212 static int ovl_set_opaque_xerr(struct dentry *dentry, struct dentry *upper,  in ovl_set_opaque_xerr()  argument
217 	err = ovl_check_setxattr(dentry, upper, OVL_XATTR_OPAQUE, "y", 1, xerr);  in ovl_set_opaque_xerr()
227 	 * Fail with -EIO when trying to create opaque dir and upper doesn't  in ovl_set_opaque()
235  * Common operations required to be done after creation of file on upper.
277 	/* Force lookup of new upper hardlink to find its lower */  in ovl_instantiate()
341 	struct dentry *upper;  in ovl_clear_empty()  local
362 	upper = upperpath.dentry;  in ovl_clear_empty()
363 	if (upper->d_parent->d_inode != udir)  in ovl_clear_empty()
371 	err = ovl_copy_xattr(upper, opaquedir);  in ovl_clear_empty()
385 	err = ovl_do_rename(wdir, opaquedir, udir, upper, RENAME_EXCHANGE);  in ovl_clear_empty()
389 	ovl_cleanup_whiteouts(upper, list);  in ovl_clear_empty()
390 	ovl_cleanup(wdir, upper);  in ovl_clear_empty()
393 	/* dentry's upper doesn't match now, get rid of it */  in ovl_clear_empty()
440 	struct dentry *upper;  in ovl_create_over_whiteout()  local
460 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_create_over_whiteout()
462 	err = PTR_ERR(upper);  in ovl_create_over_whiteout()
463 	if (IS_ERR(upper))  in ovl_create_over_whiteout()
467 	if (d_is_negative(upper) || !IS_WHITEOUT(d_inode(upper)))  in ovl_create_over_whiteout()
508 		err = ovl_do_rename(wdir, newdentry, udir, upper,  in ovl_create_over_whiteout()
513 		ovl_cleanup(wdir, upper);  in ovl_create_over_whiteout()
515 		err = ovl_do_rename(wdir, newdentry, udir, upper, 0);  in ovl_create_over_whiteout()
523 	dput(upper);  in ovl_create_over_whiteout()
712 static bool ovl_matches_upper(struct dentry *dentry, struct dentry *upper)  in ovl_matches_upper()  argument
714 	return d_inode(ovl_dentry_upper(dentry)) == d_inode(upper);  in ovl_matches_upper()
722 	struct dentry *upper;  in ovl_remove_and_whiteout()  local
740 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_and_whiteout()
742 	err = PTR_ERR(upper);  in ovl_remove_and_whiteout()
743 	if (IS_ERR(upper))  in ovl_remove_and_whiteout()
747 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_and_whiteout()
749 	     !ovl_matches_upper(dentry, upper))) {  in ovl_remove_and_whiteout()
753 	err = ovl_cleanup_and_whiteout(workdir, d_inode(upperdir), upper);  in ovl_remove_and_whiteout()
761 	dput(upper);  in ovl_remove_and_whiteout()
775 	struct dentry *upper;  in ovl_remove_upper()  local
787 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_upper()
789 	err = PTR_ERR(upper);  in ovl_remove_upper()
790 	if (IS_ERR(upper))  in ovl_remove_upper()
794 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_upper()
795 	    (!opaquedir && !ovl_matches_upper(dentry, upper)))  in ovl_remove_upper()
799 		err = vfs_rmdir(dir, upper);  in ovl_remove_upper()
801 		err = vfs_unlink(dir, upper, NULL);  in ovl_remove_upper()
813 	dput(upper);  in ovl_remove_upper()
836 	/* No need to clean pure upper removed by vfs_rmdir() */  in ovl_do_remove()
981 	 * in general as two upper hardlinks could be in different  in ovl_need_absolute_redirect()
1121 		 * When ovl_iterate() iterates an "impure" upper dir, it will  in ovl_rename()