NFSv4: Allow nfs4_opendata_to_nfs4_state to return errors.

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

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3b59c5d..52ba763 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -385,15 +385,19 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
        struct nfs4_state *state = NULL;
        struct nfs_delegation *delegation;
        nfs4_stateid *deleg_stateid = NULL;
+       int ret;
 
+       ret = -EAGAIN;
        if (!(data->f_attr.valid & NFS_ATTR_FATTR))
-               goto out;
+               goto err;
        inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
+       ret = PTR_ERR(inode);
        if (IS_ERR(inode))
-               goto out;
+               goto err;
+       ret = -ENOMEM;
        state = nfs4_get_open_state(inode, data->owner);
        if (state == NULL)
-               goto put_inode;
+               goto err_put_inode;
        if (data->o_res.delegation_type != 0) {
                int delegation_flags = 0;
 
@@ -417,10 +421,12 @@ static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data
                deleg_stateid = &delegation->stateid;
        update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags);
        rcu_read_unlock();
-put_inode:
        iput(inode);
-out:
        return state;
+err_put_inode:
+       iput(inode);
+err:
+       return ERR_PTR(ret);
 }
 
 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
@@ -453,8 +459,9 @@ static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openf
        if (ret != 0)
                return ret; 
        newstate = nfs4_opendata_to_nfs4_state(opendata);
-       if (newstate != NULL)
-               nfs4_close_state(&opendata->path, newstate, openflags);
+       if (IS_ERR(newstate))
+               return PTR_ERR(newstate);
+       nfs4_close_state(&opendata->path, newstate, openflags);
        *res = newstate;
        return 0;
 }
@@ -631,7 +638,7 @@ static void nfs4_open_confirm_release(void *calldata)
                goto out_free;
        nfs_confirm_seqid(&data->owner->so_seqid, 0);
        state = nfs4_opendata_to_nfs4_state(data);
-       if (state != NULL)
+       if (!IS_ERR(state))
                nfs4_close_state(&data->path, state, data->o_arg.open_flags);
 out_free:
        nfs4_opendata_put(data);
@@ -736,7 +743,7 @@ static void nfs4_open_release(void *calldata)
                goto out_free;
        nfs_confirm_seqid(&data->owner->so_seqid, 0);
        state = nfs4_opendata_to_nfs4_state(data);
-       if (state != NULL)
+       if (!IS_ERR(state))
                nfs4_close_state(&data->path, state, data->o_arg.open_flags);
 out_free:
        nfs4_opendata_put(data);
@@ -1036,9 +1043,9 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct
        if (opendata->o_arg.open_flags & O_EXCL)
                nfs4_exclusive_attrset(opendata, sattr);
 
-       status = -ENOMEM;
        state = nfs4_opendata_to_nfs4_state(opendata);
-       if (state == NULL)
+       status = PTR_ERR(state);
+       if (IS_ERR(state))
                goto err_opendata_put;
        nfs4_opendata_put(opendata);
        nfs4_put_state_owner(sp);