tree 487e9206cc31f1a214ee43771325193abb4a2b89
parent 8d96b10639fb402357b75b055b1e82a65ff95050
author Yanchuan Nian <ycnian@gmail.com> 1351670748 +0800
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1351715185 -0400

nfs: Check whether a layout pointer is NULL before free it

The new layout pointer in pnfs_find_alloc_layout() may be NULL because of
out of memory. we must do some check work, otherwise pnfs_free_layout_hdr()
will go wrong because it can not deal with a NULL pointer.

Signed-off-by: Yanchuan Nian <ycnian@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>