Re: [Xen-devel] [PATCH v13 2/5] xenbus/backend: Protect xenbus callback with lock

[Jürgen Groß <jgross@xxxxxxxx>]

On 18.12.19 19:37, SeongJae Park wrote:
> From: SeongJae Park <sjpark@xxxxxxxxx>
>
> A driver's 'reclaim_memory' callback can race with 'probe' or 'remove'
> because it will be called whenever memory pressure is detected.  To
> avoid such race, this commit embeds a spinlock in each 'xenbus_device'
> and make 'xenbus' to hold the lock while the corresponded callbacks are
> running.
>
> Signed-off-by: SeongJae Park <sjpark@xxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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