linux-kernel - Re: [patch] fs: scale vfsmount refcount (was Re: rcu-walk and dcache scaling tree update and status)

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Message-ID: <20101213034322.GA7975@amd>
Date:	Mon, 13 Dec 2010 14:43:22 +1100
From:	Nick Piggin <npiggin@...nel.dk>
To:	Nick Piggin <npiggin@...nel.dk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch] fs: scale vfsmount refcount (was Re: rcu-walk and
  dcache scaling tree update and status)

On Mon, Dec 13, 2010 at 02:31:10PM +1100, Nick Piggin wrote:
> (Yes this little bouncing atomic hurts, badly, even on my small 2s12c
> tightly connected system on the parallel git diff workload -- because
> there are other bouncing kernel cachelines in this workload).
          ^^^
      are no other

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