bcache.h (53f071e19d566e7d0a4eada1bd8313a4cdb660a4) bcache.h (6e916a7eb1bc045f4e27355632ee7692014e6e60)
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHE_H
3#define _BCACHE_H
4
5/*
6 * SOME HIGH LEVEL CODE DOCUMENTATION:
7 *
8 * Bcache mostly works with cache sets, cache devices, and backing devices.

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387 unsigned writeback_rate_i_term_inverse;
388 unsigned writeback_rate_p_term_inverse;
389 unsigned writeback_rate_minimum;
390
391 enum stop_on_failure stop_when_cache_set_failed;
392#define DEFAULT_CACHED_DEV_ERROR_LIMIT 64
393 atomic_t io_errors;
394 unsigned error_limit;
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHE_H
3#define _BCACHE_H
4
5/*
6 * SOME HIGH LEVEL CODE DOCUMENTATION:
7 *
8 * Bcache mostly works with cache sets, cache devices, and backing devices.

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387 unsigned writeback_rate_i_term_inverse;
388 unsigned writeback_rate_p_term_inverse;
389 unsigned writeback_rate_minimum;
390
391 enum stop_on_failure stop_when_cache_set_failed;
392#define DEFAULT_CACHED_DEV_ERROR_LIMIT 64
393 atomic_t io_errors;
394 unsigned error_limit;
395
396 char backing_dev_name[BDEVNAME_SIZE];
395};
396
397enum alloc_reserve {
398 RESERVE_BTREE,
399 RESERVE_PRIO,
400 RESERVE_MOVINGGC,
401 RESERVE_NONE,
402 RESERVE_NR,

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459 /* The rest of this all shows up in sysfs */
460#define IO_ERROR_SHIFT 20
461 atomic_t io_errors;
462 atomic_t io_count;
463
464 atomic_long_t meta_sectors_written;
465 atomic_long_t btree_sectors_written;
466 atomic_long_t sectors_written;
397};
398
399enum alloc_reserve {
400 RESERVE_BTREE,
401 RESERVE_PRIO,
402 RESERVE_MOVINGGC,
403 RESERVE_NONE,
404 RESERVE_NR,

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461 /* The rest of this all shows up in sysfs */
462#define IO_ERROR_SHIFT 20
463 atomic_t io_errors;
464 atomic_t io_count;
465
466 atomic_long_t meta_sectors_written;
467 atomic_long_t btree_sectors_written;
468 atomic_long_t sectors_written;
469
470 char cache_dev_name[BDEVNAME_SIZE];
467};
468
469struct gc_stat {
470 size_t nodes;
471 size_t key_bytes;
472
473 size_t nkeys;
474 uint64_t data; /* sectors */

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472
473struct gc_stat {
474 size_t nodes;
475 size_t key_bytes;
476
477 size_t nkeys;
478 uint64_t data; /* sectors */

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