From: Christoph Hellwig <[email protected]>
To: Pavel Begunkov <[email protected]>
Cc: Dave Chinner <[email protected]>,
Christian Brauner <[email protected]>,
[email protected], [email protected],
"Darrick J . Wong" <[email protected]>,
[email protected], wu lei <[email protected]>
Subject: Re: [PATCH v2 1/1] iomap: propagate nowait to block layer
Date: Tue, 4 Mar 2025 15:40:00 -0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Tue, Mar 04, 2025 at 10:47:48PM +0000, Pavel Begunkov wrote:
> Are you only concerned about the size being too restrictive or do you
> see any other problems?
You can't know the size beforehand. A stacking block driver can split
the I/O for absolutely any reason it wants, and there is no requirement
to propagate that up to the queue limits. That's why we need to be
able to synchronously return the wouldblock error to get this right.
next prev parent reply other threads:[~2025-03-04 23:40 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-04 12:18 [PATCH v2 1/1] iomap: propagate nowait to block layer Pavel Begunkov
2025-03-04 16:07 ` Christoph Hellwig
2025-03-04 16:41 ` Pavel Begunkov
2025-03-04 16:59 ` Christoph Hellwig
2025-03-04 17:36 ` Jens Axboe
2025-03-04 23:26 ` Christoph Hellwig
2025-03-04 23:43 ` Jens Axboe
2025-03-04 23:49 ` Christoph Hellwig
2025-03-05 0:14 ` Pavel Begunkov
2025-03-05 0:18 ` Pavel Begunkov
2025-03-04 17:54 ` Pavel Begunkov
2025-03-04 23:28 ` Christoph Hellwig
2025-03-04 19:22 ` Darrick J. Wong
2025-03-04 20:35 ` Pavel Begunkov
2025-03-05 0:01 ` Christoph Hellwig
2025-03-05 0:45 ` Pavel Begunkov
2025-03-05 1:34 ` Christoph Hellwig
2025-03-04 21:11 ` Dave Chinner
2025-03-04 22:47 ` Pavel Begunkov
2025-03-04 23:40 ` Christoph Hellwig [this message]
2025-03-05 1:19 ` Dave Chinner
2025-03-05 14:10 ` Christoph Hellwig
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