From: Christoph Hellwig <hch@lst.de>
Date: Wed, 3 Sep 2014 04:27:59 +0000 (-0700)
Subject: pnfs: add a nfs4_get_deviceid helper
X-Git-Tag: v4.14-rc1~6630^2~40
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=30ff0603ca4d66c8244efc80ea8470d3d04aee8b;p=platform%2Fkernel%2Flinux-rpi.git

pnfs: add a nfs4_get_deviceid helper

This will be used by the block layout driver when splitting extents.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---

diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 3eeca49..d84fe29 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -280,6 +280,13 @@ void nfs4_deviceid_purge_client(const struct nfs_client *);
 int nfs4_deviceid_getdevicelist(struct nfs_server *server,
 		const struct nfs_fh *fh);
 
+static inline struct nfs4_deviceid_node *
+nfs4_get_deviceid(struct nfs4_deviceid_node *d)
+{
+	atomic_inc(&d->ref);
+	return d;
+}
+
 static inline struct pnfs_layout_segment *
 pnfs_get_lseg(struct pnfs_layout_segment *lseg)
 {