mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
![Heinz Mauelshagen](/assets/img/avatar_default.png)
Discard block size not being equal to cache block size causes data corruption by erroneously avoiding migrations in issue_copy() because the discard state is being cleared for a group of cache blocks when it should not. Completely remove all code that enabled a distinction between the cache block size and discard block size. Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
43 lines
907 B
C
43 lines
907 B
C
/*
|
|
* Copyright (C) 2012 Red Hat, Inc.
|
|
*
|
|
* This file is released under the GPL.
|
|
*/
|
|
|
|
#ifndef DM_CACHE_BLOCK_TYPES_H
|
|
#define DM_CACHE_BLOCK_TYPES_H
|
|
|
|
#include "persistent-data/dm-block-manager.h"
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
/*
|
|
* It's helpful to get sparse to differentiate between indexes into the
|
|
* origin device, indexes into the cache device, and indexes into the
|
|
* discard bitset.
|
|
*/
|
|
|
|
typedef dm_block_t __bitwise__ dm_oblock_t;
|
|
typedef uint32_t __bitwise__ dm_cblock_t;
|
|
|
|
static inline dm_oblock_t to_oblock(dm_block_t b)
|
|
{
|
|
return (__force dm_oblock_t) b;
|
|
}
|
|
|
|
static inline dm_block_t from_oblock(dm_oblock_t b)
|
|
{
|
|
return (__force dm_block_t) b;
|
|
}
|
|
|
|
static inline dm_cblock_t to_cblock(uint32_t b)
|
|
{
|
|
return (__force dm_cblock_t) b;
|
|
}
|
|
|
|
static inline uint32_t from_cblock(dm_cblock_t b)
|
|
{
|
|
return (__force uint32_t) b;
|
|
}
|
|
|
|
#endif /* DM_CACHE_BLOCK_TYPES_H */
|