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From: Sandeep Patil <sspatil@android.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	David Howells <dhowells@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable <stable@vger.kernel.org>,
	Android Kernel Team <kernel-team@android.com>
Subject: Re: [PATCH 1/1] fs: pipe: wakeup readers everytime new data written is to pipe
Date: Fri, 30 Jul 2021 19:11:29 +0000	[thread overview]
Message-ID: <cee514d6-8551-8838-6d61-098d04e226ca@android.com> (raw)
In-Reply-To: <CAHk-=wh-DWvsFykwAy6uwyv24nasJ39d7SHT+15x+xEXBtSm_Q@mail.gmail.com>

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

  reply	other threads:[~2021-07-30 19:11 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29 22:26 [PATCH 0/1] Revert change in pipe reader wakeup behavior Sandeep Patil
2021-07-29 22:26 ` [PATCH 1/1] fs: pipe: wakeup readers everytime new data written is to pipe Sandeep Patil
2021-07-29 23:01   ` Linus Torvalds
2021-07-30 19:11     ` Sandeep Patil [this message]
2021-07-30 19:23       ` Linus Torvalds
2021-07-30 19:47         ` Sandeep Patil
2021-07-30 22:06           ` Linus Torvalds
2021-07-30 22:53         ` Linus Torvalds
2021-07-30 22:55           ` Linus Torvalds
2021-07-31  5:32             ` Greg Kroah-Hartman
2021-08-02 18:59           ` Sandeep Patil

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