NFS: Reduce stack footprint of nfs3_proc_readlink()

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

1 files changed, 10 insertions, 5 deletions

diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 982a81bb7257..088dceb513b8 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -234,7 +234,7 @@ out:
 static int nfs3_proc_readlink(struct inode *inode, struct page *page,
                 unsigned int pgbase, unsigned int pglen)
 {
-        struct nfs_fattr        fattr;
+        struct nfs_fattr        *fattr;
         struct nfs3_readlinkargs args = {
                 .fh             = NFS_FH(inode),
                 .pgbase         = pgbase,
@@ -244,14 +244,19 @@ static int nfs3_proc_readlink(struct inode *inode, struct page *page,
         struct rpc_message msg = {
                 .rpc_proc       = &nfs3_procedures[NFS3PROC_READLINK],
                 .rpc_argp       = &args,
-                .rpc_resp       = &fattr,
         };
-        int                     status;
+        int status = -ENOMEM;
 
         dprintk("NFS call  readlink\n");
-        nfs_fattr_init(&fattr);
+        fattr = nfs_alloc_fattr();
+        if (fattr == NULL)
+                goto out;
+        msg.rpc_resp = fattr;
+
         status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
-        nfs_refresh_inode(inode, &fattr);
+        nfs_refresh_inode(inode, fattr);
+        nfs_free_fattr(fattr);
+out:
         dprintk("NFS reply readlink: %d\n", status);
         return status;
 }