Re: [Lse-tech] Re: [RFC] dcache scalability patch (2.4.17)

From: Alexander Viro (viro@math.psu.edu)
Date: Sat Jul 13 2002 - 12:33:10 EST


On Sat, 13 Jul 2002, Paul Menage wrote:

> - accessing foo/../bar, won't mark foo as referenced, even though it
> might be being referenced frequently. Probably not a common case for foo
> to be accessed exclusively in this way, but it could be fixed by marking
> a dentry referenced when following ".."

It certainly will. Look - until ->d_count hits zero referenced bit is
not touched or looked at. At all.

Look at the code. There is _no_ aging for dentries with positive ->d_count.
They start aging only when after they enter unused_list...

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