NFSv4: Retry CLOSE and DELEGRETURN on NFS4ERR_OLD_STATEID.
If we're racing with an OPEN, then retry the operation instead of
declaring it a success.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[Andrew W Elble: Fix a typo in nfs4_refresh_open_stateid]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 6e3f372..cee1e00 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -986,6 +986,22 @@
return ret;
}
+bool nfs4_refresh_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
+{
+ bool ret;
+ int seq;
+
+ do {
+ ret = false;
+ seq = read_seqbegin(&state->seqlock);
+ if (nfs4_state_match_open_stateid_other(state, dst)) {
+ dst->seqid = state->open_stateid.seqid;
+ ret = true;
+ }
+ } while (read_seqretry(&state->seqlock, seq));
+ return ret;
+}
+
static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
{
const nfs4_stateid *src;