Re: [PATCH 1/1] fs: pipe: wakeup readers everytime new data written is to pipe

Sandeep Patil
2021-07-30T19:11:45Z

On 7/29/21 11:01 PM, Linus Torvalds wrote:
> On Thu, Jul 29, 2021 at 3:27 PM Sandeep Patil <sspatil@android.com> wrote:
>>
>> So restore the old behavior to wakeup all readers if any new data is
>> written to the pipe.
>
> Ah-hahh.
>
> I've had this slightly smaller patch waiting for the better part of a year:
>
> https://lore.kernel.org/lkml/CAHk-=wgjR7Nd4CyDoi3SH9kPJp_Td9S-hhFJZMqvp6GS1Ww8eg@mail.gmail.com/
>
> waiting to see if some broken program actually depends on the bogus
> epollet semantics.
>
> Can you verify that that patch fixes the realm-core brokenness too?

Yes, your patch fixes all apps on Android I can test that include this
library.

fwiw, the library seems to have been fixed. However, I am not sure
how long it will be for all apps to take that update :(.

- ssp