NFS: Add label lifecycle management

This patch adds the lifecycle management for the security label structure
introduced in an earlier patch. The label is not used yet but allocations and
freeing of the structure is handled.

Signed-off-by: Matthew N. Dodd <Matthew.Dodd@sparta.com>
Signed-off-by: Miguel Rodel Felipe <Rodel_FM@dsi.a-star.edu.sg>
Signed-off-by: Phua Eu Gene <PHUA_Eu_Gene@dsi.a-star.edu.sg>
Signed-off-by: Khin Mi Mi Aung <Mi_Mi_AUNG@dsi.a-star.edu.sg>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 12 insertions, 3 deletions

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 58e7bf876e6c..12e8ad85ae50 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -836,6 +836,13 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
                 goto out;
 
         nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
+
+        label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
+        if (IS_ERR(label)) {
+                status = PTR_ERR(label);
+                goto out;
+        }
+
         status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, label);
         if (status != 0) {
                 dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) getattr failed, error=%d\n",
@@ -846,7 +853,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
                         if (!S_ISDIR(inode->i_mode))
                                 set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
                 }
-                goto out;
+                goto err_out;
         }
 
         status = nfs_refresh_inode(inode, fattr);
@@ -854,7 +861,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
                 dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) refresh failed, error=%d\n",
                          inode->i_sb->s_id,
                          (long long)NFS_FILEID(inode), status);
-                goto out;
+                goto err_out;
         }
 
         if (nfsi->cache_validity & NFS_INO_INVALID_ACL)
@@ -864,7 +871,9 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
                 inode->i_sb->s_id,
                 (long long)NFS_FILEID(inode));
 
- out:
+err_out:
+        nfs4_label_free(label);
+out:
         nfs_free_fattr(fattr);
         return status;
 }