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authorAndy Adamson <andros@netapp.com>2013-06-19 16:39:44 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-06-20 10:19:21 -0400
commit62f288a02f97bd9f6b2361a6fff709729fe9e110 (patch)
treee31c125128ac6353e1a755e1a01999f5084d8393 /fs/nfs/nfs4state.c
parent7dc0ac70f89d4281094aaa82cab1cb995f298287 (diff)
NFSv4.1 end back channel session draining
We need to ensure that we clear NFS4_SLOT_TBL_DRAINING on the back channel when we're done recovering the session. Regression introduced by commit 774d5f14e (NFSv4.1 Fix a pNFS session draining deadlock) Signed-off-by: Andy Adamson <andros@netapp.com> [Trond: Changed order to start back-channel first. Minor code cleanup] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org [>=3.10]
Diffstat (limited to 'fs/nfs/nfs4state.c')
-rw-r--r--fs/nfs/nfs4state.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 5244ffd304e8..b0e42d7a19a1 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -228,19 +228,8 @@ 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)
+static void nfs4_end_drain_slot_table(struct nfs4_slot_table *tbl)
{
- struct nfs4_session *ses = clp->cl_session;
- struct nfs4_slot_table *tbl;
-
- if (ses == NULL)
- return;
- tbl = &ses->fc_slot_table;
if (test_and_clear_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) {
spin_lock(&tbl->slot_tbl_lock);
nfs41_wake_slot_table(tbl);
@@ -248,6 +237,16 @@ static void nfs4_end_drain_session(struct nfs_client *clp)
}
}
+static void nfs4_end_drain_session(struct nfs_client *clp)
+{
+ struct nfs4_session *ses = clp->cl_session;
+
+ if (ses != NULL) {
+ nfs4_end_drain_slot_table(&ses->bc_slot_table);
+ nfs4_end_drain_slot_table(&ses->fc_slot_table);
+ }
+}
+
/*
* Signal state manager thread if session fore channel is drained
*/