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Message-ID: <96114bec-1df7-0dcb-ec99-4f907587658d@linuxfoundation.org>
Date: Mon, 21 Nov 2022 15:32:02 -0700
From: Shuah Khan <skhan@...uxfoundation.org>
To: Benjamin Coddington <bcodding@...hat.com>
Cc: David Howells <dhowells@...hat.com>, netdev@...r.kernel.org,
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Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v1 2/3] Treewide: Stop corrupting socket's task_frag
On 11/21/22 15:01, Benjamin Coddington wrote:
> On 21 Nov 2022, at 16:43, Shuah Khan wrote:
>
>> On 11/21/22 14:40, Shuah Khan wrote:
>>> On 11/21/22 07:34, Benjamin Coddington wrote:
>>>> On 21 Nov 2022, at 8:56, David Howells wrote:
>>>>
>>>>> Benjamin Coddington <bcodding@...hat.com> wrote:
>>>>>
>>>>>> Since moving to memalloc_nofs_save/restore, SUNRPC has stopped setting the
>>>>>> GFP_NOIO flag on sk_allocation which the networking system uses to decide
>>>>>> when it is safe to use current->task_frag.
>>>>>
>>>>> Um, what's task_frag?
>>>>
>>>> Its a per-task page_frag used to coalesce small writes for networking -- see:
>>>>
>>>> 5640f7685831 net: use a per task frag allocator
>>>>
>>>> Ben
>>>>
>>>>
>>>
>>> I am not seeing this in the mainline. Where can find this commit?
>>>
>>
>> Okay. I see this commit in the mainline. However, I don't see the
>> sk_use_task_frag in mainline.
>
> sk_use_task_frag is in patch 1/3 in this posting.
>
> https://lore.kernel.org/netdev/26d98c8f-372b-b9c8-c29f-096cddaff149@linuxfoundation.org/T/#m3271959c4cf8dcff1c0c6ba023b2b3821d9e7e99
>
Aha. I don't have 1/3 in my Inbox - I think it would make
sense to cc people on the first patch so we can understand
the premise for the change.
thanks,
-- Shuah
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