NFSv4: Clean up the OPEN/CLOSE serialisation code

[linux-2.6-block.git] / fs / nfs / nfs4proc.c

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9e2e1c7291dbfd5959ba53389351f72c233629b8..a51a7537f3f6e174a86ab753d968ab144c947f94 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3331,15 +3331,12 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
 
        p->arg.fh = NFS_FH(inode);
        p->arg.fl = &p->fl;
-       if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
-               p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
-               if (p->arg.open_seqid == NULL)
-                       goto out_free;
-
-       }
+       p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
+       if (p->arg.open_seqid == NULL)
+               goto out_free;
        p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
        if (p->arg.lock_seqid == NULL)
-               goto out_free;
+               goto out_free_seqid;
        p->arg.lock_stateid = &lsp->ls_stateid;
        p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
        p->arg.lock_owner.id = lsp->ls_id.id;
@@ -3348,9 +3345,9 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
        p->ctx = get_nfs_open_context(ctx);
        memcpy(&p->fl, fl, sizeof(p->fl));
        return p;
+out_free_seqid:
+       nfs_free_seqid(p->arg.open_seqid);
 out_free:
-       if (p->arg.open_seqid != NULL)
-               nfs_free_seqid(p->arg.open_seqid);
        kfree(p);
        return NULL;
 }
@@ -3368,20 +3365,16 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
        };
 
        dprintk("%s: begin!\n", __FUNCTION__);
+       if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
+               return;
        /* Do we need to do an open_to_lock_owner? */
        if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
                if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
                        return;
                data->arg.open_stateid = &state->stateid;
                data->arg.new_lock_owner = 1;
-               /* Retest in case we raced... */
-               if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED))
-                       goto do_rpc;
-       }
-       if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
-               return;
-       data->arg.new_lock_owner = 0;
-do_rpc:        
+       } else
+               data->arg.new_lock_owner = 0;
        data->timestamp = jiffies;
        rpc_call_setup(task, &msg, 0);
        dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status);
@@ -3419,6 +3412,7 @@ static void nfs4_lock_release(void *calldata)
        struct nfs4_lockdata *data = calldata;
 
        dprintk("%s: begin!\n", __FUNCTION__);
+       nfs_free_seqid(data->arg.open_seqid);
        if (data->cancelled != 0) {
                struct rpc_task *task;
                task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
@@ -3428,8 +3422,6 @@ static void nfs4_lock_release(void *calldata)
                dprintk("%s: cancelling lock!\n", __FUNCTION__);
        } else
                nfs_free_seqid(data->arg.lock_seqid);
-       if (data->arg.open_seqid != NULL)
-               nfs_free_seqid(data->arg.open_seqid);
        nfs4_put_lock_state(data->lsp);
        put_nfs_open_context(data->ctx);
        kfree(data);