commit e885de1a5bc9f46ef8f934c5a7602c89d2d51e8d
author Trond Myklebust <Trond.Myklebust@netapp.com> Fri Jun 10 13:30:23 2011 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> Tue Jul 12 13:40:28 2011 -0400
tree fec97da658ce241c055f5fc8bb7e2e84ee1cc259
parent d8007d4dd6ff8749cc8a4063c3ec87442db76d82

NFSv4.1: Fall back to ordinary i/o through the mds if we have no layout segment

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/pnfs.c

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 69a0c3f..cc807fe 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1066,6 +1066,10 @@
 					   req->wb_bytes,
 					   IOMODE_READ,
 					   GFP_KERNEL);
+	/* If no lseg, fall back to read through mds */
+	if (pgio->pg_lseg == NULL)
+		nfs_pageio_init_read_mds(pgio, pgio->pg_inode);
+
 }
 EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_read);
 
@@ -1080,6 +1084,9 @@
 					   req->wb_bytes,
 					   IOMODE_RW,
 					   GFP_NOFS);
+	/* If no lseg, fall back to write through mds */
+	if (pgio->pg_lseg == NULL)
+		nfs_pageio_init_write_mds(pgio, pgio->pg_inode, pgio->pg_ioflags);
 }
 EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_write);