Commit 2941bf53 authored by Xiubo Li's avatar Xiubo Li Committed by Ilya Dryomov
Browse files

ceph: zero the dir_entries memory when allocating it 



This potentially will cause a bug in future if using an old ceph
version that sends a smaller inode struct, which can cause some members
to be skipped in handle_reply.

Signed-off-by: default avatarXiubo Li <xiubli@redhat.com>
Reviewed-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent ab58a5a1

fs/ceph/mds_client.c

+2 −1
Original line number Diff line number Diff line
@@ -2202,7 +2202,8 @@ int ceph_alloc_readdir_reply_buffer(struct ceph_mds_request *req, 
	order = get_order(size * num_entries);

	while (order >= 0) {

		rinfo->dir_entries = (void*)__get_free_pages(GFP_KERNEL |

							     __GFP_NOWARN,

							     __GFP_NOWARN |

							     __GFP_ZERO,

							     order);

		if (rinfo->dir_entries)

			break;