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NFSv4: Ensure we reference the inode for return-on-close in delegreturn

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If we have to do a return-on-close in the delegreturn code, then
we must ensure that the inode and super block remain referenced.

Cc: Peng Tao <tao.peng@primarydata.com>
Cc: stable@vger.kernel.org # 3.17.x
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Reviewed-by: Peng Tao <tao.peng@primarydata.com>
This commit is contained in:
Trond Myklebust
2015-02-05 15:13:24 -05:00
parent 6ae373394c
commit ea7c38fef0
3 changed files with 36 additions and 9 deletions
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14
fs/nfs/nfs4proc.c
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@@ -5175,9 +5175,13 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
static void nfs4_delegreturn_release(void *calldata)
{
struct nfs4_delegreturndata *data = calldata;
struct inode *inode = data->inode;
if (data->roc)
pnfs_roc_release(data->inode);
if (inode) {
if (data->roc)
pnfs_roc_release(inode);
nfs_iput_and_deactive(inode);
}
kfree(calldata);
}
@@ -5234,9 +5238,9 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
nfs_fattr_init(data->res.fattr);
data->timestamp = jiffies;
data->rpc_status = 0;
data->inode = inode;
data->roc = list_empty(&NFS_I(inode)->open_files) ?
pnfs_roc(inode) : false;
data->inode = nfs_igrab_and_active(inode);
if (data->inode)
data->roc = nfs4_roc(inode);
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;