Hi On Sat, Apr 12, 2014 at 12:07 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > I bet this is missing from lots of places. For example, I can't find > any write_access stuff in the rdma code. > > I suspect that the VM_DENYWRITE code is just generally racy. So what does S_IMMUTABLE do to prevent such races? I somehow suspect it's broken in that regard, too. I really dislike pinning pages like this, but if people want to keep it I guess I have to scan all shmem-inode pages before changing seals. Thanks David -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>