[DLM] confirm master for recovered waiting requests
Fixing the following scenario: - A request is on the waiters list waiting for a reply from a remote node. - The request is the first one on the resource, so first_lkid is set. - The remote node fails causing recovery. - During recovery the requesting node becomes master. - The request is now processed locally instead of being a remote operation. - At this point we need to call confirm_master() on the resource since we're certain we're now the master node. This will clear first_lkid. - We weren't calling confirm_master(), so first_lkid was not being cleared causing subsequent requests on that resource to get stuck. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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@ -3283,6 +3283,8 @@ int dlm_recover_waiters_post(struct dlm_ls *ls)
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hold_rsb(r);
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lock_rsb(r);
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_request_lock(r, lkb);
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if (is_master(r))
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confirm_master(r, 0);
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unlock_rsb(r);
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put_rsb(r);
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break;
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