Re: [PATCH v2 01/11] splice: copy_splice_read: do the I/O with IOCB_NOWAIT

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To: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH v2 01/11] splice: copy_splice_read: do the I/O with IOCB_NOWAIT
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 21 Dec 2023 00:27:12 -0800
Cc: Jens Axboe <axboe@xxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <d87ac02081f2d698dde10da7da51336afc59b480.1703126594.git.nabijaczleweli@nabijaczleweli.xyz>

On Thu, Dec 21, 2023 at 04:08:45AM +0100, Ahelenia Ziemiańska wrote:
> Otherwise we risk sleeping with the pipe locked for indeterminate

You can't just assume that any ->read_iter support IOCB_NOWAIT.

Follow-Ups:
- Re: [PATCH v2 01/11] splice: copy_splice_read: do the I/O with IOCB_NOWAIT
  - From: Ahelenia Ziemiańska

References:
- [PATCH v2 00/11] Avoid unprivileged splice(file->)/(->socket) pipe exclusion
  - From: Ahelenia Ziemiańska
- [PATCH v2 01/11] splice: copy_splice_read: do the I/O with IOCB_NOWAIT
  - From: Ahelenia Ziemiańska

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