Index: sys/fs/nandfs/nandfs_segment.c =================================================================== --- sys/fs/nandfs/nandfs_segment.c +++ sys/fs/nandfs/nandfs_segment.c @@ -479,6 +479,7 @@ struct nandfs_node *nandfs_node; struct vnode *vp, *mvp; struct thread *td; + struct bufobj *bo; int error, update; td = curthread; @@ -499,17 +500,21 @@ update = 1; } + bo = &vp->v_bufobj; + BO_LOCK(bo); if (vp->v_bufobj.bo_dirty.bv_cnt) { error = nandfs_iterate_dirty_buf(vp, seginfo, 0); if (error) { nandfs_error("%s: cannot iterate vnode:%p " "err:%d\n", __func__, vp, error); vput(vp); + BO_UNLOCK(bo); return (error); } update = 1; } else vput(vp); + BO_UNLOCK(bo); if (update) nandfs_node_update(nandfs_node);