From: Al Viro <[email protected]>
To: Pavel Begunkov <[email protected]>
Cc: [email protected], Jens Axboe <[email protected]>,
[email protected], [email protected]
Subject: Re: [PATCH 0/2] iter revert problems
Date: Mon, 9 Aug 2021 15:52:39 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Mon, Aug 09, 2021 at 12:52:35PM +0100, Pavel Begunkov wrote:
> For the bug description see 2/2. As mentioned there the current problems
> is because of generic_write_checks(), but there was also a similar case
> fixed in 5.12, which should have been triggerable by normal
> write(2)/read(2) and others.
>
> It may be better to enforce reexpands as a long term solution, but for
> now this patchset is quickier and easier to backport.
Umm... Won't that screw the cases where we *are* doing proper
reexpands? AFAICS, with your patches that flag doesn't go away once
it had been set...
next prev parent reply other threads:[~2021-08-09 15:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 11:52 [PATCH 0/2] iter revert problems Pavel Begunkov
2021-08-09 11:52 ` [PATCH 1/2] iov_iter: mark truncated iters Pavel Begunkov
2021-08-09 11:52 ` [PATCH 2/2] io_uring: don't retry with truncated iter Pavel Begunkov
2021-08-09 15:52 ` Al Viro [this message]
2021-08-09 18:56 ` [PATCH 0/2] iter revert problems Pavel Begunkov
2021-08-10 8:47 ` David Laight
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