pNFS: LAYOUTRETURN should only update the stateid if the layout is valid

If the layout was completely returned, then ignore the returned layout
stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ff416d0..dc50ba4 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -8130,7 +8130,7 @@ static void nfs4_layoutreturn_release(void *calldata)
        pnfs_mark_matching_lsegs_invalid(lo, &freeme, &lrp->args.range,
                        be32_to_cpu(lrp->args.stateid.seqid));
        pnfs_mark_layout_returned_if_empty(lo);
-       if (lrp->res.lrs_present)
+       if (lrp->res.lrs_present && pnfs_layout_is_valid(lo))
                pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
        pnfs_clear_layoutreturn_waitbit(lo);
        spin_unlock(&lo->plh_inode->i_lock);

diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index b21bd0b..2f4f269 100644 (file)
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -375,6 +375,11 @@ static inline bool nfs_have_layout(struct inode *inode)
        return NFS_I(inode)->layout != NULL;
 }
 
+static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo)
+{
+       return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0;
+}
+
 static inline struct nfs4_deviceid_node *
 nfs4_get_deviceid(struct nfs4_deviceid_node *d)
 {