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authorAndy Adamson <andros@netapp.com>2009-12-04 15:55:29 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-12-04 15:55:29 -0500
commite608e79f1bf4b967afcf57777e63b5f0939b00e8 (patch)
treed649b5714435b7d2d4edd5779fa22122d61ee0c5 /fs/nfs
parent1d9ddde94aed01c4618cf6f70883cc511c3b2b62 (diff)
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nfs41: call free slot from nfs4_restart_rpc
nfs41_sequence_free_slot can be called multiple times on SEQUENCE operation errors. No reason to inline nfs4_restart_rpc Reported-by: Trond Myklebust <trond.myklebust@netapp.com> nfs_writeback_done and nfs_readpage_retry call nfs4_restart_rpc outside the error handler, and the slot is not freed prior to restarting in the rpc_prepare state during session reset. Fix this by moving the call to nfs41_sequence_free_slot from the error path of nfs41_sequence_done into nfs4_restart_rpc, and by removing the test for NFS4CLNT_SESSION_SETUP. Always free slot and goto the rpc prepare state on async errors. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/internal.h16
-rw-r--r--fs/nfs/nfs4proc.c29
-rw-r--r--fs/nfs/read.c3
-rw-r--r--fs/nfs/unlink.c4
-rw-r--r--fs/nfs/write.c3
5 files changed, 32 insertions, 23 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index ebcd379..a6f7b6c 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -177,26 +177,14 @@ extern __be32 * nfs_decode_dirent(__be32 *, struct nfs_entry *, int);
extern struct rpc_procinfo nfs3_procedures[];
extern __be32 *nfs3_decode_dirent(__be32 *, struct nfs_entry *, int);
-/* nfs4proc.c */
-static inline void nfs4_restart_rpc(struct rpc_task *task,
- const struct nfs_client *clp)
-{
-#ifdef CONFIG_NFS_V4_1
- if (nfs4_has_session(clp) &&
- test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) {
- rpc_restart_call_prepare(task);
- return;
- }
-#endif /* CONFIG_NFS_V4_1 */
- rpc_restart_call(task);
-}
-
/* nfs4xdr.c */
#ifdef CONFIG_NFS_V4
extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus);
#endif
/* nfs4proc.c */
+extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *,
+ struct nfs4_sequence_res *);
#ifdef CONFIG_NFS_V4
extern struct rpc_procinfo nfs4_procedures[];
#endif
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a23110d..6ef50aa 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -644,6 +644,19 @@ 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)
+{
+#ifdef CONFIG_NFS_V4_1
+ if (nfs4_has_session(clp)) {
+ nfs41_sequence_free_slot(clp, res);
+ rpc_restart_call_prepare(task);
+ return;
+ }
+#endif /* CONFIG_NFS_V4_1 */
+ 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,
@@ -1750,7 +1763,8 @@ 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);
+ nfs4_restart_rpc(task, server->nfs_client,
+ &calldata->res.seq_res);
return;
}
}
@@ -2988,7 +3002,7 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
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);
+ nfs4_restart_rpc(task, server->nfs_client, &data->res.seq_res);
return -EAGAIN;
}
@@ -3013,7 +3027,8 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
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);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
+ &data->res.seq_res);
return -EAGAIN;
}
if (task->tk_status >= 0) {
@@ -3041,7 +3056,8 @@ 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);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
+ &data->res.seq_res);
return -EAGAIN;
}
nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
@@ -3755,7 +3771,8 @@ 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->server->nfs_client,
+ &calldata->res.seq_res);
}
nfs4_sequence_free_slot(calldata->server->nfs_client,
&calldata->res.seq_res);
@@ -4890,7 +4907,7 @@ 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);
+ nfs4_restart_rpc(task, clp, task->tk_msg.rpc_resp);
return;
}
}
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 12c9e66..3e04fb9 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -368,7 +368,8 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
argp->offset += resp->count;
argp->pgbase += resp->count;
argp->count -= resp->count;
- nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
+ 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,
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 1064c91..52f7bdb 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -81,9 +81,11 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
{
struct nfs_unlinkdata *data = calldata;
struct inode *dir = data->dir;
+ 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);
+ nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client,
+ &res->seq_res);
}
/**
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 53eb26c..556668f 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1216,7 +1216,8 @@ 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);
+ nfs4_restart_rpc(task, server->nfs_client,
+ &data->res.seq_res);
return -EAGAIN;
}
if (time_before(complain, jiffies)) {