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NFSv4: Make locku use the new RPC "wait on completion" interface. 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2006-01-03 09:55:07 +01:00
parent 44c288732f
commit 06f814a3ad
1 changed files with 36 additions and 29 deletions
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65
fs/nfs/nfs4proc.c
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@ -206,6 +206,17 @@ static int nfs4_call_async(struct rpc_clnt *clnt,
return 0;
}
static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
{
sigset_t oldset;
int ret;
rpc_clnt_sigmask(task->tk_client, &oldset);
ret = rpc_wait_for_completion_task(task);
rpc_clnt_sigunmask(task->tk_client, &oldset);
return ret;
}
static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
{
struct inode *inode = state->inode;
@ -2867,31 +2878,23 @@ struct nfs4_unlockdata {
struct nfs_lockres res;
struct nfs4_lock_state *lsp;
struct nfs_open_context *ctx;
atomic_t refcount;
struct completion completion;
};
static void nfs4_locku_release_calldata(struct nfs4_unlockdata *calldata)
{
if (atomic_dec_and_test(&calldata->refcount)) {
nfs_free_seqid(calldata->luargs.seqid);
nfs4_put_lock_state(calldata->lsp);
put_nfs_open_context(calldata->ctx);
kfree(calldata);
}
}
static void nfs4_locku_complete(void *data)
static void nfs4_locku_release_calldata(void *data)
{
struct nfs4_unlockdata *calldata = data;
complete(&calldata->completion);
nfs4_locku_release_calldata(calldata);
nfs_free_seqid(calldata->luargs.seqid);
nfs4_put_lock_state(calldata->lsp);
put_nfs_open_context(calldata->ctx);
kfree(calldata);
}
static void nfs4_locku_done(struct rpc_task *task, void *data)
{
struct nfs4_unlockdata *calldata = data;
if (RPC_ASSASSINATED(task))
return;
nfs_increment_lock_seqid(task->tk_status, calldata->luargs.seqid);
switch (task->tk_status) {
case 0:
@ -2935,7 +2938,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data)
static const struct rpc_call_ops nfs4_locku_ops = {
.rpc_call_prepare = nfs4_locku_prepare,
.rpc_call_done = nfs4_locku_done,
.rpc_release = nfs4_locku_complete,
.rpc_release = nfs4_locku_release_calldata,
};
static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
@ -2944,26 +2947,28 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_lock_state *lsp;
int status;
struct rpc_task *task;
int status = 0;
/* Is this a delegated lock? */
if (test_bit(NFS_DELEGATED_STATE, &state->flags))
return do_vfs_lock(request->fl_file, request);
goto out;
status = nfs4_set_lock_state(state, request);
if (status != 0)
return status;
goto out;
lsp = request->fl_u.nfs4_fl.owner;
/* We might have lost the locks! */
if ((lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0)
return 0;
goto out;
status = -ENOMEM;
calldata = kmalloc(sizeof(*calldata), GFP_KERNEL);
if (calldata == NULL)
return -ENOMEM;
goto out;
calldata->luargs.seqid = nfs_alloc_seqid(&lsp->ls_seqid);
if (calldata->luargs.seqid == NULL) {
kfree(calldata);
return -ENOMEM;
goto out;
}
calldata->luargs.stateid = &lsp->ls_stateid;
calldata->arg.fh = NFS_FH(inode);
@ -2978,14 +2983,16 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
/* Ensure we don't close file until we're done freeing locks! */
calldata->ctx = get_nfs_open_context((struct nfs_open_context*)request->fl_file->private_data);
atomic_set(&calldata->refcount, 2);
init_completion(&calldata->completion);
status = nfs4_call_async(NFS_SERVER(inode)->client, &nfs4_locku_ops, calldata);
if (status == 0)
wait_for_completion_interruptible(&calldata->completion);
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_locku_ops, calldata);
if (!IS_ERR(task)) {
status = nfs4_wait_for_completion_rpc_task(task);
rpc_release_task(task);
} else {
status = PTR_ERR(task);
nfs4_locku_release_calldata(calldata);
}
out:
do_vfs_lock(request->fl_file, request);
nfs4_locku_release_calldata(calldata);
return status;
}