233 static int ovl_set_opaque_xerr(struct dentry *dentry, struct dentry *upper,  in ovl_set_opaque_xerr()  argument
239 	err = ovl_check_setxattr(ofs, upper, OVL_XATTR_OPAQUE, "y", 1, xerr);  in ovl_set_opaque_xerr()
249 	 * Fail with -EIO when trying to create opaque dir and upper doesn't  in ovl_set_opaque()
257  * Common operations required to be done after creation of file on upper.
304 	/* Force lookup of new upper hardlink to find its lower */  in ovl_instantiate()
370 	struct dentry *upper;  in ovl_clear_empty()  local
391 	upper = upperpath.dentry;  in ovl_clear_empty()
392 	if (upper->d_parent->d_inode != udir)  in ovl_clear_empty()
400 	err = ovl_copy_xattr(dentry->d_sb, upper, opaquedir);  in ovl_clear_empty()
414 	err = ovl_do_rename(wdir, opaquedir, udir, upper, RENAME_EXCHANGE);  in ovl_clear_empty()
418 	ovl_cleanup_whiteouts(upper, list);  in ovl_clear_empty()
419 	ovl_cleanup(wdir, upper);  in ovl_clear_empty()
422 	/* dentry's upper doesn't match now, get rid of it */  in ovl_clear_empty()
468 	struct dentry *upper;  in ovl_create_over_whiteout()  local
488 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_create_over_whiteout()
490 	err = PTR_ERR(upper);  in ovl_create_over_whiteout()
491 	if (IS_ERR(upper))  in ovl_create_over_whiteout()
495 	if (d_is_negative(upper) || !IS_WHITEOUT(d_inode(upper)))  in ovl_create_over_whiteout()
536 		err = ovl_do_rename(wdir, newdentry, udir, upper,  in ovl_create_over_whiteout()
541 		ovl_cleanup(wdir, upper);  in ovl_create_over_whiteout()
543 		err = ovl_do_rename(wdir, newdentry, udir, upper, 0);  in ovl_create_over_whiteout()
553 	dput(upper);  in ovl_create_over_whiteout()
742 static bool ovl_matches_upper(struct dentry *dentry, struct dentry *upper)  in ovl_matches_upper()  argument
744 	return d_inode(ovl_dentry_upper(dentry)) == d_inode(upper);  in ovl_matches_upper()
753 	struct dentry *upper;  in ovl_remove_and_whiteout()  local
771 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_and_whiteout()
773 	err = PTR_ERR(upper);  in ovl_remove_and_whiteout()
774 	if (IS_ERR(upper))  in ovl_remove_and_whiteout()
778 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_and_whiteout()
780 	     !ovl_matches_upper(dentry, upper))) {  in ovl_remove_and_whiteout()
784 	err = ovl_cleanup_and_whiteout(ofs, d_inode(upperdir), upper);  in ovl_remove_and_whiteout()
792 	dput(upper);  in ovl_remove_and_whiteout()
806 	struct dentry *upper;  in ovl_remove_upper()  local
818 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_upper()
820 	err = PTR_ERR(upper);  in ovl_remove_upper()
821 	if (IS_ERR(upper))  in ovl_remove_upper()
825 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_upper()
826 	    (!opaquedir && !ovl_matches_upper(dentry, upper)))  in ovl_remove_upper()
830 		err = vfs_rmdir(&init_user_ns, dir, upper);  in ovl_remove_upper()
832 		err = vfs_unlink(&init_user_ns, dir, upper, NULL);  in ovl_remove_upper()
844 	dput(upper);  in ovl_remove_upper()
888 	/* No need to clean pure upper removed by vfs_rmdir() */  in ovl_do_remove()
1033 	 * in general as two upper hardlinks could be in different  in ovl_need_absolute_redirect()
1176 		 * When ovl_iterate() iterates an "impure" upper dir, it will  in ovl_rename()