linux-kernel - Re: [PATCH v2 01/11] splice: copy_splice_read: do the I/O with IOCB

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Message-ID: <ZYP24DCMYiwc6V/4@infradead.org>
Date: Thu, 21 Dec 2023 00:27:12 -0800
From: Christoph Hellwig <hch@...radead.org>
To: Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
Cc: Jens Axboe <axboe@...nel.dk>, Christian Brauner <brauner@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 01/11] splice: copy_splice_read: do the I/O with
 IOCB_NOWAIT

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.