--- /dev/null
+From 485e71e8fb6356c08c7fc6bcce4bf02c9a9a663f Mon Sep 17 00:00:00 2001
+From: Andreas Gruenbacher <agruenba@redhat.com>
+Date: Wed, 22 Jun 2016 23:57:25 +0200
+Subject: posix_acl: Add set_posix_acl
+
+From: Andreas Gruenbacher <agruenba@redhat.com>
+
+commit 485e71e8fb6356c08c7fc6bcce4bf02c9a9a663f upstream.
+
+Factor out part of posix_acl_xattr_set into a common function that takes
+a posix_acl, which nfsd can also call.
+
+The prototype already exists in include/linux/posix_acl.h.
+
+Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
+Cc: Christoph Hellwig <hch@infradead.org>
+Cc: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: J. Bruce Fields <bfields@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/posix_acl.c | 41 +++++++++++++++++++++++------------------
+ 1 file changed, 23 insertions(+), 18 deletions(-)
+
+--- a/fs/posix_acl.c
++++ b/fs/posix_acl.c
+@@ -788,6 +788,28 @@ posix_acl_xattr_get(const struct xattr_h
+ return error;
+ }
+
++int
++set_posix_acl(struct inode *inode, int type, struct posix_acl *acl)
++{
++ if (!IS_POSIXACL(inode))
++ return -EOPNOTSUPP;
++ if (!inode->i_op->set_acl)
++ return -EOPNOTSUPP;
++
++ if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
++ return acl ? -EACCES : 0;
++ if (!inode_owner_or_capable(inode))
++ return -EPERM;
++
++ if (acl) {
++ int ret = posix_acl_valid(acl);
++ if (ret)
++ return ret;
++ }
++ return inode->i_op->set_acl(inode, acl, type);
++}
++EXPORT_SYMBOL(set_posix_acl);
++
+ static int
+ posix_acl_xattr_set(const struct xattr_handler *handler,
+ struct dentry *dentry, const char *name,
+@@ -799,30 +821,13 @@ posix_acl_xattr_set(const struct xattr_h
+
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+- if (!IS_POSIXACL(inode))
+- return -EOPNOTSUPP;
+- if (!inode->i_op->set_acl)
+- return -EOPNOTSUPP;
+-
+- if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
+- return value ? -EACCES : 0;
+- if (!inode_owner_or_capable(inode))
+- return -EPERM;
+
+ if (value) {
+ acl = posix_acl_from_xattr(&init_user_ns, value, size);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+-
+- if (acl) {
+- ret = posix_acl_valid(acl);
+- if (ret)
+- goto out;
+- }
+ }
+-
+- ret = inode->i_op->set_acl(inode, acl, handler->flags);
+-out:
++ ret = set_posix_acl(inode, handler->flags, acl);
+ posix_acl_release(acl);
+ return ret;
+ }