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

From: Andi Kleen (ak@suse.de)
Date: Tue Sep 12 2000 - 18:07:44 EST


On Tue, Sep 12, 2000 at 09:10:56PM +0200, Trond Myklebust wrote:
> Making mtime a true 64-bit cookie on Linux servers would be a solution
> that works on all clients.

Making mtime 64bit would also be useful for local parallel make runs,
the current second resolution leads to race conditions on bigger SMP boxes.

Unfortunately the only FS that supports <s on disk timestamps currently
is XFS afaik, and there is no VFS interface for it.

-Andi

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