ovl: allow statfs if no upper layer

Handle "no upper layer" case in statfs.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2014-12-13 00:59:46 +01:00
parent 09e10322b7
commit 4ebc581828

View file

@ -484,7 +484,7 @@ static void ovl_put_super(struct super_block *sb)
* @buf: The struct kstatfs to fill in with stats * @buf: The struct kstatfs to fill in with stats
* *
* Get the filesystem statistics. As writes always target the upper layer * Get the filesystem statistics. As writes always target the upper layer
* filesystem pass the statfs to the same filesystem. * filesystem pass the statfs to the upper filesystem (if it exists)
*/ */
static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf) static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf)
{ {
@ -493,7 +493,7 @@ static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf)
struct path path; struct path path;
int err; int err;
ovl_path_upper(root_dentry, &path); ovl_path_real(root_dentry, &path);
err = vfs_statfs(&path, buf); err = vfs_statfs(&path, buf);
if (!err) { if (!err) {