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Re: [Libcdio-devel] [PATCH] Multiprocess compatible get_media_changed_li

From: Rocky Bernstein
Subject: Re: [Libcdio-devel] [PATCH] Multiprocess compatible get_media_changed_linux using the new CDROM_TIMED_MEDIA_CHANGED ioctl
Date: Sun, 23 Jan 2022 16:17:47 -0500

Thanks for the patch. It should be applied in 96a1030c now. Please double
check though.

On Sun, Jan 23, 2022 at 11:46 AM Lukas Prediger <> wrote:

> Here's a patch that I posted also to a couple of days
> ago. However, I'm not sure if that is currently actively checked, so I
> wanted to take the opportunity of posting to this mailing list as well:
> Previously get_media_changed under linux only indicated a media change
> for one of all concurrently requesting processes due to a shortcoming of
> the kernels CDROM_MEDIA_CHANGED ioctl request.
> The new CDROM_TIMED_MEDIA_CHANGE ioctl introduced with Linux v5.16
> now allows media change detection to work robustly for multiple processes.
> This patch adapts libcdio to use this new ioctl request if compiled
> against kernel v5.16 or newer. It retains the old behavior for older
> kernels.
> Link to the patch posting on
> Best,
> Lukas

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