[PATCH] [V2] NFSv4: add declaration of current_stateid

["Ben Dooks (Codethink)" <ben.dooks@codethink.co.uk>]

From: Ben Dooks <ben.dooks@codethink.co.uk>

The current_stateid is exported from nfs4state.c but not
declared in any of the headers. Add to nfs4_fs.h to
remove the following warning:

fs/nfs/nfs4state.c:80:20: warning: symbol 'current_stateid' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: linux-nfs@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

chnages since v1:
- removed extra definition of current_stateid
- renamed nfs4_stateid_is_current's current_stateid to avoid shadow
---
 fs/nfs/nfs4_fs.h  | 2 ++
 fs/nfs/nfs4proc.c | 6 +++---
 fs/nfs/pnfs.c     | 2 --
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 16b2e5cc3e94..330f45268060 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -445,6 +445,8 @@ extern void nfs4_set_lease_period(struct nfs_client *clp,
 
 
 /* nfs4state.c */
+extern const nfs4_stateid current_stateid;
+
 const struct cred *nfs4_get_clid_cred(struct nfs_client *clp);
 const struct cred *nfs4_get_machine_cred(struct nfs_client *clp);
 const struct cred *nfs4_get_renew_cred(struct nfs_client *clp);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ab8ca20fd579..ef914d8ba5b7 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5101,12 +5101,12 @@ static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
 		const struct nfs_lock_context *l_ctx,
 		fmode_t fmode)
 {
-	nfs4_stateid current_stateid;
+	nfs4_stateid _current_stateid;
 
 	/* If the current stateid represents a lost lock, then exit */
-	if (nfs4_set_rw_stateid(&current_stateid, ctx, l_ctx, fmode) == -EIO)
+	if (nfs4_set_rw_stateid(&_current_stateid, ctx, l_ctx, fmode) == -EIO)
 		return true;
-	return nfs4_stateid_match(stateid, &current_stateid);
+	return nfs4_stateid_match(stateid, &_current_stateid);
 }
 
 static bool nfs4_error_stateid_expired(int err)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index bb80034a7661..cec3070ab577 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2160,8 +2160,6 @@ _pnfs_grab_empty_layout(struct inode *ino, struct nfs_open_context *ctx)
 	return NULL;
 }
 
-extern const nfs4_stateid current_stateid;
-
 static void _lgopen_prepare_attached(struct nfs4_opendata *data,
 				     struct nfs_open_context *ctx)
 {
-- 
2.23.0