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NeilBrown authored
Various places assume that if nfs4_fl_prepare_ds() turns a non-NULL 'ds', then ds->ds_clp will also be non-NULL. This is not necessasrily true in the case when the process received a fatal signal while nfs4_pnfs_ds_connect is waiting in nfs4_wait_ds_connect(). In that case ->ds_clp may not be set, and the devid may not recently have been marked unavailable. So add a test for ds_clp == NULL and return NULL in that case. Fixes: c23266d5 ("NFS4.1 Fix data server connection race") Signed-off-by:
NeilBrown <neilb@suse.com> Acked-by:
Olga Kornievskaia <aglo@umich.edu> Acked-by:
Adamson, Andy <William.Adamson@netapp.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com>
cfd278c2