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authorFred Isaman <iisaman@netapp.com>2011-03-03 15:13:47 +0000
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-03-11 15:38:44 -0500
commita69aef1496726ed88386dad65abfcc8cd3195304 (patch)
tree66766c9eed54e6dc7ddf9ecaf8765a7bc833685e /fs/nfs/nfs4proc.c
parent7ffd10640dc008f6d5a375bd6450755745c63c7d (diff)
downloadop-kernel-dev-a69aef1496726ed88386dad65abfcc8cd3195304.zip
op-kernel-dev-a69aef1496726ed88386dad65abfcc8cd3195304.tar.gz
NFSv4.1: pnfs filelayout driver write
Allows the pnfs filelayout driver to write to the data servers. Note that COMMIT to data servers will be implemented in a future patch. To avoid improper behavior, for the moment any WRITE to a data server that would also require a COMMIT to the data server is sent NFS_FILE_SYNC. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> 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>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r--fs/nfs/nfs4proc.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index da90212..7b4b9f3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3145,6 +3145,23 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
return data->write_done_cb(task, data);
}
+/* Reset the the nfs_write_data to send the write to the MDS. */
+void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data)
+{
+ dprintk("%s Reset task for i/o through\n", __func__);
+ put_lseg(data->lseg);
+ data->lseg = NULL;
+ data->ds_clp = NULL;
+ data->write_done_cb = nfs4_write_done_cb;
+ data->args.fh = NFS_FH(data->inode);
+ data->args.bitmask = data->res.server->cache_consistency_bitmask;
+ data->args.offset = data->mds_offset;
+ data->res.fattr = &data->fattr;
+ task->tk_ops = data->mds_ops;
+ rpc_task_reset_client(task, NFS_CLIENT(data->inode));
+}
+EXPORT_SYMBOL_GPL(nfs4_reset_write);
+
static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct nfs_server *server = NFS_SERVER(data->inode);
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