Re: dcache shrink list corruption?

From: Al Viro
Date: Tue Apr 29 2014 - 13:57:00 EST


On Tue, Apr 29, 2014 at 06:01:39PM +0200, Miklos Szeredi wrote:

> Attached patch is just a starting point (untested). Not sure how to minimize
> contention without adding too much complexity.

Contention isn't the worst problem here - I'd expect the cacheline ping-pong
to hurt more... I agree with the analysis, but I'd really like to avoid that
spinlock ;-/

Let me see if we can avoid that... Oh, well - at least that's a good excuse
to take a break from fucking deadlock analysis around the damn acct(2), most
of VFS and network filesystems ;-/
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