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From: [email protected] (Eric W. Biederman)
To: Al Viro <[email protected]>
Cc: Dmitry Kadashev <[email protected]>,
	Jens Axboe <[email protected]>, io-uring <[email protected]>,
	[email protected]
Subject: Re: [PATCH 1/2] fs: make do_mkdirat() take struct filename
Date: Wed, 31 Mar 2021 11:28:04 -0500	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <20210201152947.GR740243@zeniv-ca> (Al Viro's message of "Mon, 1 Feb 2021 15:29:47 +0000")

Al Viro <[email protected]> writes:

> On Mon, Feb 01, 2021 at 03:00:42PM +0000, Al Viro wrote:
>
>> The last one is the easiest to answer - we want to keep the imported strings
>> around for audit.  It's not so much a proper refcounting as it is "we might
>> want freeing delayed" implemented as refcount.
>
> BTW, regarding io_uring + audit interactions - just how is that supposed to
> work if you offload any work that might lead to audit records (on permission
> checks, etc.) to helper threads?

For people looking into these details.  Things have gotten much better
recently.

The big change is that io_uring helper threads are now proper
threads of the process that is using io_uring.  The io_uring helper
threads just happen to never execute any userspace code.

Eric



  reply	other threads:[~2021-03-31 16:29 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-16  4:45 [PATCH 0/2] io_uring: add mkdirat support Dmitry Kadashev
2020-11-16  4:45 ` [PATCH 1/2] fs: make do_mkdirat() take struct filename Dmitry Kadashev
2021-01-25  4:38   ` Jens Axboe
2021-01-26 22:55     ` Al Viro
2021-02-01 11:09       ` Dmitry Kadashev
2021-02-01 15:00         ` Al Viro
2021-02-01 15:29           ` Al Viro
2021-03-31 16:28             ` Eric W. Biederman [this message]
2021-03-31 16:46               ` Al Viro
2021-02-02  4:39           ` Dmitry Kadashev
2020-11-16  4:45 ` [PATCH 2/2] io_uring: add support for IORING_OP_MKDIRAT Dmitry Kadashev
2020-12-04 10:57 ` [PATCH 0/2] io_uring: add mkdirat support Dmitry Kadashev
2020-12-15 11:43   ` Dmitry Kadashev
2020-12-15 16:20     ` Jens Axboe
2020-12-16  6:05       ` Dmitry Kadashev
2021-01-20  8:21       ` Dmitry Kadashev
2021-01-26 22:35 ` Jens Axboe
2021-01-27 11:06   ` Dmitry Kadashev
2021-01-27 16:22     ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2020-11-11 13:25 Dmitry Kadashev
2020-11-11 13:25 ` [PATCH 1/2] fs: make do_mkdirat() take struct filename Dmitry Kadashev

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