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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-02-05 16:35:16 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-02-05 22:16:45 -0500
commit5a0ec8acb945e302ce819b4a9787796ccf284548 (patch)
treeda14a82a655160b85440bc6981b91e25f9303299 /fs
parent472e259449819d939b5a5188b6f4c7d59aa4304c (diff)
downloadlinux-5a0ec8acb945e302ce819b4a9787796ccf284548.tar.bz2
NFSv4.1: Pin the inode and super block in asynchronous layoutreturns
If we're sending an asynchronous layoutreturn, then we need to ensure that the inode and the super block remain pinned. Cc: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Reviewed-by: Peng Tao <tao.peng@primarydata.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs4proc.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e092b8540e2e..2e7c9f7a6f7c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7856,6 +7856,7 @@ static void nfs4_layoutreturn_release(void *calldata)
lo->plh_block_lgets--;
spin_unlock(&lo->plh_inode->i_lock);
pnfs_put_layout_hdr(lrp->args.layout);
+ nfs_iput_and_deactive(lrp->inode);
kfree(calldata);
dprintk("<-- %s\n", __func__);
}
@@ -7880,23 +7881,25 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutreturn_call_ops,
.callback_data = lrp,
- .flags = RPC_TASK_ASYNC,
};
int status = 0;
dprintk("--> %s\n", __func__);
+ if (!sync) {
+ lrp->inode = nfs_igrab_and_active(lrp->args.inode);
+ if (!lrp->inode) {
+ nfs4_layoutreturn_release(lrp);
+ return -EAGAIN;
+ }
+ task_setup_data.flags |= RPC_TASK_ASYNC;
+ }
nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
- if (sync == false)
- goto out;
- status = nfs4_wait_for_completion_rpc_task(task);
- if (status != 0)
- goto out;
- status = task->tk_status;
+ if (sync)
+ status = task->tk_status;
trace_nfs4_layoutreturn(lrp->args.inode, status);
-out:
dprintk("<-- %s status=%d\n", __func__, status);
rpc_put_task(task);
return status;