Re: [Xen-devel] [PATCH v2 6/9] libxl_disk: Cut libxl_cdrom_insert into steps ..

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Anthony PERARD writes ("[PATCH v2 6/9] libxl_disk: Cut libxl_cdrom_insert into 
steps .."):
> .. and use a new "slow" lock to avoid holding the userdata lock across
> several functions.
> 
> This patch cuts libxl_cdrom_insert into different step/function but
> there are still called synchronously. (Taking the ev_lock is the only
> step that might be asynchronous.) A later patch will call them
> asynchronously when QMP is involved.
> 
> Thee userdata lock (json_lock) use to protect against concurrent change
> of cdrom is replaced by an ev_lock which can be held across different
> CTX_LOCK sections. The json_lock is still used when reading/modifying
> the domain userdata (mandatory) and update xenstore (mostly because
> it's updated as the same time as the userdata).
> 
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

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