XFS memory allocation deadlock in 2.6.38

[Michel Lespinasse]

On Mon, Mar 28, 2011 at 7:58 AM, Sean Noonan <Sean.Noonan at twosigma.com> wrote:
>> Regarding the deadlock: I am curious to see if it could be made to
>> happen before 5ecfda041e4b4bd858d25bbf5a16c2a6c06d7272. Could you test
>> what happens if you remove the MAP_POPULATE flag from your mmap call,
>> and instead read all pages from userspace right after the mmap ? I
>> expect you would then be able to trigger the deadlock before
>> 5ecfda041e4b4bd858d25bbf5a16c2a6c06d7272.
>
> I still see the deadlock without MAP_POPULATE

Could you test if you see the deadlock before
5ecfda041e4b4bd858d25bbf5a16c2a6c06d7272 without MAP_POPULATE ?

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.