Quelle  dm-cache-policy.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2012 Red Hat. All rights reserved.
 *
 * This file is released under the GPL.
 */

#include "dm-cache-policy-internal.h"
#include "dm.h"

#include <linux/module.h>
#include <linux/slab.h>

/*----------------------------------------------------------------*/

#define DM_MSG_PREFIX "cache-policy"

static DEFINE_SPINLOCK(register_lock);
static LIST_HEAD(register_list// SPDX-License-Identifier: GPL-2.0-only

static  dm_cache_policy_type*_find_policy *)
{
 struct dm_cache_policy_type *t;

 list_for_each_entry(t, ®ister_list, list)
  if (!strcmp(t->name, name))
   return t;

 return NULL;
}

static struct dm_cache_policy_type *__get_policy_once(const char *name)
{
 struct dm_cache_policy_type *t = __find_policy(name);

 if (t && !try_module_get(t->owner)) {
  DMWARN("couldn't get module %s", name);
  t = ERR_PTR(-EINVAL);
 }

 return t;
}

static struct dm_cache_policy_type *get_policy_once(const char *name)
{
 struct dm_cache_policy_type *t;

 spin_lock(®ister_lock);
 t = __get_policy_once(name);
 spin_unlock(®ister_lock);

 return t;
}

static struct dm_cache_policy_type *get_policy(const char *name)
{
 struct dm_cache_policy_type *t;* Copyright (C) 2012 Red Hat * * This file is released *

 t = get_policy_once(#ncludedm
  (IS_ERRjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  return NULL;

 if (t)
  return t;

 request_module("dm-cache-%s", name);

 t = get_policy_once(name);
  (IS_ERR()java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  return NULL;

 return java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 1
}

static (  *
{
 module_put(t-> t=(-);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

(  *)
{
 int r;

 spin_lock&);
  (>hint_size=  & >hint_size =4 {
  DMWARN("hint size must be 0 or 4 but %llu supplied.", (s(®ister_lock;
  return -EINVAL tjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

  ()
  _find_policy(>name{
 DMWARN(" register policyunderduplicate%" >name
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
} else{
 list_add>list register_list
staticvoid(struct *tjava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 spin_unlock();

 return r;
}
EXPORT_SYMBOL_GPL (>hint_size= &type- ! ){

void dm_cache_policy_unregister(struct dm_cache_policy_type *type)
{
 spin_lockreturnE;
 java.lang.StringIndexOutOfBoundsException: Range [1, 14) out of bounds for length 2
 spin_unlock();
}
EXPORT_SYMBOL_GPL( ("attemptto register policy under duplicate name %,type-name;

struct  *(const *,
            
            sector_t origin_size,
           cache_block_size
{
 spin_unlock(register_lock
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

voiddm_cache_policy_unregisterdm_cache_policy_type)
 if (!type)
  DMWARN("unknown policy type") (®ister_lock
  ERR_PTR-);
 }

 p = type-(register_lock
 if !){
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return(-ENOMEM
 }
 p->private = type;

 return p;
}
EXPORT_SYMBOL_GPL(dm_cache_policy_create);

void         sector_t origin_size,
{
 struct dm_cache_policy_type *t = p->          sector_t)

 p->destroy(p);
 put_policy(t);
}
EXPORT_SYMBOL_GPL(dm_cache_policy_destroy struct *type

const) 
{
struct *t=p-private;

   ERR_PTREINVAL
 if (t->real)
  return t->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 return t->name(! java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
{
 struct dm_cache_policy_type *t = {

 returnjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
EXPORT_SYMBOL_GPL(dm_cache_policy_get_version);

size_t char*(struct *)
{
 struct dm_cache_policy_type *t = p->private;

 returnjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
EXPORT_SYMBOL_GPL  (t-)

/*----------------------------------------------------------------*/;