NFS: Reduce the stack footprint of nfs_lookup

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

1 files changed, 6 insertions, 4 deletions

diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index e701002694e5..72334c19d481 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -144,14 +144,12 @@ static int
 nfs3_proc_lookup(struct inode *dir, struct qstr *name,
                  struct nfs_fh *fhandle, struct nfs_fattr *fattr)
 {
-        struct nfs_fattr        dir_attr;
         struct nfs3_diropargs   arg = {
                 .fh             = NFS_FH(dir),
                 .name           = name->name,
                 .len            = name->len
         };
         struct nfs3_diropres    res = {
-                .dir_attr       = &dir_attr,
                 .fh             = fhandle,
                 .fattr          = fattr
         };
@@ -163,16 +161,20 @@ nfs3_proc_lookup(struct inode *dir, struct qstr *name,
         int                     status;
 
         dprintk("NFS call  lookup %s\n", name->name);
-        nfs_fattr_init(&dir_attr);
+        res.dir_attr = nfs_alloc_fattr();
+        if (res.dir_attr == NULL)
+                return -ENOMEM;
+
         nfs_fattr_init(fattr);
         status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
-        nfs_refresh_inode(dir, &dir_attr);
+        nfs_refresh_inode(dir, res.dir_attr);
         if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
                 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
                 msg.rpc_argp = fhandle;
                 msg.rpc_resp = fattr;
                 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
         }
+        nfs_free_fattr(res.dir_attr);
         dprintk("NFS reply lookup: %d\n", status);
         return status;
 }