Re: [Q] missing unused dentry in prune_dcache()?
From: David Howells
Date: Fri Oct 27 2006 - 08:28:14 EST
Vasily Averin <vvs@xxxxx> wrote:
> > Vasily Averin <vvs@xxxxx> wrote:
> >> Therefore I believe that my patch is optimal solution.
> > I'm not sure that prune_dcache() is particularly optimal.
>
> I means that my patch is optimal for problem in subject.
I didn't say it wasn't.
> I would like to ask you to approve it and we will go to next issue.
I did ack it didn't I? I must fix my mail client so that it doesn't
automatically remove my email address from the To/Cc fields when I'm replying
to a message:-/
> We have seen that umount (and remount) can work very slowly, it was cycled
> inside shrink_dcache_sb() up to several hours with taken s_umount semaphore.
umount at least should be fixed as that should no longer use
shrink_dcache_sb().
> We are trying to resolve this issue by using per-sb lru list. I'm preparing
> the patch for 2.6.19-rc3 right now and going to send it soon.
That sounds tricky; you have to check all your LRU lists to find the LRU
dentry.
David
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