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authorScott Mayhew <smayhew@redhat.com>2019-05-02 13:32:12 -0400
committerJ. Bruce Fields <bfields@redhat.com>2019-05-03 11:01:38 -0400
commit1c73b9d24f804935dbb06527b768f8f068c93472 (patch)
tree6411712007ecbdf5fc7f876539619902d01e49cd /fs/nfsd
parent5926459e7c897ee348c134f44da520c8bf234b05 (diff)
downloadlinux-1c73b9d24f804935dbb06527b768f8f068c93472.tar.bz2
nfsd: update callback done processing
Instead of having the convention where individual nfsd4_callback_ops->done operations return -1 to indicate the callback path is down, move the check to nfsd4_cb_done. Only mark the callback path down on transport-level errors, not NFS-level errors. The existing logic causes the server to set SEQ4_STATUS_CB_PATH_DOWN just because the client returned an error to a CB_RECALL for a delegation that the client had already done a FREE_STATEID for. But clearly that error doesn't mean that there's anything wrong with the backchannel. Additionally, handle NFS4ERR_DELAY in nfsd4_cb_recall_done. The client returns NFS4ERR_DELAY if it is already in the process of returning the delegation. Signed-off-by: Scott Mayhew <smayhew@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4callback.c9
-rw-r--r--fs/nfsd/nfs4layouts.c2
-rw-r--r--fs/nfsd/nfs4state.c5
3 files changed, 10 insertions, 6 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 7caa3801ce72..b9cbd7189d74 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1122,10 +1122,11 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
rpc_restart_call_prepare(task);
return;
case 1:
- break;
- case -1:
- /* Network partition? */
- nfsd4_mark_cb_down(clp, task->tk_status);
+ switch (task->tk_status) {
+ case -EIO:
+ case -ETIMEDOUT:
+ nfsd4_mark_cb_down(clp, task->tk_status);
+ }
break;
default:
BUG();
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
index 44517fb5c0de..a79e24b79095 100644
--- a/fs/nfsd/nfs4layouts.c
+++ b/fs/nfsd/nfs4layouts.c
@@ -693,7 +693,7 @@ nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task)
ops->fence_client(ls);
else
nfsd4_cb_layout_fail(ls);
- return -1;
+ return 1;
case -NFS4ERR_NOMATCHING_LAYOUT:
trace_nfsd_layout_recall_done(&ls->ls_stid.sc_stateid);
task->tk_status = 0;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 8078314981f5..dfe4b596c2e5 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3970,6 +3970,9 @@ static int nfsd4_cb_recall_done(struct nfsd4_callback *cb,
switch (task->tk_status) {
case 0:
return 1;
+ case -NFS4ERR_DELAY:
+ rpc_delay(task, 2 * HZ);
+ return 0;
case -EBADHANDLE:
case -NFS4ERR_BAD_STATEID:
/*
@@ -3982,7 +3985,7 @@ static int nfsd4_cb_recall_done(struct nfsd4_callback *cb,
}
/*FALLTHRU*/
default:
- return -1;
+ return 1;
}
}