diff options
Diffstat (limited to 'fs/nfs/nfs4state.c')
| -rw-r--r-- | fs/nfs/nfs4state.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 485e95e8fd62..6891dedd80f1 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -142,6 +142,11 @@ static int nfs41_setup_state_renewal(struct nfs_client *clp) return status; } +/* + * Back channel returns NFS4ERR_DELAY for new requests when + * NFS4_SESSION_DRAINING is set so there is no work to be done when draining + * is ended. + */ static void nfs4_end_drain_session(struct nfs_client *clp) { struct nfs4_session *ses = clp->cl_session; @@ -165,22 +170,32 @@ static void nfs4_end_drain_session(struct nfs_client *clp) } } -static int nfs4_begin_drain_session(struct nfs_client *clp) +static int nfs4_wait_on_slot_tbl(struct nfs4_slot_table *tbl) { - struct nfs4_session *ses = clp->cl_session; - struct nfs4_slot_table *tbl = &ses->fc_slot_table; - spin_lock(&tbl->slot_tbl_lock); - set_bit(NFS4_SESSION_DRAINING, &ses->session_state); if (tbl->highest_used_slotid != -1) { - INIT_COMPLETION(ses->complete); + INIT_COMPLETION(tbl->complete); spin_unlock(&tbl->slot_tbl_lock); - return wait_for_completion_interruptible(&ses->complete); + return wait_for_completion_interruptible(&tbl->complete); } spin_unlock(&tbl->slot_tbl_lock); return 0; } +static int nfs4_begin_drain_session(struct nfs_client *clp) +{ + struct nfs4_session *ses = clp->cl_session; + int ret = 0; + + set_bit(NFS4_SESSION_DRAINING, &ses->session_state); + /* back channel */ + ret = nfs4_wait_on_slot_tbl(&ses->bc_slot_table); + if (ret) + return ret; + /* fore channel */ + return nfs4_wait_on_slot_tbl(&ses->fc_slot_table); +} + int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred) { int status; |