Here is another cleanup/bugfix...
----------------------------------------------------------------------------------------------------
NFSv41: Clean up slot table management
From: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
We no longer need to maintain a distinction between nfs41_sequence_done and
nfs41_sequence_free_slot.
This fixes a number of slot table leakages in the NFSv4.1 code.
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
fs/nfs/internal.h | 17 +-------------
fs/nfs/nfs4proc.c | 64 ++++++++++++-----------------------------------------
fs/nfs/read.c | 13 ++---------
fs/nfs/unlink.c | 3 +-
fs/nfs/write.c | 4 +--
5 files changed, 21 insertions(+), 80 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 83a9284..b1a020c 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -197,8 +197,7 @@ extern const u32 nfs41_maxwrite_overhead;
#endif
/* nfs4proc.c */
-extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *,
- struct nfs4_sequence_res *);
+extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *);
#ifdef CONFIG_NFS_V4
extern struct rpc_procinfo nfs4_procedures[];
#endif
@@ -275,20 +274,6 @@ extern int _nfs4_call_sync_session(struct nfs_server *server,
struct nfs4_sequence_res *res,
int cache_reply);
-#ifdef CONFIG_NFS_V4_1
-extern void nfs41_sequence_free_slot(const struct nfs_client *,
- struct nfs4_sequence_res *res);
-#endif /* CONFIG_NFS_V4_1 */
-
-static inline void nfs4_sequence_free_slot(const struct nfs_client *clp,
- struct nfs4_sequence_res *res)
-{
-#ifdef CONFIG_NFS_V4_1
- if (nfs4_has_session(clp))
- nfs41_sequence_free_slot(clp, res);
-#endif /* CONFIG_NFS_V4_1 */
-}
-
/*
* Determine the device name as a string
*/
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 71993f1..906585b 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -341,15 +341,11 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
free_slotid, tbl->highest_used_slotid);
}
-void nfs41_sequence_free_slot(const struct nfs_client *clp,
+static void nfs41_sequence_free_slot(const struct nfs_client *clp,
struct nfs4_sequence_res *res)
{
struct nfs4_slot_table *tbl;
- if (!nfs4_has_session(clp)) {
- dprintk("%s: No session\n", __func__);
- return;
- }
tbl = &clp->cl_session->fc_slot_table;
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
/* just wake up the next guy waiting since
@@ -407,7 +403,6 @@ static void nfs41_sequence_done(struct nfs_client *clp,
spin_unlock(&clp->cl_lock);
/* Check sequence flags */
nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
- return;
}
out:
/* The session may be reset by one of the error handlers. */
@@ -556,7 +551,6 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
struct nfs41_call_sync_data *data = calldata;
nfs41_sequence_done(data->clp, data->seq_res, task->tk_status);
- nfs41_sequence_free_slot(data->clp, data->seq_res);
}
struct rpc_call_ops nfs41_call_sync_ops = {
@@ -632,12 +626,10 @@ static void nfs4_sequence_done(const struct nfs_server *server,
#endif /* CONFIG_NFS_V4_1 */
}
-void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp,
- struct nfs4_sequence_res *res)
+void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp)
{
#ifdef CONFIG_NFS_V4_1
if (nfs4_has_session(clp)) {
- nfs41_sequence_free_slot(clp, res);
rpc_restart_call_prepare(task);
return;
}
@@ -645,15 +637,6 @@ void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp,
rpc_restart_call(task);
}
-/* no restart, therefore free slot here */
-static void nfs4_sequence_done_free_slot(const struct nfs_server *server,
- struct nfs4_sequence_res *res,
- int rpc_status)
-{
- nfs4_sequence_done(server, res, rpc_status);
- nfs4_sequence_free_slot(server->nfs_client, res);
-}
-
static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
{
struct nfs_inode *nfsi = NFS_I(dir);
@@ -1350,8 +1333,8 @@ static void nfs4_open_done(struct rpc_task *task, void *calldata)
data->rpc_status = task->tk_status;
- nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res,
- task->tk_status);
+ nfs4_sequence_done(data->o_arg.server, &data->o_res.seq_res,
+ task->tk_status);
if (RPC_ASSASSINATED(task))
return;
@@ -1757,12 +1740,10 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
- nfs4_restart_rpc(task, server->nfs_client,
- &calldata->res.seq_res);
+ nfs4_restart_rpc(task, server->nfs_client);
return;
}
}
- nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res);
nfs_refresh_inode(calldata->inode, calldata->res.fattr);
}
@@ -2553,7 +2534,6 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
nfs4_sequence_done(res->server, &res->seq_res, task->tk_status);
if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
return 0;
- nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res);
update_changeattr(dir, &res->cinfo);
nfs_post_op_update_inode(dir, &res->dir_attr);
return 1;
@@ -2992,20 +2972,16 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
dprintk("--> %s\n", __func__);
- /* nfs4_sequence_free_slot called in the read rpc_call_done */
nfs4_sequence_done(server, &data->res.seq_res, task->tk_status);
if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
- nfs4_restart_rpc(task, server->nfs_client, &data->res.seq_res);
+ nfs4_restart_rpc(task, server->nfs_client);
return -EAGAIN;
}
nfs_invalidate_atime(data->inode);
if (task->tk_status > 0)
renew_lease(server, data->timestamp);
- else if (task->tk_status < 0)
- nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
-
return 0;
}
@@ -3019,13 +2995,11 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
struct inode *inode = data->inode;
- /* slot is freed in nfs_writeback_done */
nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
- nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
- &data->res.seq_res);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
if (task->tk_status >= 0) {
@@ -3053,12 +3027,9 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
- nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
- &data->res.seq_res);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
return -EAGAIN;
}
- nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
- &data->res.seq_res);
nfs_refresh_inode(inode, data->res.fattr);
return 0;
}
@@ -3509,8 +3480,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
- nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res,
- task->tk_status);
+ nfs4_sequence_done(data->res.server, &data->res.seq_res,
+ task->tk_status);
data->rpc_status = task->tk_status;
if (data->rpc_status == 0)
@@ -3768,11 +3739,8 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
default:
if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
nfs4_restart_rpc(task,
- calldata->server->nfs_client,
- &calldata->res.seq_res);
+ calldata->server->nfs_client);
}
- nfs4_sequence_free_slot(calldata->server->nfs_client,
- &calldata->res.seq_res);
}
static void nfs4_locku_prepare(struct rpc_task *task, void *data)
@@ -3954,8 +3922,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
dprintk("%s: begin!\n", __func__);
- nfs4_sequence_done_free_slot(data->server, &data->res.seq_res,
- task->tk_status);
+ nfs4_sequence_done(data->server, &data->res.seq_res,
+ task->tk_status);
data->rpc_status = task->tk_status;
if (RPC_ASSASSINATED(task))
@@ -4425,10 +4393,9 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
rpc_delay(task, NFS4_POLL_RETRY_MIN);
task->tk_status = 0;
- rpc_restart_call(task);
+ nfs4_restart_rpc(task, data->clp);
return;
}
- nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);
dprintk("<-- %s\n", __func__);
}
@@ -4912,11 +4879,10 @@ void nfs41_sequence_call_done(struct rpc_task *task, void *data)
if (_nfs4_async_handle_error(task, NULL, clp, NULL)
== -EAGAIN) {
- nfs4_restart_rpc(task, clp, task->tk_msg.rpc_resp);
+ nfs4_restart_rpc(task, clp);
return;
}
}
- nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
kfree(task->tk_msg.rpc_argp);
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 3e04fb9..d319bfb 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -356,26 +356,19 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
struct nfs_readres *resp = &data->res;
if (resp->eof || resp->count == argp->count)
- goto out;
+ return;
/* This is a short read! */
nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
/* Has the server at least made some progress? */
if (resp->count == 0)
- goto out;
+ return;
/* Yes, so retry the read at the end of the data */
argp->offset += resp->count;
argp->pgbase += resp->count;
argp->count -= resp->count;
- nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client,
- &data->res.seq_res);
- return;
-out:
- nfs4_sequence_free_slot(NFS_SERVER(data->inode)->nfs_client,
- &data->res.seq_res);
- return;
-
+ nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
}
/*
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 52f7bdb..012a14c 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -84,8 +84,7 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
struct nfs_removeres *res = task->tk_msg.rpc_resp;
if (!NFS_PROTO(dir)->unlink_done(task, dir))
- nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client,
- &res->seq_res);
+ nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
}
/**
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 556668f..d546c60 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1216,8 +1216,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
*/
argp->stable = NFS_FILE_SYNC;
}
- nfs4_restart_rpc(task, server->nfs_client,
- &data->res.seq_res);
+ nfs4_restart_rpc(task, server->nfs_client);
return -EAGAIN;
}
if (time_before(complain, jiffies)) {
@@ -1229,7 +1228,6 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
/* Can't do anything about it except throw an error. */
task->tk_status = -EIO;
}
- nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
return 0;
}
--
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