diff --git a/Documentation/filesystems/locking.rst b/Documentation/filesystems/locking.rst
index 9605928c11b5c..c63890845d956 100644
--- a/Documentation/filesystems/locking.rst
+++ b/Documentation/filesystems/locking.rst
@@ -64,7 +64,7 @@ prototypes::
 	int (*mkdir) (struct mnt_idmap *, struct inode *,struct dentry *,umode_t);
 	int (*rmdir) (struct inode *,struct dentry *);
 	int (*mknod) (struct mnt_idmap *, struct inode *,struct dentry *,umode_t,dev_t);
-	int (*rename) (struct inode *, struct dentry *,
+	int (*rename) (struct mnt_idmap *, struct inode *, struct dentry *,
 			struct inode *, struct dentry *, unsigned int);
 	int (*readlink) (struct dentry *, char __user *,int);
 	const char *(*get_link) (struct dentry *, struct inode *, struct delayed_call *);
diff --git a/Documentation/filesystems/vfs.rst b/Documentation/filesystems/vfs.rst
index e2cb36f15ce4f..263fcc57b71f2 100644
--- a/Documentation/filesystems/vfs.rst
+++ b/Documentation/filesystems/vfs.rst
@@ -429,7 +429,7 @@ As of kernel 2.6.22, the following members are defined:
 		int (*mkdir) (struct mnt_idmap *, struct inode *,struct dentry *,umode_t);
 		int (*rmdir) (struct inode *,struct dentry *);
 		int (*mknod) (struct mnt_idmap *, struct inode *,struct dentry *,umode_t,dev_t);
-		int (*rename) (struct user_namespace *, struct inode *, struct dentry *,
+		int (*rename) (struct mnt_idmap *, struct inode *, struct dentry *,
 			       struct inode *, struct dentry *, unsigned int);
 		int (*readlink) (struct dentry *, char __user *,int);
 		const char *(*get_link) (struct dentry *, struct inode *,
diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c
index 09b2ce7e4c345..348d63d1e3d38 100644
--- a/drivers/android/binderfs.c
+++ b/drivers/android/binderfs.c
@@ -352,7 +352,7 @@ static inline bool is_binderfs_control_device(const struct dentry *dentry)
 	return info->control_dentry == dentry;
 }
 
-static int binderfs_rename(struct user_namespace *mnt_userns,
+static int binderfs_rename(struct mnt_idmap *idmap,
 			   struct inode *old_dir, struct dentry *old_dentry,
 			   struct inode *new_dir, struct dentry *new_dentry,
 			   unsigned int flags)
@@ -361,7 +361,7 @@ static int binderfs_rename(struct user_namespace *mnt_userns,
 	    is_binderfs_control_device(new_dentry))
 		return -EPERM;
 
-	return simple_rename(&init_user_ns, old_dir, old_dentry, new_dir,
+	return simple_rename(idmap, old_dir, old_dentry, new_dir,
 			     new_dentry, flags);
 }
 
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 6acabc2e7dc9d..f3f74d197b5d2 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -151,7 +151,7 @@ extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
 				      unsigned int flags);
 extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d);
 extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d);
-extern int v9fs_vfs_rename(struct user_namespace *mnt_userns,
+extern int v9fs_vfs_rename(struct mnt_idmap *idmap,
 			   struct inode *old_dir, struct dentry *old_dentry,
 			   struct inode *new_dir, struct dentry *new_dentry,
 			   unsigned int flags);
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 1a21b001f377b..a714df142d05e 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -908,7 +908,7 @@ int v9fs_vfs_rmdir(struct inode *i, struct dentry *d)
 
 /**
  * v9fs_vfs_rename - VFS hook to rename an inode
- * @mnt_userns: The user namespace of the mount
+ * @idmap: The idmap of the mount
  * @old_dir:  old dir inode
  * @old_dentry: old dentry
  * @new_dir: new dir inode
@@ -918,7 +918,7 @@ int v9fs_vfs_rmdir(struct inode *i, struct dentry *d)
  */
 
 int
-v9fs_vfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+v9fs_vfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		struct dentry *old_dentry, struct inode *new_dir,
 		struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 8f70a839c3119..60685ec76d983 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -177,7 +177,7 @@ extern int	affs_link(struct dentry *olddentry, struct inode *dir,
 extern int	affs_symlink(struct mnt_idmap *idmap,
 			struct inode *dir, struct dentry *dentry,
 			const char *symname);
-extern int	affs_rename2(struct user_namespace *mnt_userns,
+extern int	affs_rename2(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags);
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index e0300f0b6fc35..d12ccfd2a83de 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -503,7 +503,7 @@ affs_xrename(struct inode *old_dir, struct dentry *old_dentry,
 	return retval;
 }
 
-int affs_rename2(struct user_namespace *mnt_userns, struct inode *old_dir,
+int affs_rename2(struct mnt_idmap *idmap, struct inode *old_dir,
 		 struct dentry *old_dentry, struct inode *new_dir,
 		 struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index c2ada2fc51b44..82690d1dd49a0 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -38,7 +38,7 @@ static int afs_link(struct dentry *from, struct inode *dir,
 		    struct dentry *dentry);
 static int afs_symlink(struct mnt_idmap *idmap, struct inode *dir,
 		       struct dentry *dentry, const char *content);
-static int afs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int afs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags);
 static bool afs_dir_release_folio(struct folio *folio, gfp_t gfp_flags);
@@ -1897,7 +1897,7 @@ static const struct afs_operation_ops afs_rename_operation = {
 /*
  * rename a file in an AFS filesystem and/or move it between directories
  */
-static int afs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int afs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index d1b075b4dce88..1e24ce889a15a 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -75,7 +75,7 @@ static int bad_inode_mknod(struct mnt_idmap *idmap, struct inode *dir,
 	return -EIO;
 }
 
-static int bad_inode_rename2(struct user_namespace *mnt_userns,
+static int bad_inode_rename2(struct mnt_idmap *idmap,
 			     struct inode *old_dir, struct dentry *old_dentry,
 			     struct inode *new_dir, struct dentry *new_dentry,
 			     unsigned int flags)
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index f9d4ce5fff9fa..fa3e66bc9be3e 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -199,7 +199,7 @@ static int bfs_unlink(struct inode *dir, struct dentry *dentry)
 	return error;
 }
 
-static int bfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int bfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 438b5142be448..dbb6790d0268c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9547,10 +9547,11 @@ static int btrfs_rename(struct user_namespace *mnt_userns,
 	return ret;
 }
 
-static int btrfs_rename2(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int btrfs_rename2(struct mnt_idmap *idmap, struct inode *old_dir,
 			 struct dentry *old_dentry, struct inode *new_dir,
 			 struct dentry *new_dentry, unsigned int flags)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	int ret;
 
 	if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 7ad56d5a63b3c..0ced8b570e424 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1269,7 +1269,7 @@ static int ceph_unlink(struct inode *dir, struct dentry *dentry)
 	return err;
 }
 
-static int ceph_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int ceph_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 14bb46ab0874b..b58cd737b21e3 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -62,7 +62,7 @@ extern int cifs_mknod(struct mnt_idmap *, struct inode *, struct dentry *,
 extern int cifs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *,
 		      umode_t);
 extern int cifs_rmdir(struct inode *, struct dentry *);
-extern int cifs_rename2(struct user_namespace *, struct inode *,
+extern int cifs_rename2(struct mnt_idmap *, struct inode *,
 			struct dentry *, struct inode *, struct dentry *,
 			unsigned int);
 extern int cifs_revalidate_file_attr(struct file *filp);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index ce4f086db2dfa..11cdc7cfe0baf 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2138,7 +2138,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
 }
 
 int
-cifs_rename2(struct user_namespace *mnt_userns, struct inode *source_dir,
+cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir,
 	     struct dentry *source_dentry, struct inode *target_dir,
 	     struct dentry *target_dentry, unsigned int flags)
 {
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index ff90117f1eec5..7fdf8e37a1df6 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -295,7 +295,7 @@ static int coda_rmdir(struct inode *dir, struct dentry *de)
 }
 
 /* rename */
-static int coda_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int coda_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index ac76e6c6ac56a..bf397f6a6a33f 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -837,7 +837,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
 
 	take_dentry_name_snapshot(&old_name, old_dentry);
 
-	error = simple_rename(&init_user_ns, d_inode(old_dir), old_dentry,
+	error = simple_rename(&nop_mnt_idmap, d_inode(old_dir), old_dentry,
 			      d_inode(new_dir), dentry, 0);
 	if (error) {
 		release_dentry_name_snapshot(&old_name);
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 6a2052d234b2d..cf85901d7a5de 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -574,7 +574,7 @@ ecryptfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
 }
 
 static int
-ecryptfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+ecryptfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		struct dentry *old_dentry, struct inode *new_dir,
 		struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index 99e86caba5449..02aab4c3a5f73 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -1285,7 +1285,7 @@ static int __exfat_rename(struct inode *old_parent_inode,
 	return ret;
 }
 
-static int exfat_rename(struct user_namespace *mnt_userns,
+static int exfat_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 91219a6a5739d..8b5dfa46bcc87 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -315,7 +315,7 @@ static int ext2_rmdir (struct inode * dir, struct dentry *dentry)
 	return err;
 }
 
-static int ext2_rename (struct user_namespace * mnt_userns,
+static int ext2_rename (struct mnt_idmap * idmap,
 			struct inode * old_dir, struct dentry * old_dentry,
 			struct inode * new_dir, struct dentry * new_dentry,
 			unsigned int flags)
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 0aa190e03b864..feb58508978e0 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -4162,11 +4162,12 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	return retval;
 }
 
-static int ext4_rename2(struct user_namespace *mnt_userns,
+static int ext4_rename2(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	int err;
 
 	if (unlikely(ext4_forced_shutdown(EXT4_SB(old_dir->i_sb))))
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 39f76a1d8b90e..a87b9fcaf923f 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -1299,11 +1299,12 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	return err;
 }
 
-static int f2fs_rename2(struct user_namespace *mnt_userns,
+static int f2fs_rename2(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	int err;
 
 	if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index b98025f21d9bc..2116c486843b7 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -594,7 +594,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
 }
 
 /***** Rename, a wrapper for rename_same_dir & rename_diff_dir */
-static int msdos_rename(struct user_namespace *mnt_userns,
+static int msdos_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index f5f4caff75e27..fceda1de48055 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -1158,7 +1158,7 @@ static int vfat_rename_exchange(struct inode *old_dir, struct dentry *old_dentry
 	goto out;
 }
 
-static int vfat_rename2(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int vfat_rename2(struct mnt_idmap *idmap, struct inode *old_dir,
 			struct dentry *old_dentry, struct inode *new_dir,
 			struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index f6aa799fb584d..c95d610fa63fd 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -998,7 +998,7 @@ static int fuse_rename_common(struct inode *olddir, struct dentry *oldent,
 	return err;
 }
 
-static int fuse_rename2(struct user_namespace *mnt_userns, struct inode *olddir,
+static int fuse_rename2(struct mnt_idmap *idmap, struct inode *olddir,
 			struct dentry *oldent, struct inode *newdir,
 			struct dentry *newent, unsigned int flags)
 {
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index ed015ab662878..f4af558078088 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1766,7 +1766,7 @@ static int gfs2_exchange(struct inode *odir, struct dentry *odentry,
 	return error;
 }
 
-static int gfs2_rename2(struct user_namespace *mnt_userns, struct inode *odir,
+static int gfs2_rename2(struct mnt_idmap *idmap, struct inode *odir,
 			struct dentry *odentry, struct inode *ndir,
 			struct dentry *ndentry, unsigned int flags)
 {
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index f8141c407d552..3e1e3dcf0b488 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -280,7 +280,7 @@ static int hfs_remove(struct inode *dir, struct dentry *dentry)
  * new file/directory.
  * XXX: how do you handle must_be dir?
  */
-static int hfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int hfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 19caa2d953a78..56fb5f1312e71 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -529,7 +529,7 @@ static int hfsplus_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 	return hfsplus_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFDIR, 0);
 }
 
-static int hfsplus_rename(struct user_namespace *mnt_userns,
+static int hfsplus_rename(struct mnt_idmap *idmap,
 			  struct inode *old_dir, struct dentry *old_dentry,
 			  struct inode *new_dir, struct dentry *new_dentry,
 			  unsigned int flags)
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index b7f512d2c6692..65dfc7457034b 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -734,7 +734,7 @@ static int hostfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
 	return err;
 }
 
-static int hostfs_rename2(struct user_namespace *mnt_userns,
+static int hostfs_rename2(struct mnt_idmap *idmap,
 			  struct inode *old_dir, struct dentry *old_dentry,
 			  struct inode *new_dir, struct dentry *new_dentry,
 			  unsigned int flags)
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 8415137a064d8..69fb40b2c99a9 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -512,7 +512,7 @@ const struct address_space_operations hpfs_symlink_aops = {
 	.read_folio	= hpfs_symlink_read_folio
 };
 
-static int hpfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int hpfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 9e1110de6f0b2..5075a0a6d594e 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -37,7 +37,7 @@ static int jffs2_mkdir (struct mnt_idmap *, struct inode *,struct dentry *,
 static int jffs2_rmdir (struct inode *,struct dentry *);
 static int jffs2_mknod (struct mnt_idmap *, struct inode *,struct dentry *,
 			umode_t,dev_t);
-static int jffs2_rename (struct user_namespace *, struct inode *,
+static int jffs2_rename (struct mnt_idmap *, struct inode *,
 			 struct dentry *, struct inode *, struct dentry *,
 			 unsigned int);
 
@@ -762,7 +762,7 @@ static int jffs2_mknod (struct mnt_idmap *idmap, struct inode *dir_i,
 	return ret;
 }
 
-static int jffs2_rename (struct user_namespace *mnt_userns,
+static int jffs2_rename (struct mnt_idmap *idmap,
 			 struct inode *old_dir_i, struct dentry *old_dentry,
 			 struct inode *new_dir_i, struct dentry *new_dentry,
 			 unsigned int flags)
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 917c1237cf934..b29d68b5eec53 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1059,7 +1059,7 @@ static int jfs_symlink(struct mnt_idmap *idmap, struct inode *dip,
  *
  * FUNCTION:	rename a file or directory
  */
-static int jfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int jfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 4f2d521bedabb..e3181c3e19886 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -1238,7 +1238,7 @@ static int kernfs_iop_rmdir(struct inode *dir, struct dentry *dentry)
 	return ret;
 }
 
-static int kernfs_iop_rename(struct user_namespace *mnt_userns,
+static int kernfs_iop_rename(struct mnt_idmap *idmap,
 			     struct inode *old_dir, struct dentry *old_dentry,
 			     struct inode *new_dir, struct dentry *new_dentry,
 			     unsigned int flags)
diff --git a/fs/libfs.c b/fs/libfs.c
index aae36b224508f..152405c00f89d 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -473,7 +473,7 @@ int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
 }
 EXPORT_SYMBOL_GPL(simple_rename_exchange);
 
-int simple_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+int simple_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		  struct dentry *old_dentry, struct inode *new_dir,
 		  struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index b6b4b0a1608e6..aa308b12f40d3 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -184,7 +184,7 @@ static int minix_rmdir(struct inode * dir, struct dentry *dentry)
 	return err;
 }
 
-static int minix_rename(struct user_namespace *mnt_userns,
+static int minix_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
diff --git a/fs/namei.c b/fs/namei.c
index 74c194c0ceab1..3be66e8b418fe 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4786,7 +4786,7 @@ int vfs_rename(struct renamedata *rd)
 		if (error)
 			goto out;
 	}
-	error = old_dir->i_op->rename(new_mnt_userns, old_dir, old_dentry,
+	error = old_dir->i_op->rename(rd->new_mnt_idmap, old_dir, old_dentry,
 				      new_dir, new_dentry, flags);
 	if (error)
 		goto out;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 19b4926b93cbc..01eeae59599be 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2642,7 +2642,7 @@ nfs_unblock_rename(struct rpc_task *task, struct nfs_renamedata *data)
  * If these conditions are met, we can drop the dentries before doing
  * the rename.
  */
-int nfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+int nfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 	       struct dentry *old_dentry, struct inode *new_dir,
 	       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index d6df06d61f282..41468c21291d4 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -395,7 +395,7 @@ int nfs_symlink(struct mnt_idmap *, struct inode *, struct dentry *,
 int nfs_link(struct dentry *, struct inode *, struct dentry *);
 int nfs_mknod(struct mnt_idmap *, struct inode *, struct dentry *, umode_t,
 	      dev_t);
-int nfs_rename(struct user_namespace *, struct inode *, struct dentry *,
+int nfs_rename(struct mnt_idmap *, struct inode *, struct dentry *,
 	       struct inode *, struct dentry *, unsigned int);
 
 #ifdef CONFIG_NFS_V4_2
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 9cc52d8fa0228..c7024da8f1e25 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -340,7 +340,7 @@ static int nilfs_rmdir(struct inode *dir, struct dentry *dentry)
 	return err;
 }
 
-static int nilfs_rename(struct user_namespace *mnt_userns,
+static int nilfs_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c
index 3cd1a18c6c02d..13731de390104 100644
--- a/fs/ntfs3/namei.c
+++ b/fs/ntfs3/namei.c
@@ -233,7 +233,7 @@ static int ntfs_rmdir(struct inode *dir, struct dentry *dentry)
 /*
  * ntfs_rename - inode_operations::rename
  */
-static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *dir,
+static int ntfs_rename(struct mnt_idmap *idmap, struct inode *dir,
 		       struct dentry *dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, u32 flags)
 {
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index e588009cb04e1..13433e774e3d1 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1194,7 +1194,7 @@ static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
 		ocfs2_inode_unlock(inode2, 1);
 }
 
-static int ocfs2_rename(struct user_namespace *mnt_userns,
+static int ocfs2_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir,
 			struct dentry *old_dentry,
 			struct inode *new_dir,
diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
index 34138f46f7e73..82cf7e9a665fa 100644
--- a/fs/omfs/dir.c
+++ b/fs/omfs/dir.c
@@ -370,7 +370,7 @@ static bool omfs_fill_chain(struct inode *dir, struct dir_context *ctx,
 	return true;
 }
 
-static int omfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int omfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c
index 9243c35fb478e..77518e248cf79 100644
--- a/fs/orangefs/namei.c
+++ b/fs/orangefs/namei.c
@@ -375,7 +375,7 @@ static int orangefs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 	return ret;
 }
 
-static int orangefs_rename(struct user_namespace *mnt_userns,
+static int orangefs_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir,
 			struct dentry *old_dentry,
 			struct inode *new_dir,
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index ff18a6a16b01e..17d5091562156 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -1075,7 +1075,7 @@ static int ovl_set_redirect(struct dentry *dentry, bool samedir)
 	return err;
 }
 
-static int ovl_rename(struct user_namespace *mnt_userns, struct inode *olddir,
+static int ovl_rename(struct mnt_idmap *idmap, struct inode *olddir,
 		      struct dentry *old, struct inode *newdir,
 		      struct dentry *new, unsigned int flags)
 {
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 4c3da7ccca345..f80b4a6ecf51e 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -1311,7 +1311,7 @@ static void set_ino_in_dir_entry(struct reiserfs_dir_entry *de,
  * one path. If it holds 2 or more, it can get into endless waiting in
  * get_empty_nodes or its clones
  */
-static int reiserfs_rename(struct user_namespace *mnt_userns,
+static int reiserfs_rename(struct mnt_idmap *idmap,
 			   struct inode *old_dir, struct dentry *old_dentry,
 			   struct inode *new_dir, struct dentry *new_dentry,
 			   unsigned int flags)
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index e44c5f5f5b0ce..ecd424461511f 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -189,7 +189,7 @@ static int sysv_rmdir(struct inode * dir, struct dentry * dentry)
  * Anybody can rename anything with this: the permission checks are left to the
  * higher-level routines.
  */
-static int sysv_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int sysv_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		       struct dentry *old_dentry, struct inode *new_dir,
 		       struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 9f521a8edebfd..e11a2d76fb0e5 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1606,7 +1606,7 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry,
 	return err;
 }
 
-static int ubifs_rename(struct user_namespace *mnt_userns,
+static int ubifs_rename(struct mnt_idmap *idmap,
 			struct inode *old_dir, struct dentry *old_dentry,
 			struct inode *new_dir, struct dentry *new_dentry,
 			unsigned int flags)
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 7ecfeaad41b17..c93b10513babe 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1073,7 +1073,7 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir,
 /* Anybody can rename anything with this: the permission checks are left to the
  * higher-level routines.
  */
-static int udf_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int udf_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 85afc26d559dd..36154b5aca6dc 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -243,7 +243,7 @@ static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
 	return err;
 }
 
-static int ufs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+static int ufs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		      struct dentry *old_dentry, struct inode *new_dir,
 		      struct dentry *new_dentry, unsigned int flags)
 {
diff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c
index 4ec79548e9f09..075f15c43c780 100644
--- a/fs/vboxsf/dir.c
+++ b/fs/vboxsf/dir.c
@@ -387,7 +387,7 @@ static int vboxsf_dir_unlink(struct inode *parent, struct dentry *dentry)
 	return 0;
 }
 
-static int vboxsf_dir_rename(struct user_namespace *mnt_userns,
+static int vboxsf_dir_rename(struct mnt_idmap *idmap,
 			     struct inode *old_parent,
 			     struct dentry *old_dentry,
 			     struct inode *new_parent,
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 249b0d8fcd844..fd0c62e0ddd26 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -446,13 +446,14 @@ xfs_vn_symlink(
 
 STATIC int
 xfs_vn_rename(
-	struct user_namespace	*mnt_userns,
+	struct mnt_idmap	*idmap,
 	struct inode		*odir,
 	struct dentry		*odentry,
 	struct inode		*ndir,
 	struct dentry		*ndentry,
 	unsigned int		flags)
 {
+	struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
 	struct inode	*new_inode = d_inode(ndentry);
 	int		omode = 0;
 	int		error;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a28117398e71b..8d287bd2bf9be 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2150,7 +2150,7 @@ struct inode_operations {
 	int (*rmdir) (struct inode *,struct dentry *);
 	int (*mknod) (struct mnt_idmap *, struct inode *,struct dentry *,
 		      umode_t,dev_t);
-	int (*rename) (struct user_namespace *, struct inode *, struct dentry *,
+	int (*rename) (struct mnt_idmap *, struct inode *, struct dentry *,
 			struct inode *, struct dentry *, unsigned int);
 	int (*setattr) (struct mnt_idmap *, struct dentry *, struct iattr *);
 	int (*getattr) (struct mnt_idmap *, const struct path *,
@@ -3323,7 +3323,7 @@ extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
 extern int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
 				  struct inode *new_dir, struct dentry *new_dentry);
-extern int simple_rename(struct user_namespace *, struct inode *,
+extern int simple_rename(struct mnt_idmap *, struct inode *,
 			 struct dentry *, struct inode *, struct dentry *,
 			 unsigned int);
 extern void simple_recursive_removal(struct dentry *,
diff --git a/mm/shmem.c b/mm/shmem.c
index d66f75c5e85e5..c9998c2220d35 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3045,7 +3045,7 @@ static int shmem_rmdir(struct inode *dir, struct dentry *dentry)
 	return shmem_unlink(dir, dentry);
 }
 
-static int shmem_whiteout(struct user_namespace *mnt_userns,
+static int shmem_whiteout(struct mnt_idmap *idmap,
 			  struct inode *old_dir, struct dentry *old_dentry)
 {
 	struct dentry *whiteout;
@@ -3078,7 +3078,7 @@ static int shmem_whiteout(struct user_namespace *mnt_userns,
  * it exists so that the VFS layer correctly free's it when it
  * gets overwritten.
  */
-static int shmem_rename2(struct user_namespace *mnt_userns,
+static int shmem_rename2(struct mnt_idmap *idmap,
 			 struct inode *old_dir, struct dentry *old_dentry,
 			 struct inode *new_dir, struct dentry *new_dentry,
 			 unsigned int flags)
@@ -3098,7 +3098,7 @@ static int shmem_rename2(struct user_namespace *mnt_userns,
 	if (flags & RENAME_WHITEOUT) {
 		int error;
 
-		error = shmem_whiteout(&init_user_ns, old_dir, old_dentry);
+		error = shmem_whiteout(&nop_mnt_idmap, old_dir, old_dentry);
 		if (error)
 			return error;
 	}