4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Miklos Szeredi <mszer...@redhat.com>
commit e1ff3dd1ae52cef5b5373c8cc4ad949c2c25a71c upstream.
Workdir creation fails in latest kernel.
Fix by allowing EOPNOTSUPP as a valid return value from
vfs_removexattr(XATTR_NAME_POSIX_ACL_*). Upper filesystem may not support
ACL and still be perfectly able to support overlayfs.
Reported-by: Martin Ziegler <zieg...@uni-freiburg.de>
Signed-off-by: Miklos Szeredi <mszer...@redhat.com>
Fixes: c11b9fdd6a61 ("ovl: remove posix_acl_default from workdir")
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
fs/overlayfs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -784,11 +784,11 @@ retry:
goto out_dput;
err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT);
- if (err && err != -ENODATA)
+ if (err && err != -ENODATA && err != -EOPNOTSUPP)
goto out_dput;
err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS);
- if (err && err != -ENODATA)
+ if (err && err != -ENODATA && err != -EOPNOTSUPP)
goto out_dput;
/* Clear any inherited mode bits */
