ceph: fix posix ACL hooks

The merge of commit 7221fe4c2ed7 ("ceph: add acl for cephfs") raced with
upstream changes in the generic POSIX ACL code (eg commit 2aeccbe957d0
"fs: add generic xattr_acl handlers" and others).

Some of the fallout was fixed in commit 4db658ea0ca ("ceph: Fix up after
semantic merge conflict"), but it was incomplete: the set_acl
inode_operation wasn't getting set, and the prototype needed to be
adjusted a bit (it doesn't take a dentry anymore).

Signed-off-by: Sage Weil <sage@inktank.com>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 619616d..6da4df8 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1303,6 +1303,7 @@
 	.listxattr = ceph_listxattr,
 	.removexattr = ceph_removexattr,
 	.get_acl = ceph_get_acl,
+	.set_acl = ceph_set_acl,
 	.mknod = ceph_mknod,
 	.symlink = ceph_symlink,
 	.mkdir = ceph_mkdir,