Linus Torvalds wrote:
> 
> On Sat, 5 May 2001, Manfred Spraul wrote:
> >
> > * missing/wrong lock_kernel calls in fs/fcntl.c: getlk/setlk run without
> > the big kernel lock. The ..64 function acquire the lock.
> 
> This is wrong. The big lock (if it is needed, but I thought the current
> locking should be safe) should be pushed down into the point where it is
> needed, not at the caller..
>
Ok, I've removed the locks from fs/fcntl.c and added them into
fs/locks.c:

* fcntl_getlease dereferences filp->f_dentry->d_inode->i_flock. Race
with multithreaded app: sys_close()->filp_close()->locks_remove_posix()
+ fcntl_getlease()
* according to Documentation/filesystems/Locking, f_op->lock() is called
with the blk acquired. lock added around that call in
fcntl_{get,set}lk{,64}

I've attached a new patch.

--
	Manfred