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 b3ec12e..b26173d 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);