Re: [PATCH] ceph: don't leak snap_rwsem in handle_cap_grant

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On Mon, 2022-06-06 at 11:12 +0100, Luís Henriques wrote:
> Jeff Layton <jlayton@xxxxxxxxxx> writes:
> 
> > When handle_cap_grant is called on an IMPORT op, then the snap_rwsem is
> > held and the function is expected to release it before returning. It
> > currently fails to do that in all cases which could lead to a deadlock.
> > 
> > URL: https://tracker.ceph.com/issues/55857
> 
> This looks good.  Maybe it could have here a 'Fixes: e8a4d26771547'.
> Otherwise:
> 
> Reviewed-by: Luís Henriques <lhenriques@xxxxxxx>
> 
> Cheers,

Thanks,

Actually, I think this got broken in 6f05b30ea063a2 (ceph: reset
i_requested_max_size if file write is not wanted).

The problem is the && part of the condition. We need to release the
rwsem regardless of whether ci->i_auth_cap == cap.
-- 
Jeff Layton <jlayton@xxxxxxxxxx>




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