From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
commit e3c8dc761ead061da2220ee8f8132f729ac3ddfe upstream.
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: e23008ec81ef3 ("NFSv4 reduce attribute requests for open reclaim")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v3.7+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1878,8 +1878,9 @@ _nfs4_opendata_reclaim_to_nfs4_state(str
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;
@@ -1944,8 +1945,11 @@ _nfs4_opendata_to_nfs4_state(struct nfs4
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;
