NFSv4.1: implement generic pnfs layer write switch

Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Mike Sager <sager@netapp.com>
Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 0040a5ee6208..9d21bfeec88f 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -238,6 +238,12 @@ filelayout_read_pagelist(struct nfs_read_data *data)
         return PNFS_ATTEMPTED;
 }
 
+static enum pnfs_try_status
+filelayout_write_pagelist(struct nfs_write_data *data, int sync)
+{
+        return PNFS_NOT_ATTEMPTED;
+}
+
 /*
  * filelayout_check_layout()
  *
@@ -455,6 +461,7 @@ static struct pnfs_layoutdriver_type filelayout_type = {
         .free_lseg              = filelayout_free_lseg,
         .pg_test                = filelayout_pg_test,
         .read_pagelist          = filelayout_read_pagelist,
+        .write_pagelist         = filelayout_write_pagelist,
 };
 
 static int __init nfs4filelayout_init(void)