nfs_writepage_locked() is only called from nfs_wb_folio() (since Commit
12fc0a963128 ("nfs: Remove writepage")) so ->sync_mode is always
WB_SYNC_ALL.
This means the test for WB_SYNC_NONE is dead code and can be removed.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
        struct inode *inode = folio_file_mapping(folio)->host;
        int err;
 
-       if (wbc->sync_mode == WB_SYNC_NONE &&
-           NFS_SERVER(inode)->write_congested)
-               return AOP_WRITEPAGE_ACTIVATE;
-
        nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE);
        nfs_pageio_init_write(&pgio, inode, 0, false,
                              &nfs_async_write_completion_ops);