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authorAndy Adamson <andros@netapp.com>2014-01-29 20:34:38 +0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-01-29 20:54:55 +0400
commitf9c96fcc501a43dbc292b17fc0ded4b54e63b79d (patch)
tree50feb8393e5fa42095511a1417dbe56def085569 /fs
parent4db72b40fdbc706f8957e9773ae73b1574b8c694 (diff)
downloadlinux-f9c96fcc501a43dbc292b17fc0ded4b54e63b79d.tar.xz
NFSv4.1 free slot before resending I/O to MDS
Fix a dynamic session slot leak where a slot is preallocated and I/O is resent through the MDS. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs4_fs.h1
-rw-r--r--fs/nfs/nfs4filelayout.c10
-rw-r--r--fs/nfs/nfs4proc.c3
3 files changed, 11 insertions, 3 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 5609edc742a0..a5b27c2d9689 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -270,6 +270,7 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser
extern int nfs41_setup_sequence(struct nfs4_session *session,
struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
struct rpc_task *task);
+extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *);
extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 03fd8be8c0c5..20a56fa271bd 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -335,8 +335,11 @@ static void filelayout_read_call_done(struct rpc_task *task, void *data)
dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status);
if (test_bit(NFS_IOHDR_REDO, &rdata->header->flags) &&
- task->tk_status == 0)
+ task->tk_status == 0) {
+ if (rdata->res.seq_res.sr_slot != NULL)
+ nfs41_sequence_done(task, &rdata->res.seq_res);
return;
+ }
/* Note this may cause RPC to be resent */
rdata->header->mds_ops->rpc_call_done(task, data);
@@ -442,8 +445,11 @@ static void filelayout_write_call_done(struct rpc_task *task, void *data)
struct nfs_write_data *wdata = data;
if (test_bit(NFS_IOHDR_REDO, &wdata->header->flags) &&
- task->tk_status == 0)
+ task->tk_status == 0) {
+ if (wdata->res.seq_res.sr_slot != NULL)
+ nfs41_sequence_done(task, &wdata->res.seq_res);
return;
+ }
/* Note this may cause RPC to be resent */
wdata->header->mds_ops->rpc_call_done(task, data);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ed10d0d4f860..ae00c3ed733f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -592,7 +592,7 @@ out_unlock:
nfs41_server_notify_highest_slotid_update(session->clp);
}
-static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
+int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
{
struct nfs4_session *session;
struct nfs4_slot *slot;
@@ -692,6 +692,7 @@ out_retry:
rpc_delay(task, NFS4_POLL_RETRY_MAX);
return 0;
}
+EXPORT_SYMBOL_GPL(nfs41_sequence_done);
static int nfs4_sequence_done(struct rpc_task *task,
struct nfs4_sequence_res *res)