Re: [PATCH] nfsd: decrease sc_count directly if fail to queue dl_recall

[cel]

From: Chuck Lever <chuck.lever@xxxxxxxxxx>

On Thu, 10 Apr 2025 09:57:08 +0800, Li Lingfeng wrote:
> A deadlock warning occurred when invoking nfs4_put_stid following a failed
> dl_recall queue operation:
>             T1                            T2
>                                 nfs4_laundromat
>                                  nfs4_get_client_reaplist
>                                   nfs4_anylock_blockers
> __break_lease
>  spin_lock // ctx->flc_lock
>                                    spin_lock // clp->cl_lock
>                                    nfs4_lockowner_has_blockers
>                                     locks_owner_has_blockers
>                                      spin_lock // flctx->flc_lock
>  nfsd_break_deleg_cb
>   nfsd_break_one_deleg
>    nfs4_put_stid
>     refcount_dec_and_lock
>      spin_lock // clp->cl_lock
> 
> [...]

Applied to nfsd-testing, thanks!

[1/1] nfsd: decrease sc_count directly if fail to queue dl_recall
      commit: e8f1e5f463b88ce923eefac447abc2079075f921

--
Chuck Lever