode *inode = udf_new_inode(dir, mode);
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index fd0c62e0ddd2..43e746167d61 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1098,11 +1098,13 @@ xfs_vn_fiemap(
 
 STATIC int
 xfs_vn_tmpfile(
-	struct user_namespace	*mnt_userns,
+	struct mnt_idmap	*idmap,
 	struct inode		*dir,
 	struct file		*file,
 	umode_t			mode)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
+
 	int err = xfs_generic_create(mnt_userns, dir, file->f_path.dentry, mode, 0, file);
 
 	return finish_open_simple(file, err);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8d287bd2bf9b..4855fd071bf8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2162,7 +2162,7 @@ struct inode_operations {
 	int (*atomic_open)(struct inode *, struct dentry *,
 			   struct file *, unsigned open_flag,
 			   umode_t create_mode);
-	int (*tmpfile) (struct user_namespace *, struct inode *,
+	int (*tmpfile) (struct mnt_idmap *, struct inode *,
 			struct file *, umode_t);
 	struct posix_acl *(*get_acl)(struct user_namespace *, struct dentry *,
 				     int);
diff --git a/mm/shmem.c b/mm/shmem.c
index c9998c2220d3..ab289abe5827 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2946,7 +2946,7 @@ out_iput:
 }
 
 static int
-shmem_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
+shmem_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
 	      struct file *file, umode_t mode)
 {
 	struct inode *inode;