pNFS/flexfiles: The mirror count could depend on the layout segment range

Make sure we specify the layout segment range when calculating the
mirror count. In theory, that number could depend on the range to
which we're writing.

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

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index b3ec12e5fde1da27ac0cf9926e4d3b2c4293b9ed..b26173d7273587351f7d2267c66504378c619c85 100644 (file)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -947,8 +947,8 @@ ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio,
        if (!pgio->pg_lseg) {
                pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
                                                   nfs_req_openctx(req),
-                                                  0,
-                                                  NFS4_MAX_UINT64,
+                                                  req_offset(req),
+                                                  req->wb_bytes,
                                                   IOMODE_RW,
                                                   false,
                                                   GFP_NOFS);