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NFSv4: Check the return value of update_open_stateid()

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Ensure that we always check the return value of update_open_stateid()
so that we can retry if the update of local state failed. This fixes
infinite looping on state recovery.

Fixes: e23008ec81 ("NFSv4 reduce attribute requests for open reclaim")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v3.7+
This commit is contained in:
Trond Myklebust 2019-07-29 18:25:00 +01:00
parent ad11408970
commit e3c8dc761e
1 changed files with 8 additions and 4 deletions
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12
fs/nfs/nfs4proc.c
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@ -1915,8 +1915,9 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
if (data->o_res.delegation_type != 0)
nfs4_opendata_check_deleg(data, state);
update:
update_open_stateid(state, &data->o_res.stateid, NULL,
data->o_arg.fmode);
if (!update_open_stateid(state, &data->o_res.stateid,
NULL, data->o_arg.fmode))
return ERR_PTR(-EAGAIN);
refcount_inc(&state->count);
return state;
@ -1981,8 +1982,11 @@ _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
if (data->o_res.delegation_type != 0)
nfs4_opendata_check_deleg(data, state);
update_open_stateid(state, &data->o_res.stateid, NULL,
data->o_arg.fmode);
if (!update_open_stateid(state, &data->o_res.stateid,
NULL, data->o_arg.fmode)) {
nfs4_put_open_state(state);
state = ERR_PTR(-EAGAIN);
}
out:
nfs_release_seqid(data->o_arg.seqid);
return state;