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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-01-23 17:15:37 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-01-24 17:12:48 -0500
commitf74a834a0e1b35e39e917a1a88a62817610ee20b (patch)
tree2500d98602d8121263f21711c92c5c6d00c9f909 /fs/nfs
parentf4f58ed19b9ee303985f47352f795631a979294c (diff)
downloadlinux-f74a834a0e1b35e39e917a1a88a62817610ee20b.tar.bz2
NFSv4.x: CB_SEQUENCE should return NFS4ERR_DELAY if still executing
See RFC5661 Section 2.10.6.2: if retrying a request, and the old one is still in progress, we must return NFS4ERR_DELAY as the reply to sequence. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/callback_proc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 83a66a8f40f2..e0844fdbd9ac 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -375,6 +375,8 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
if (args->csa_sequenceid == slot->seq_nr) {
dprintk("%s seqid %u is a replay\n",
__func__, args->csa_sequenceid);
+ if (tbl->highest_used_slotid != NFS4_NO_SLOT)
+ return htonl(NFS4ERR_DELAY);
/* Signal process_op to set this error on next op */
if (args->csa_cachethis == 0)
return htonl(NFS4ERR_RETRY_UNCACHED_REP);