From: Dean Hildebrand <seattleplus@xxxxxxxxx>
[was pnfsd: Add use of pnfs exchange flags]
Signed-off-by: Dean Hildebrand <dhildeb@xxxxxxxxxx>
[pnfsd: define a is_ds_only_session helper]
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 4 ++++
include/uapi/linux/nfs4.h | 7 +++++++
2 files changed, 11 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 21c15fc..2c973e6 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1953,6 +1953,10 @@ static __be32 nfsd4_check_cb_sec(struct nfsd4_cb_sec *cbs)
status = nfserr_seq_misordered;
goto out_free_conn;
}
+
+ if (is_ds_only_session(unconf->cl_exchange_flags))
+ cr_ses->flags &= ~SESSION4_BACK_CHAN;
+
old = find_confirmed_client_by_name(&unconf->cl_name, nn);
if (old) {
status = mark_client_expired(old);
diff --git a/include/uapi/linux/nfs4.h b/include/uapi/linux/nfs4.h
index 788128e..028f5fc 100644
--- a/include/uapi/linux/nfs4.h
+++ b/include/uapi/linux/nfs4.h
@@ -125,6 +125,13 @@
#define EXCHGID4_FLAG_USE_PNFS_DS 0x00040000
#define EXCHGID4_FLAG_MASK_PNFS 0x00070000
+static inline bool
+is_ds_only_session(u32 exchange_flags)
+{
+ u32 mask = EXCHGID4_FLAG_USE_PNFS_DS | EXCHGID4_FLAG_USE_PNFS_MDS;
+ return (exchange_flags & mask) == EXCHGID4_FLAG_USE_PNFS_DS;
+}
+
#define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A 0x40000000
#define EXCHGID4_FLAG_CONFIRMED_R 0x80000000
/*
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
