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-rw-r--r--fs/nfs/nfs4proc.c4
-rw-r--r--fs/nfs/nfs4state.c38
2 files changed, 29 insertions, 13 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3508d8238826..7016eaadf555 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -10622,7 +10622,9 @@ static void nfs4_disable_swap(struct inode *inode)
*/
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
- nfs4_schedule_state_manager(clp);
+ set_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state);
+ clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
+ wake_up_var(&clp->cl_state);
}
static const struct inode_operations nfs4_dir_inode_operations = {
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 0bc160fbabec..9a5d911a7edc 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1209,16 +1209,26 @@ void nfs4_schedule_state_manager(struct nfs_client *clp)
{
struct task_struct *task;
char buf[INET6_ADDRSTRLEN + sizeof("-manager") + 1];
+ struct rpc_clnt *clnt = clp->cl_rpcclient;
+ bool swapon = false;
- if (clp->cl_rpcclient->cl_shutdown)
+ if (clnt->cl_shutdown)
return;
set_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state);
- if (test_and_set_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state) != 0) {
- wake_up_var(&clp->cl_state);
- return;
+
+ if (atomic_read(&clnt->cl_swapper)) {
+ swapon = !test_and_set_bit(NFS4CLNT_MANAGER_AVAILABLE,
+ &clp->cl_state);
+ if (!swapon) {
+ wake_up_var(&clp->cl_state);
+ return;
+ }
}
- set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state);
+
+ if (test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) != 0)
+ return;
+
__module_get(THIS_MODULE);
refcount_inc(&clp->cl_count);
@@ -1235,8 +1245,9 @@ void nfs4_schedule_state_manager(struct nfs_client *clp)
__func__, PTR_ERR(task));
if (!nfs_client_init_is_complete(clp))
nfs_mark_client_ready(clp, PTR_ERR(task));
+ if (swapon)
+ clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
nfs4_clear_state_manager_bit(clp);
- clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
nfs_put_client(clp);
module_put(THIS_MODULE);
}
@@ -2748,22 +2759,25 @@ static int nfs4_run_state_manager(void *ptr)
allow_signal(SIGKILL);
again:
- set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state);
nfs4_state_manager(clp);
- if (atomic_read(&cl->cl_swapper)) {
+
+ if (test_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state) &&
+ !test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state)) {
wait_var_event_interruptible(&clp->cl_state,
test_bit(NFS4CLNT_RUN_MANAGER,
&clp->cl_state));
- if (atomic_read(&cl->cl_swapper) &&
- test_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state))
+ if (!atomic_read(&cl->cl_swapper))
+ clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
+ if (refcount_read(&clp->cl_count) > 1 && !signalled() &&
+ !test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state))
goto again;
/* Either no longer a swapper, or were signalled */
+ clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
}
- clear_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state);
if (refcount_read(&clp->cl_count) > 1 && !signalled() &&
test_bit(NFS4CLNT_RUN_MANAGER, &clp->cl_state) &&
- !test_and_set_bit(NFS4CLNT_MANAGER_AVAILABLE, &clp->cl_state))
+ !test_and_set_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state))
goto again;
nfs_put_client(clp);