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>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 74b36ed883ca..310d7500f665 100644
--- 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;
 
         /*