On Mon, May 15, 2023 at 06:19:41PM +0200, Kevin Wolf wrote:
> > > @@ -3724,8 +3726,10 @@ qcow2_co_create(BlockdevCreateOptions
> > > *create_options, Error **errp)
> > > goto out;
> > > }
> > >
> > > +bdrv_graph_co_rdlock();
> > > ret = qcow2_alloc_clusters(blk_bs(blk),
Am 12.05.2023 um 18:12 hat Eric Blake geschrieben:
>
> On Wed, May 10, 2023 at 10:35:54PM +0200, Kevin Wolf wrote:
> >
> > These are functions that modify the graph, so they must be able to take
> > a writer lock. This is impossible if they already hold the reader lock.
> > If they need a reader
On Wed, May 10, 2023 at 10:35:54PM +0200, Kevin Wolf wrote:
>
> These are functions that modify the graph, so they must be able to take
> a writer lock. This is impossible if they already hold the reader lock.
> If they need a reader lock for some of their operations, they should
> take it inter
These are functions that modify the graph, so they must be able to take
a writer lock. This is impossible if they already hold the reader lock.
If they need a reader lock for some of their operations, they should
take it internally.
Many of them go through blk_*(), which will always take the lock
