From f9c96fcc501a43dbc292b17fc0ded4b54e63b79d Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Wed, 29 Jan 2014 11:34:38 -0500 Subject: [PATCH] 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 Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4filelayout.c | 10 ++++++++-- fs/nfs/nfs4proc.c | 3 ++- 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) -- 2.39.5