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SubjectRe: [PATCH] block: strip out locking optimization in put_io_context()
From
2012/2/9 Tejun Heo <tj@kernel.org>:
> Hello, Shaohua.
>
> On Wed, Feb 08, 2012 at 04:29:53PM +0800, Shaohua Li wrote:
>> > the test adds mem=4G in a 2 sockets 16 CPU machine.
>> > just make several copy of kernel source in tmpfs (so there is swap
>> > depending on your
>> > memory size) and run kernel build in the kernel source in the meaning time.
>> > there is only one swap device which is a rotating disk.
>> >
>> > I'll test both patches soon.
>>
>> Tried all the options, the regression still exists. Any new idea?
>> I'll spend some time on it if I can get anything
>
> Can you please try the following one?  Thanks a lot!
doesn't work.
I also double confirmed b2efa05265d62 causes the regression
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