nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading...

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 40bccb2..a7aeb74 100644 (file)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -830,7 +830,8 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
        int ds_idx;
 
        /* Use full layout for now */
-       if (!pgio->pg_lseg) {
+       if (!pgio->pg_lseg || ff_layout_avoid_read_on_rw(pgio->pg_lseg)) {
+               pnfs_put_lseg(pgio->pg_lseg);
                pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
                                                   req->wb_context,
                                                   0,
@@ -840,9 +841,9 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
                if (IS_ERR(pgio->pg_lseg)) {
                        pgio->pg_error = PTR_ERR(pgio->pg_lseg);
                        pgio->pg_lseg = NULL;
-                       return;
                }
        }
+
        /* If no lseg, fall back to read through mds */
        if (pgio->pg_lseg == NULL)
                goto out_mds;