[race][RFC] d_flags use

[Alexander Viro]

On Thu, 12 Apr 2001, Andreas Dilger wrote:

> Al writes:
> > We _have_ VM pressure there. However, such loads had never been used, so
> > there's no wonder that system gets unbalanced under them.
> > 
> > I suspect that simple replacement of goto next; with continue; in the
> > fs/dcache.c::prune_dcache() may make situation seriously better.
> 
> Yes, it appears that this would be a bug.  We were only _checking_
> "count" dentries, rather than pruning "count" dentries.
> 
> Testing continues.

Uh-oh... After looking at prune_dcache for a minute... Folks, what
protects ->d_flags? That may very well be the reason of some NFS
and autofs problems.

If nobody objects I'll go for test_bit/set_bit/clear_bit here.
                                                                Al

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