static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry)
{
int err;
struct dentry *ret = NULL;
LIST_HEAD(list);
err = ovl_check_empty_dir(dentry, &list);
if (err)
ret = ERR_PTR(err);
else {
/*
* If no upperdentry then skip clearing whiteouts.
*
* Can race with copy-up, since we don't hold the upperdir
* mutex. Doesn't matter, since copy-up can't create a
* non-empty directory from an empty one.
*/
if (ovl_dentry_upper(dentry))
ret = ovl_clear_empty(dentry, &list);
}
ovl_cache_free(&list);
return ret;
}
static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry)
{
int err;
struct dentry *ret = NULL;
enum ovl_path_type type = ovl_path_type(dentry);
LIST_HEAD(list);
err = ovl_check_empty_dir(dentry, &list);
if (err) {
ret = ERR_PTR(err);
goto out_free;
}
/*
* When removing an empty opaque directory, then it makes no sense to
* replace it with an exact replica of itself.
*
* If no upperdentry then skip clearing whiteouts.
*
* Can race with copy-up, since we don't hold the upperdir mutex.
* Doesn't matter, since copy-up can't create a non-empty directory
* from an empty one.
*/
if (OVL_TYPE_UPPER(type) && OVL_TYPE_MERGE(type))
ret = ovl_clear_empty(dentry, &list);
out_free:
ovl_cache_free(&list);
return ret;
}
static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry,
enum ovl_path_type type)
{
int err;
struct dentry *ret = NULL;
LIST_HEAD(list);
err = ovl_check_empty_dir(dentry, &list);
if (err)
ret = ERR_PTR(err);
else if (type == OVL_PATH_MERGE)
ret = ovl_clear_empty(dentry, &list);
ovl_cache_free(&list);
return ret;
}