linux/fs/afs/fs_operation.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* Fileserver-directed operation handling.
 *
 * Copyright (C) 2020 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include "internal.h"

static atomic_t afs_operation_debug_counter;

/*
 * Create an operation against a volume.
 */
struct afs_operation *afs_alloc_operation(struct key *key, struct afs_volume *volume)
{ … }

/*
 * Lock the vnode(s) being operated upon.
 */
static bool afs_get_io_locks(struct afs_operation *op)
{ … }

static void afs_drop_io_locks(struct afs_operation *op)
{ … }

static void afs_prepare_vnode(struct afs_operation *op, struct afs_vnode_param *vp,
			      unsigned int index)
{ … }

/*
 * Begin an operation on the fileserver.
 *
 * Fileserver operations are serialised on the server by vnode, so we serialise
 * them here also using the io_lock.
 */
bool afs_begin_vnode_operation(struct afs_operation *op)
{ … }

/*
 * Tidy up a filesystem cursor and unlock the vnode.
 */
static void afs_end_vnode_operation(struct afs_operation *op)
{ … }

/*
 * Wait for an in-progress operation to complete.
 */
void afs_wait_for_operation(struct afs_operation *op)
{ … }

/*
 * Dispose of an operation.
 */
int afs_put_operation(struct afs_operation *op)
{ … }

int afs_do_sync_operation(struct afs_operation *op)
{ … }