From: Peng Tao <tao.peng@primarydata.com>
Date: Fri, 5 Sep 2014 16:53:21 +0000 (+0800)
Subject: nfs41: pass iomode through layoutreturn args
X-Git-Tag: firefly_0821_release~176^2~2246^2~38^2~30
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4579d6b897ee1b2557517fd536fb17eeb13481ad;p=firefly-linux-kernel-4.4.55.git

nfs41: pass iomode through layoutreturn args

So that it is possible to return a specific iomode layouts.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
---

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 7d8d7a47f771..3c3ff633dd17 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2012,7 +2012,7 @@ encode_layoutreturn(struct xdr_stream *xdr,
 	p = reserve_space(xdr, 16);
 	*p++ = cpu_to_be32(0);		/* reclaim. always 0 for now */
 	*p++ = cpu_to_be32(args->layout_type);
-	*p++ = cpu_to_be32(IOMODE_ANY);
+	*p++ = cpu_to_be32(args->iomode);
 	*p = cpu_to_be32(RETURN_FILE);
 	p = reserve_space(xdr, 16);
 	p = xdr_encode_hyper(p, 0);
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 7e1bac189d1c..1b544c1a746c 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -914,6 +914,7 @@ _pnfs_return_layout(struct inode *ino)
 	lrp->args.stateid = stateid;
 	lrp->args.layout_type = NFS_SERVER(ino)->pnfs_curr_ld->id;
 	lrp->args.inode = ino;
+	lrp->args.iomode = IOMODE_ANY;
 	lrp->args.layout = lo;
 	lrp->clp = NFS_SERVER(ino)->nfs_client;
 	lrp->cred = lo->plh_lc_cred;
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 962f461c065d..4fd7793d45d1 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -293,6 +293,7 @@ struct nfs4_layoutreturn_args {
 	struct nfs4_sequence_args seq_args;
 	struct pnfs_layout_hdr *layout;
 	struct inode *inode;
+	enum pnfs_iomode iomode;
 	nfs4_stateid stateid;
 	__u32   layout_type;
 };