NFS: Reduce stack footprint of nfs_statfs()

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 9 insertions, 5 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index dd589dee1ee..98d1ab8bf8f 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -423,15 +423,19 @@ static int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
         unsigned char blockbits;
         unsigned long blockres;
         struct nfs_fh *fh = NFS_FH(dentry->d_inode);
-        struct nfs_fattr fattr;
-        struct nfs_fsstat res = {
-                        .fattr = &fattr,
-        };
-        int error;
+        struct nfs_fsstat res;
+        int error = -ENOMEM;
+
+        res.fattr = nfs_alloc_fattr();
+        if (res.fattr == NULL)
+                goto out_err;
 
         error = server->nfs_client->rpc_ops->statfs(server, fh, &res);
+
+        nfs_free_fattr(res.fattr);
         if (error < 0)
                 goto out_err;
+
         buf->f_type = NFS_SUPER_MAGIC;
 
         /*