flexfiles: enforce per-mirror stateid only for v4 DSes

Since commit bb21ce0ad227 we always enforce per-mirror stateid.
However, this makes sense only for v4+ servers.

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 74b36ed..310d750 100644 (file)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1733,7 +1733,8 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
        if (fh)
                hdr->args.fh = fh;
 
-       if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
+       if (vers == 4 &&
+               !nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
                goto out_failed;
 
        /*
@@ -1798,7 +1799,8 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
        if (fh)
                hdr->args.fh = fh;
 
-       if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
+       if (vers == 4 &&
+               !nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
                goto out_failed;
 
        /*