nfs: fix panic when nfs4_ff_layout_prepare_ds() fails

[sfrench/cifs-2.6.git] / fs / nfs / flexfilelayout / flexfilelayout.c

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index ef817a0475ffa6508a0d663b3fa4f7f29ebd58af..3e724cb7ef01d87f3d49c57ab83ca81fd781c4f9 100644 (file)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -2016,7 +2016,7 @@ static void ff_layout_cancel_io(struct pnfs_layout_segment *lseg)
        for (idx = 0; idx < flseg->mirror_array_cnt; idx++) {
                mirror = flseg->mirror_array[idx];
                mirror_ds = mirror->mirror_ds;
-               if (!mirror_ds)
+               if (IS_ERR_OR_NULL(mirror_ds))
                        continue;
                ds = mirror->mirror_ds->ds;
                if (!ds)