232 static int ovl_set_opaque_xerr(struct dentry *dentry, struct dentry *upper,  in ovl_set_opaque_xerr()  argument
237 	err = ovl_check_setxattr(dentry, upper, OVL_XATTR_OPAQUE, "y", 1, xerr);  in ovl_set_opaque_xerr()
247 	 * Fail with -EIO when trying to create opaque dir and upper doesn't  in ovl_set_opaque()
255  * Common operations required to be done after creation of file on upper.
302 	/* Force lookup of new upper hardlink to find its lower */  in ovl_instantiate()
366 	struct dentry *upper;  in ovl_clear_empty()  local
387 	upper = upperpath.dentry;  in ovl_clear_empty()
388 	if (upper->d_parent->d_inode != udir)  in ovl_clear_empty()
396 	err = ovl_copy_xattr(dentry->d_sb, upper, opaquedir);  in ovl_clear_empty()
410 	err = ovl_do_rename(wdir, opaquedir, udir, upper, RENAME_EXCHANGE);  in ovl_clear_empty()
414 	ovl_cleanup_whiteouts(upper, list);  in ovl_clear_empty()
415 	ovl_cleanup(wdir, upper);  in ovl_clear_empty()
418 	/* dentry's upper doesn't match now, get rid of it */  in ovl_clear_empty()
464 	struct dentry *upper;  in ovl_create_over_whiteout()  local
484 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_create_over_whiteout()
486 	err = PTR_ERR(upper);  in ovl_create_over_whiteout()
487 	if (IS_ERR(upper))  in ovl_create_over_whiteout()
491 	if (d_is_negative(upper) || !IS_WHITEOUT(d_inode(upper)))  in ovl_create_over_whiteout()
532 		err = ovl_do_rename(wdir, newdentry, udir, upper,  in ovl_create_over_whiteout()
537 		ovl_cleanup(wdir, upper);  in ovl_create_over_whiteout()
539 		err = ovl_do_rename(wdir, newdentry, udir, upper, 0);  in ovl_create_over_whiteout()
549 	dput(upper);  in ovl_create_over_whiteout()
737 static bool ovl_matches_upper(struct dentry *dentry, struct dentry *upper)  in ovl_matches_upper()  argument
739 	return d_inode(ovl_dentry_upper(dentry)) == d_inode(upper);  in ovl_matches_upper()
748 	struct dentry *upper;  in ovl_remove_and_whiteout()  local
766 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_and_whiteout()
768 	err = PTR_ERR(upper);  in ovl_remove_and_whiteout()
769 	if (IS_ERR(upper))  in ovl_remove_and_whiteout()
773 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_and_whiteout()
775 	     !ovl_matches_upper(dentry, upper))) {  in ovl_remove_and_whiteout()
779 	err = ovl_cleanup_and_whiteout(ofs, d_inode(upperdir), upper);  in ovl_remove_and_whiteout()
787 	dput(upper);  in ovl_remove_and_whiteout()
801 	struct dentry *upper;  in ovl_remove_upper()  local
813 	upper = lookup_one_len(dentry->d_name.name, upperdir,  in ovl_remove_upper()
815 	err = PTR_ERR(upper);  in ovl_remove_upper()
816 	if (IS_ERR(upper))  in ovl_remove_upper()
820 	if ((opaquedir && upper != opaquedir) ||  in ovl_remove_upper()
821 	    (!opaquedir && !ovl_matches_upper(dentry, upper)))  in ovl_remove_upper()
825 		err = vfs_rmdir(dir, upper);  in ovl_remove_upper()
827 		err = vfs_unlink(dir, upper, NULL);  in ovl_remove_upper()
839 	dput(upper);  in ovl_remove_upper()
883 	/* No need to clean pure upper removed by vfs_rmdir() */  in ovl_do_remove()
1028 	 * in general as two upper hardlinks could be in different  in ovl_need_absolute_redirect()
1170 		 * When ovl_iterate() iterates an "impure" upper dir, it will  in ovl_rename()