Re: NFS locking bug -- limited mtime resolution means nfs_lock() does not provide coherency guarantee

[Andi Kleen]

On Wed, Sep 13, 2000 at 11:51:45AM -0400, Theodore Y. Ts'o wrote:
> 
> So this is a really stupid question, but I'll ask it anyway.  If you
> just need a cookie, is there any way that you might be able to steal a
> few bits from i_generation field for that purpose?  (This assumes that
> we only worry about solving the problem for NFS.)

No, it does not help. i_generation is only in the NFS file handle, but not
in the fattr/file id this is used for cache checks. The NFS file handle
has to stay identical anyways, as long as the inode is not deleted/reused.

-Andi


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
Please read the FAQ at http://www.tux.org/lkml/