Re: more dput lock contentions in 2.6.38-rc?

[Nick Piggin]

On Tue, Jan 25, 2011 at 1:46 PM, Shaohua Li <shaohua.li@xxxxxxxxx> wrote:
> On Tue, Jan 25, 2011 at 10:09:48AM +0800, Nick Piggin wrote:

>> What does an actual snippet from perf with callgraphs look like?
> here is another perf report

OK well there a lot of hits reading /proc/mounts and statfs, but still
more that appear to be coming from fstat/open/unlink/rename.

It looks like they are coming from dropping rcu walk along the path
rather than a full restart. So we will have to see where those are
coming from. My stats patch will help with that.

Thanks,
Nick
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