diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 8586e2f5d243..192997837a56 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -1180,7 +1180,6 @@ static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
 static int ovl_copy_up_flags(struct dentry *dentry, int flags)
 {
 	int err = 0;
-	const struct cred *old_cred;
 	bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED);
 
 	/*
@@ -1200,7 +1199,7 @@ static int ovl_copy_up_flags(struct dentry *dentry, int flags)
 	if (err)
 		return err;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	while (!err) {
 		struct dentry *next;
 		struct dentry *parent = NULL;
@@ -1225,7 +1224,6 @@ static int ovl_copy_up_flags(struct dentry *dentry, int flags)
 		dput(parent);
 		dput(next);
 	}
-	revert_creds(old_cred);
 
 	return err;
 }
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index 0f8b4a719237..3ea5ba7b980d 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -684,12 +684,10 @@ static int ovl_symlink(struct mnt_idmap *idmap, struct inode *dir,
 
 static int ovl_set_link_redirect(struct dentry *dentry)
 {
-	const struct cred *old_cred;
 	int err;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	err = ovl_set_redirect(dentry, false);
-	revert_creds(old_cred);
 
 	return err;
 }
@@ -875,7 +873,6 @@ static void ovl_drop_nlink(struct dentry *dentry)
 static int ovl_do_remove(struct dentry *dentry, bool is_dir)
 {
 	int err;
-	const struct cred *old_cred;
 	bool lower_positive = ovl_lower_positive(dentry);
 	LIST_HEAD(list);
 
@@ -894,12 +891,12 @@ static int ovl_do_remove(struct dentry *dentry, bool is_dir)
 	if (err)
 		goto out;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	if (!lower_positive)
 		err = ovl_remove_upper(dentry, is_dir, &list);
 	else
 		err = ovl_remove_and_whiteout(dentry, &list);
-	revert_creds(old_cred);
+
 	if (!err) {
 		if (is_dir)
 			clear_nlink(dentry->d_inode);
@@ -1146,7 +1143,7 @@ static int ovl_rename(struct mnt_idmap *idmap, struct inode *olddir,
 			goto out;
 	}
 
-	old_cred = ovl_override_creds(old->d_sb);
+	old_cred = override_creds_light(ovl_creds(old->d_sb));
 
 	if (!list_empty(&list)) {
 		opaquedir = ovl_clear_empty(new, &list);
@@ -1279,7 +1276,7 @@ static int ovl_rename(struct mnt_idmap *idmap, struct inode *olddir,
 out_unlock:
 	unlock_rename(new_upperdir, old_upperdir);
 out_revert_creds:
-	revert_creds(old_cred);
+	revert_creds_light(old_cred);
 	if (update_nlink)
 		ovl_nlink_end(new);
 	else
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 05536964d37f..44744196bf21 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -34,7 +34,6 @@ static struct file *ovl_open_realfile(const struct file *file,
 	struct inode *inode = file_inode(file);
 	struct mnt_idmap *real_idmap;
 	struct file *realfile;
-	const struct cred *old_cred;
 	int flags = file->f_flags | OVL_OPEN_FLAGS;
 	int acc_mode = ACC_MODE(flags);
 	int err;
@@ -42,7 +41,7 @@ static struct file *ovl_open_realfile(const struct file *file,
 	if (flags & O_APPEND)
 		acc_mode |= MAY_APPEND;
 
-	old_cred = ovl_override_creds(inode->i_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
 	real_idmap = mnt_idmap(realpath->mnt);
 	err = inode_permission(real_idmap, realinode, MAY_OPEN | acc_mode);
 	if (err) {
@@ -54,7 +53,6 @@ static struct file *ovl_open_realfile(const struct file *file,
 		realfile = backing_file_open(&file->f_path, flags, realpath,
 					     current_cred());
 	}
-	revert_creds(old_cred);
 
 	pr_debug("open(%p[%pD2/%c], 0%o) -> (%p, 0%o)\n",
 		 file, file, ovl_whatisit(inode, realinode), file->f_flags,
@@ -185,7 +183,6 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
 {
 	struct inode *inode = file_inode(file);
 	struct fd real;
-	const struct cred *old_cred;
 	loff_t ret;
 
 	/*
@@ -214,9 +211,8 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
 	ovl_inode_lock(inode);
 	real.file->f_pos = file->f_pos;
 
-	old_cred = ovl_override_creds(inode->i_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
 	ret = vfs_llseek(real.file, offset, whence);
-	revert_creds(old_cred);
 
 	file->f_pos = real.file->f_pos;
 	ovl_inode_unlock(inode);
@@ -388,7 +384,6 @@ static ssize_t ovl_splice_write(struct pipe_inode_info *pipe, struct file *out,
 static int ovl_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
 	struct fd real;
-	const struct cred *old_cred;
 	int ret;
 
 	ret = ovl_sync_status(OVL_FS(file_inode(file)->i_sb));
@@ -401,9 +396,8 @@ static int ovl_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 
 	/* Don't sync lower file for fear of receiving EROFS error */
 	if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) {
-		old_cred = ovl_override_creds(file_inode(file)->i_sb);
+		guard(cred)(ovl_creds(file_inode(file)->i_sb));
 		ret = vfs_fsync_range(real.file, start, end, datasync);
-		revert_creds(old_cred);
 	}
 
 	fdput(real);
@@ -427,7 +421,6 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
 {
 	struct inode *inode = file_inode(file);
 	struct fd real;
-	const struct cred *old_cred;
 	int ret;
 
 	inode_lock(inode);
@@ -441,9 +434,8 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
 	if (ret)
 		goto out_unlock;
 
-	old_cred = ovl_override_creds(file_inode(file)->i_sb);
+	guard(cred)(ovl_creds(file_inode(file)->i_sb));
 	ret = vfs_fallocate(real.file, mode, offset, len);
-	revert_creds(old_cred);
 
 	/* Update size */
 	ovl_file_modified(file);
@@ -459,16 +451,14 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
 static int ovl_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
 {
 	struct fd real;
-	const struct cred *old_cred;
 	int ret;
 
 	ret = ovl_real_fdget(file, &real);
 	if (ret)
 		return ret;
 
-	old_cred = ovl_override_creds(file_inode(file)->i_sb);
+	guard(cred)(ovl_creds(file_inode(file)->i_sb));
 	ret = vfs_fadvise(real.file, offset, len, advice);
-	revert_creds(old_cred);
 
 	fdput(real);
 
@@ -487,7 +477,6 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
 {
 	struct inode *inode_out = file_inode(file_out);
 	struct fd real_in, real_out;
-	const struct cred *old_cred;
 	loff_t ret;
 
 	inode_lock(inode_out);
@@ -509,7 +498,7 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
 		goto out_unlock;
 	}
 
-	old_cred = ovl_override_creds(file_inode(file_out)->i_sb);
+	guard(cred)(ovl_creds(file_inode(file_out)->i_sb));
 	switch (op) {
 	case OVL_COPY:
 		ret = vfs_copy_file_range(real_in.file, pos_in,
@@ -527,7 +516,6 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
 						flags);
 		break;
 	}
-	revert_creds(old_cred);
 
 	/* Update size */
 	ovl_file_modified(file_out);
@@ -579,7 +567,6 @@ static loff_t ovl_remap_file_range(struct file *file_in, loff_t pos_in,
 static int ovl_flush(struct file *file, fl_owner_t id)
 {
 	struct fd real;
-	const struct cred *old_cred;
 	int err;
 
 	err = ovl_real_fdget(file, &real);
@@ -587,9 +574,8 @@ static int ovl_flush(struct file *file, fl_owner_t id)
 		return err;
 
 	if (real.file->f_op->flush) {
-		old_cred = ovl_override_creds(file_inode(file)->i_sb);
+		guard(cred)(ovl_creds(file_inode(file)->i_sb));
 		err = real.file->f_op->flush(real.file, id);
-		revert_creds(old_cred);
 	}
 	fdput(real);
 
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index c63b31a460be..8e399b10ebba 100644
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -26,7 +26,6 @@ int ovl_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);
 	bool full_copy_up = false;
 	struct dentry *upperdentry;
-	const struct cred *old_cred;
 
 	err = setattr_prepare(&nop_mnt_idmap, dentry, attr);
 	if (err)
@@ -79,9 +78,10 @@ int ovl_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 			goto out_put_write;
 
 		inode_lock(upperdentry->d_inode);
-		old_cred = ovl_override_creds(dentry->d_sb);
+		guard(cred)(ovl_creds(dentry->d_sb));
+
 		err = ovl_do_notify_change(ofs, upperdentry, attr);
-		revert_creds(old_cred);
+
 		if (!err)
 			ovl_copyattr(dentry->d_inode);
 		inode_unlock(upperdentry->d_inode);
@@ -160,7 +160,6 @@ int ovl_getattr(struct mnt_idmap *idmap, const struct path *path,
 	struct dentry *dentry = path->dentry;
 	enum ovl_path_type type;
 	struct path realpath;
-	const struct cred *old_cred;
 	struct inode *inode = d_inode(dentry);
 	bool is_dir = S_ISDIR(inode->i_mode);
 	int fsid = 0;
@@ -170,7 +169,7 @@ int ovl_getattr(struct mnt_idmap *idmap, const struct path *path,
 	metacopy_blocks = ovl_is_metacopy_dentry(dentry);
 
 	type = ovl_path_real(dentry, &realpath);
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	err = ovl_do_getattr(&realpath, stat, request_mask, flags);
 	if (err)
 		goto out;
@@ -281,8 +280,6 @@ int ovl_getattr(struct mnt_idmap *idmap, const struct path *path,
 		stat->nlink = dentry->d_inode->i_nlink;
 
 out:
-	revert_creds(old_cred);
-
 	return err;
 }
 
@@ -292,7 +289,6 @@ int ovl_permission(struct mnt_idmap *idmap,
 	struct inode *upperinode = ovl_inode_upper(inode);
 	struct inode *realinode;
 	struct path realpath;
-	const struct cred *old_cred;
 	int err;
 
 	/* Careful in RCU walk mode */
@@ -310,7 +306,8 @@ int ovl_permission(struct mnt_idmap *idmap,
 	if (err)
 		return err;
 
-	old_cred = ovl_override_creds(inode->i_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
+
 	if (!upperinode &&
 	    !special_file(realinode->i_mode) && mask & MAY_WRITE) {
 		mask &= ~(MAY_WRITE | MAY_APPEND);
@@ -318,7 +315,6 @@ int ovl_permission(struct mnt_idmap *idmap,
 		mask |= MAY_READ;
 	}
 	err = inode_permission(mnt_idmap(realpath.mnt), realinode, mask);
-	revert_creds(old_cred);
 
 	return err;
 }
@@ -327,15 +323,14 @@ static const char *ovl_get_link(struct dentry *dentry,
 				struct inode *inode,
 				struct delayed_call *done)
 {
-	const struct cred *old_cred;
 	const char *p;
 
 	if (!dentry)
 		return ERR_PTR(-ECHILD);
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
 	p = vfs_get_link(ovl_dentry_real(dentry), done);
-	revert_creds(old_cred);
+
 	return p;
 }
 
@@ -466,11 +461,8 @@ struct posix_acl *do_ovl_get_acl(struct mnt_idmap *idmap,
 
 		acl = get_cached_acl_rcu(realinode, type);
 	} else {
-		const struct cred *old_cred;
-
-		old_cred = ovl_override_creds(inode->i_sb);
+		guard(cred)(ovl_creds(inode->i_sb));
 		acl = ovl_get_acl_path(&realpath, posix_acl_xattr_name(type), noperm);
-		revert_creds(old_cred);
 	}
 
 	return acl;
@@ -482,7 +474,6 @@ static int ovl_set_or_remove_acl(struct dentry *dentry, struct inode *inode,
 	int err;
 	struct path realpath;
 	const char *acl_name;
-	const struct cred *old_cred;
 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);
 	struct dentry *upperdentry = ovl_dentry_upper(dentry);
 	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);
@@ -496,10 +487,10 @@ static int ovl_set_or_remove_acl(struct dentry *dentry, struct inode *inode,
 		struct posix_acl *real_acl;
 
 		ovl_path_lower(dentry, &realpath);
-		old_cred = ovl_override_creds(dentry->d_sb);
-		real_acl = vfs_get_acl(mnt_idmap(realpath.mnt), realdentry,
-				       acl_name);
-		revert_creds(old_cred);
+		scoped_guard(cred, ovl_creds(dentry->d_sb))
+			real_acl = vfs_get_acl(mnt_idmap(realpath.mnt), realdentry,
+					       acl_name);
+
 		if (IS_ERR(real_acl)) {
 			err = PTR_ERR(real_acl);
 			goto out;
@@ -519,12 +510,12 @@ static int ovl_set_or_remove_acl(struct dentry *dentry, struct inode *inode,
 	if (err)
 		goto out;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	if (acl)
-		err = ovl_do_set_acl(ofs, realdentry, acl_name, acl);
-	else
-		err = ovl_do_remove_acl(ofs, realdentry, acl_name);
-	revert_creds(old_cred);
+	scoped_guard(cred, ovl_creds(dentry->d_sb)) {
+		if (acl)
+			err = ovl_do_set_acl(ofs, realdentry, acl_name, acl);
+		else
+			err = ovl_do_remove_acl(ofs, realdentry, acl_name);
+	}
 	ovl_drop_write(dentry);
 
 	/* copy c/mtime */
@@ -591,7 +582,6 @@ static int ovl_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 {
 	int err;
 	struct inode *realinode = ovl_inode_realdata(inode);
-	const struct cred *old_cred;
 
 	if (!realinode)
 		return -EIO;
@@ -599,9 +589,8 @@ static int ovl_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	if (!realinode->i_op->fiemap)
 		return -EOPNOTSUPP;
 
-	old_cred = ovl_override_creds(inode->i_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
 	err = realinode->i_op->fiemap(realinode, fieinfo, start, len);
-	revert_creds(old_cred);
 
 	return err;
 }
@@ -649,7 +638,6 @@ int ovl_fileattr_set(struct mnt_idmap *idmap,
 {
 	struct inode *inode = d_inode(dentry);
 	struct path upperpath;
-	const struct cred *old_cred;
 	unsigned int flags;
 	int err;
 
@@ -661,7 +649,7 @@ int ovl_fileattr_set(struct mnt_idmap *idmap,
 		if (err)
 			goto out;
 
-		old_cred = ovl_override_creds(inode->i_sb);
+		guard(cred)(ovl_creds(inode->i_sb));
 		/*
 		 * Store immutable/append-only flags in xattr and clear them
 		 * in upper fileattr (in case they were set by older kernel)
@@ -672,7 +660,6 @@ int ovl_fileattr_set(struct mnt_idmap *idmap,
 		err = ovl_set_protattr(inode, upperpath.dentry, fa);
 		if (!err)
 			err = ovl_real_fileattr_set(&upperpath, fa);
-		revert_creds(old_cred);
 		ovl_drop_write(dentry);
 
 		/*
@@ -726,15 +713,13 @@ int ovl_fileattr_get(struct dentry *dentry, struct fileattr *fa)
 {
 	struct inode *inode = d_inode(dentry);
 	struct path realpath;
-	const struct cred *old_cred;
 	int err;
 
 	ovl_path_real(dentry, &realpath);
 
-	old_cred = ovl_override_creds(inode->i_sb);
+	guard(cred)(ovl_creds(inode->i_sb));
 	err = ovl_real_fileattr_get(&realpath, fa);
 	ovl_fileattr_prot_flags(inode, fa);
-	revert_creds(old_cred);
 
 	return err;
 }
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c
index 5764f91d283e..4b9137572cdc 100644
--- a/fs/overlayfs/namei.c
+++ b/fs/overlayfs/namei.c
@@ -953,15 +953,11 @@ static int ovl_maybe_validate_verity(struct dentry *dentry)
 		return err;
 
 	if (!ovl_test_flag(OVL_VERIFIED_DIGEST, inode)) {
-		const struct cred *old_cred;
-
-		old_cred = ovl_override_creds(dentry->d_sb);
+		guard(cred)(ovl_creds(dentry->d_sb));
 
 		err = ovl_validate_verity(ofs, &metapath, &datapath);
 		if (err == 0)
 			ovl_set_flag(OVL_VERIFIED_DIGEST, inode);
-
-		revert_creds(old_cred);
 	}
 
 	ovl_inode_unlock(inode);
@@ -975,7 +971,6 @@ static int ovl_maybe_lookup_lowerdata(struct dentry *dentry)
 	struct inode *inode = d_inode(dentry);
 	const char *redirect = ovl_lowerdata_redirect(inode);
 	struct ovl_path datapath = {};
-	const struct cred *old_cred;
 	int err;
 
 	if (!redirect || ovl_dentry_lowerdata(dentry))
@@ -993,9 +988,9 @@ static int ovl_maybe_lookup_lowerdata(struct dentry *dentry)
 	if (ovl_dentry_lowerdata(dentry))
 		goto out;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	err = ovl_lookup_data_layers(dentry, redirect, &datapath);
-	revert_creds(old_cred);
+
 	if (err)
 		goto out_err;
 
@@ -1030,7 +1025,6 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 			  unsigned int flags)
 {
 	struct ovl_entry *oe = NULL;
-	const struct cred *old_cred;
 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);
 	struct ovl_entry *poe = OVL_E(dentry->d_parent);
 	struct ovl_entry *roe = OVL_E(dentry->d_sb->s_root);
@@ -1061,7 +1055,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 	if (dentry->d_name.len > ofs->namelen)
 		return ERR_PTR(-ENAMETOOLONG);
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	upperdir = ovl_dentry_upper(dentry->d_parent);
 	if (upperdir) {
 		d.layer = &ofs->layers[0];
@@ -1342,7 +1336,6 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 
 	ovl_dentry_init_reval(dentry, upperdentry, OVL_I_E(inode));
 
-	revert_creds(old_cred);
 	if (origin_path) {
 		dput(origin_path->dentry);
 		kfree(origin_path);
@@ -1366,7 +1359,6 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 	kfree(upperredirect);
 out:
 	kfree(d.redirect);
-	revert_creds(old_cred);
 	return ERR_PTR(err);
 }
 
@@ -1374,7 +1366,6 @@ bool ovl_lower_positive(struct dentry *dentry)
 {
 	struct ovl_entry *poe = OVL_E(dentry->d_parent);
 	const struct qstr *name = &dentry->d_name;
-	const struct cred *old_cred;
 	unsigned int i;
 	bool positive = false;
 	bool done = false;
@@ -1390,7 +1381,7 @@ bool ovl_lower_positive(struct dentry *dentry)
 	if (!ovl_dentry_upper(dentry))
 		return true;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	/* Positive upper -> have to look up lower to see whether it exists */
 	for (i = 0; !done && !positive && i < ovl_numlower(poe); i++) {
 		struct dentry *this;
@@ -1423,7 +1414,6 @@ bool ovl_lower_positive(struct dentry *dentry)
 			dput(this);
 		}
 	}
-	revert_creds(old_cred);
 
 	return positive;
 }
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index 0ca8af060b0c..d17f8a5aae6f 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -273,9 +273,8 @@ static int ovl_check_whiteouts(const struct path *path, struct ovl_readdir_data
 	int err;
 	struct ovl_cache_entry *p;
 	struct dentry *dentry, *dir = path->dentry;
-	const struct cred *old_cred;
 
-	old_cred = ovl_override_creds(rdd->dentry->d_sb);
+	guard(cred)(ovl_creds(rdd->dentry->d_sb));
 
 	err = down_write_killable(&dir->d_inode->i_rwsem);
 	if (!err) {
@@ -290,7 +289,6 @@ static int ovl_check_whiteouts(const struct path *path, struct ovl_readdir_data
 		}
 		inode_unlock(dir->d_inode);
 	}
-	revert_creds(old_cred);
 
 	return err;
 }
@@ -753,10 +751,9 @@ static int ovl_iterate(struct file *file, struct dir_context *ctx)
 	struct dentry *dentry = file->f_path.dentry;
 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);
 	struct ovl_cache_entry *p;
-	const struct cred *old_cred;
 	int err;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	if (!ctx->pos)
 		ovl_dir_reset(file);
 
@@ -808,7 +805,6 @@ static int ovl_iterate(struct file *file, struct dir_context *ctx)
 	}
 	err = 0;
 out:
-	revert_creds(old_cred);
 	return err;
 }
 
@@ -856,11 +852,9 @@ static struct file *ovl_dir_open_realfile(const struct file *file,
 					  const struct path *realpath)
 {
 	struct file *res;
-	const struct cred *old_cred;
 
-	old_cred = ovl_override_creds(file_inode(file)->i_sb);
+	guard(cred)(ovl_creds(file_inode(file)->i_sb));
 	res = ovl_path_open(realpath, O_RDONLY | (file->f_flags & O_LARGEFILE));
-	revert_creds(old_cred);
 
 	return res;
 }
@@ -983,11 +977,9 @@ int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list)
 	int err;
 	struct ovl_cache_entry *p, *n;
 	struct rb_root root = RB_ROOT;
-	const struct cred *old_cred;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	err = ovl_dir_read_merged(dentry, list, &root);
-	revert_creds(old_cred);
 	if (err)
 		return err;
 
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index a8e17f14d7a2..6b861e24997d 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -1129,7 +1129,6 @@ static void ovl_cleanup_index(struct dentry *dentry)
 int ovl_nlink_start(struct dentry *dentry)
 {
 	struct inode *inode = d_inode(dentry);
-	const struct cred *old_cred;
 	int err;
 
 	if (WARN_ON(!inode))
@@ -1166,7 +1165,7 @@ int ovl_nlink_start(struct dentry *dentry)
 	if (d_is_dir(dentry) || !ovl_test_flag(OVL_INDEX, inode))
 		return 0;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	/*
 	 * The overlay inode nlink should be incremented/decremented IFF the
 	 * upper operation succeeds, along with nlink change of upper inode.
@@ -1174,7 +1173,7 @@ int ovl_nlink_start(struct dentry *dentry)
 	 * value relative to the upper inode nlink in an upper inode xattr.
 	 */
 	err = ovl_set_nlink_upper(dentry);
-	revert_creds(old_cred);
+
 	if (err)
 		goto out_drop_write;
 
@@ -1195,11 +1194,8 @@ void ovl_nlink_end(struct dentry *dentry)
 	ovl_drop_write(dentry);
 
 	if (ovl_test_flag(OVL_INDEX, inode) && inode->i_nlink == 0) {
-		const struct cred *old_cred;
-
-		old_cred = ovl_override_creds(dentry->d_sb);
+		guard(cred)(ovl_creds(dentry->d_sb));
 		ovl_cleanup_index(dentry);
-		revert_creds(old_cred);
 	}
 
 	ovl_inode_unlock(inode);
diff --git a/fs/overlayfs/xattrs.c b/fs/overlayfs/xattrs.c
index 383978e4663c..cc4ab2d81162 100644
--- a/fs/overlayfs/xattrs.c
+++ b/fs/overlayfs/xattrs.c
@@ -41,13 +41,11 @@ static int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char
 	struct dentry *upperdentry = ovl_i_dentry_upper(inode);
 	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);
 	struct path realpath;
-	const struct cred *old_cred;
 
 	if (!value && !upperdentry) {
 		ovl_path_lower(dentry, &realpath);
-		old_cred = ovl_override_creds(dentry->d_sb);
-		err = vfs_getxattr(mnt_idmap(realpath.mnt), realdentry, name, NULL, 0);
-		revert_creds(old_cred);
+		scoped_guard(cred, ovl_creds(dentry->d_sb))
+			err = vfs_getxattr(mnt_idmap(realpath.mnt), realdentry, name, NULL, 0);
 		if (err < 0)
 			goto out;
 	}
@@ -64,15 +62,15 @@ static int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char
 	if (err)
 		goto out;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	if (value) {
-		err = ovl_do_setxattr(ofs, realdentry, name, value, size,
-				      flags);
-	} else {
-		WARN_ON(flags != XATTR_REPLACE);
-		err = ovl_do_removexattr(ofs, realdentry, name);
+	scoped_guard(cred, ovl_creds(dentry->d_sb)) {
+		if (value) {
+			err = ovl_do_setxattr(ofs, realdentry, name, value, size,
+					      flags);
+		} else {
+			WARN_ON(flags != XATTR_REPLACE);
+			err = ovl_do_removexattr(ofs, realdentry, name);
+		}
 	}
-	revert_creds(old_cred);
 	ovl_drop_write(dentry);
 
 	/* copy c/mtime */
@@ -85,13 +83,11 @@ static int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char
 			 void *value, size_t size)
 {
 	ssize_t res;
-	const struct cred *old_cred;
 	struct path realpath;
 
 	ovl_i_path_real(inode, &realpath);
-	old_cred = ovl_override_creds(dentry->d_sb);
+	guard(cred)(ovl_creds(dentry->d_sb));
 	res = vfs_getxattr(mnt_idmap(realpath.mnt), realpath.dentry, name, value, size);
-	revert_creds(old_cred);
 	return res;
 }
 
@@ -116,12 +112,10 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
 	ssize_t res;
 	size_t len;
 	char *s;
-	const struct cred *old_cred;
 	size_t prefix_len, name_len;
 
-	old_cred = ovl_override_creds(dentry->d_sb);
-	res = vfs_listxattr(realdentry, list, size);
-	revert_creds(old_cred);
+	scoped_guard(cred, ovl_creds(dentry->d_sb))
+		res = vfs_listxattr(realdentry, list, size);
 	if (res <= 0 || size == 0)
 		return res;
 
@@ -268,4 +262,3 @@ const struct xattr_handler * const *ovl_xattr_handlers(struct ovl_fs *ofs)
 	return ofs->config.userxattr ? ovl_user_xattr_handlers :
 		ovl_trusted_xattr_handlers;
 }
-
