fc042b6935
When using cp to copy a file under the following circumstanes: - original file in on an NFS filesystem - destination file is on the same NFS filesystem - the file is less than 8Mbytes in size - the file is larger than 65536 bytes in size the cp process can get frozen in device-wait and never wake up (cp uses mmap() in this case). A small change to allocbuf() fixes this.