linux/fs/cachefiles/cache.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* Manage high-level VFS aspects of a cache.
 *
 * Copyright (C) 2007, 2021 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#include <linux/slab.h>
#include <linux/statfs.h>
#include <linux/namei.h>
#include <trace/events/fscache.h>
#include "internal.h"

/*
 * Bring a cache online.
 */
int cachefiles_add_cache(struct cachefiles_cache *cache)
{ … }

/*
 * See if we have space for a number of pages and/or a number of files in the
 * cache
 */
int cachefiles_has_space(struct cachefiles_cache *cache,
			 unsigned fnr, unsigned bnr,
			 enum cachefiles_has_space_for reason)
{ … }

/*
 * Mark all the objects as being out of service and queue them all for cleanup.
 */
static void cachefiles_withdraw_objects(struct cachefiles_cache *cache)
{ … }

/*
 * Withdraw fscache volumes.
 */
static void cachefiles_withdraw_fscache_volumes(struct cachefiles_cache *cache)
{ … }

/*
 * Withdraw cachefiles volumes.
 */
static void cachefiles_withdraw_volumes(struct cachefiles_cache *cache)
{ … }

/*
 * Sync a cache to backing disk.
 */
static void cachefiles_sync_cache(struct cachefiles_cache *cache)
{ … }

/*
 * Withdraw cache objects.
 */
void cachefiles_withdraw_cache(struct cachefiles_cache *cache)
{ … }