bcachefs.h (63508b756443cb38e432dea01fec36248cb25cd7) bcachefs.h (2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0)
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_H
3#define _BCACHEFS_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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259#define bch2_fmt_inum(_c, _inum, fmt) "inum %llu: " fmt "\n", (_inum)
260#define bch2_fmt_inum_offset(_c, _inum, _offset, fmt) \
261 "inum %llu offset %llu: " fmt "\n", (_inum), (_offset)
262
263#endif
264
265#define bch2_fmt(_c, fmt) bch2_log_msg(_c, fmt "\n")
266
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_H
3#define _BCACHEFS_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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259#define bch2_fmt_inum(_c, _inum, fmt) "inum %llu: " fmt "\n", (_inum)
260#define bch2_fmt_inum_offset(_c, _inum, _offset, fmt) \
261 "inum %llu offset %llu: " fmt "\n", (_inum), (_offset)
262
263#endif
264
265#define bch2_fmt(_c, fmt) bch2_log_msg(_c, fmt "\n")
266
267__printf(2, 3)
268void __bch2_print(struct bch_fs *c, const char *fmt, ...);
269
270#define maybe_dev_to_fs(_c) _Generic((_c), \
271 struct bch_dev *: ((struct bch_dev *) (_c))->fs, \
272 struct bch_fs *: (_c))
273
274#define bch2_print(_c, ...) __bch2_print(maybe_dev_to_fs(_c), __VA_ARGS__)
275
276#define bch2_print_ratelimited(_c, ...) \
277do { \
278 static DEFINE_RATELIMIT_STATE(_rs, \
279 DEFAULT_RATELIMIT_INTERVAL, \
280 DEFAULT_RATELIMIT_BURST); \
281 \
282 if (__ratelimit(&_rs)) \
283 bch2_print(_c, __VA_ARGS__); \
284} while (0)
285
267#define bch_info(c, fmt, ...) \
286#define bch_info(c, fmt, ...) \
268 printk(KERN_INFO bch2_fmt(c, fmt), ##__VA_ARGS__)
287 bch2_print(c, KERN_INFO bch2_fmt(c, fmt), ##__VA_ARGS__)
269#define bch_notice(c, fmt, ...) \
288#define bch_notice(c, fmt, ...) \
270 printk(KERN_NOTICE bch2_fmt(c, fmt), ##__VA_ARGS__)
289 bch2_print(c, KERN_NOTICE bch2_fmt(c, fmt), ##__VA_ARGS__)
271#define bch_warn(c, fmt, ...) \
290#define bch_warn(c, fmt, ...) \
272 printk(KERN_WARNING bch2_fmt(c, fmt), ##__VA_ARGS__)
291 bch2_print(c, KERN_WARNING bch2_fmt(c, fmt), ##__VA_ARGS__)
273#define bch_warn_ratelimited(c, fmt, ...) \
292#define bch_warn_ratelimited(c, fmt, ...) \
274 printk_ratelimited(KERN_WARNING bch2_fmt(c, fmt), ##__VA_ARGS__)
293 bch2_print_ratelimited(c, KERN_WARNING bch2_fmt(c, fmt), ##__VA_ARGS__)
275
276#define bch_err(c, fmt, ...) \
294
295#define bch_err(c, fmt, ...) \
277 printk(KERN_ERR bch2_fmt(c, fmt), ##__VA_ARGS__)
296 bch2_print(c, KERN_ERR bch2_fmt(c, fmt), ##__VA_ARGS__)
278#define bch_err_dev(ca, fmt, ...) \
297#define bch_err_dev(ca, fmt, ...) \
279 printk(KERN_ERR bch2_fmt_dev(ca, fmt), ##__VA_ARGS__)
298 bch2_print(c, KERN_ERR bch2_fmt_dev(ca, fmt), ##__VA_ARGS__)
280#define bch_err_dev_offset(ca, _offset, fmt, ...) \
299#define bch_err_dev_offset(ca, _offset, fmt, ...) \
281 printk(KERN_ERR bch2_fmt_dev_offset(ca, _offset, fmt), ##__VA_ARGS__)
300 bch2_print(c, KERN_ERR bch2_fmt_dev_offset(ca, _offset, fmt), ##__VA_ARGS__)
282#define bch_err_inum(c, _inum, fmt, ...) \
301#define bch_err_inum(c, _inum, fmt, ...) \
283 printk(KERN_ERR bch2_fmt_inum(c, _inum, fmt), ##__VA_ARGS__)
302 bch2_print(c, KERN_ERR bch2_fmt_inum(c, _inum, fmt), ##__VA_ARGS__)
284#define bch_err_inum_offset(c, _inum, _offset, fmt, ...) \
303#define bch_err_inum_offset(c, _inum, _offset, fmt, ...) \
285 printk(KERN_ERR bch2_fmt_inum_offset(c, _inum, _offset, fmt), ##__VA_ARGS__)
304 bch2_print(c, KERN_ERR bch2_fmt_inum_offset(c, _inum, _offset, fmt), ##__VA_ARGS__)
286
287#define bch_err_ratelimited(c, fmt, ...) \
305
306#define bch_err_ratelimited(c, fmt, ...) \
288 printk_ratelimited(KERN_ERR bch2_fmt(c, fmt), ##__VA_ARGS__)
307 bch2_print_ratelimited(c, KERN_ERR bch2_fmt(c, fmt), ##__VA_ARGS__)
289#define bch_err_dev_ratelimited(ca, fmt, ...) \
308#define bch_err_dev_ratelimited(ca, fmt, ...) \
290 printk_ratelimited(KERN_ERR bch2_fmt_dev(ca, fmt), ##__VA_ARGS__)
309 bch2_print_ratelimited(ca, KERN_ERR bch2_fmt_dev(ca, fmt), ##__VA_ARGS__)
291#define bch_err_dev_offset_ratelimited(ca, _offset, fmt, ...) \
310#define bch_err_dev_offset_ratelimited(ca, _offset, fmt, ...) \
292 printk_ratelimited(KERN_ERR bch2_fmt_dev_offset(ca, _offset, fmt), ##__VA_ARGS__)
311 bch2_print_ratelimited(ca, KERN_ERR bch2_fmt_dev_offset(ca, _offset, fmt), ##__VA_ARGS__)
293#define bch_err_inum_ratelimited(c, _inum, fmt, ...) \
312#define bch_err_inum_ratelimited(c, _inum, fmt, ...) \
294 printk_ratelimited(KERN_ERR bch2_fmt_inum(c, _inum, fmt), ##__VA_ARGS__)
313 bch2_print_ratelimited(c, KERN_ERR bch2_fmt_inum(c, _inum, fmt), ##__VA_ARGS__)
295#define bch_err_inum_offset_ratelimited(c, _inum, _offset, fmt, ...) \
314#define bch_err_inum_offset_ratelimited(c, _inum, _offset, fmt, ...) \
296 printk_ratelimited(KERN_ERR bch2_fmt_inum_offset(c, _inum, _offset, fmt), ##__VA_ARGS__)
315 bch2_print_ratelimited(c, KERN_ERR bch2_fmt_inum_offset(c, _inum, _offset, fmt), ##__VA_ARGS__)
297
298#define bch_err_fn(_c, _ret) \
299do { \
300 if (_ret && !bch2_err_matches(_ret, BCH_ERR_transaction_restart))\
301 bch_err(_c, "%s(): error %s", __func__, bch2_err_str(_ret));\
302} while (0)
303
304#define bch_err_msg(_c, _ret, _msg, ...) \

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441
442/* Size of the freelist we allocate btree nodes from: */
443#define BTREE_NODE_RESERVE (BTREE_RESERVE_MAX * 4)
444
445#define BTREE_NODE_OPEN_BUCKET_RESERVE (BTREE_RESERVE_MAX * BCH_REPLICAS_MAX)
446
447struct btree;
448
316
317#define bch_err_fn(_c, _ret) \
318do { \
319 if (_ret && !bch2_err_matches(_ret, BCH_ERR_transaction_restart))\
320 bch_err(_c, "%s(): error %s", __func__, bch2_err_str(_ret));\
321} while (0)
322
323#define bch_err_msg(_c, _ret, _msg, ...) \

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460
461/* Size of the freelist we allocate btree nodes from: */
462#define BTREE_NODE_RESERVE (BTREE_RESERVE_MAX * 4)
463
464#define BTREE_NODE_OPEN_BUCKET_RESERVE (BTREE_RESERVE_MAX * BCH_REPLICAS_MAX)
465
466struct btree;
467
468struct log_output {
469 spinlock_t lock;
470 wait_queue_head_t wait;
471 struct printbuf buf;
472};
473
449enum gc_phase {
450 GC_PHASE_NOT_RUNNING,
451 GC_PHASE_START,
452 GC_PHASE_SB,
453
454 GC_PHASE_BTREE_stripes,
455 GC_PHASE_BTREE_extents,
456 GC_PHASE_BTREE_inodes,

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695 struct kobject time_stats;
696 unsigned long flags;
697
698 int minor;
699 struct device *chardev;
700 struct super_block *vfs_sb;
701 dev_t dev;
702 char name[40];
474enum gc_phase {
475 GC_PHASE_NOT_RUNNING,
476 GC_PHASE_START,
477 GC_PHASE_SB,
478
479 GC_PHASE_BTREE_stripes,
480 GC_PHASE_BTREE_extents,
481 GC_PHASE_BTREE_inodes,

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720 struct kobject time_stats;
721 unsigned long flags;
722
723 int minor;
724 struct device *chardev;
725 struct super_block *vfs_sb;
726 dev_t dev;
727 char name[40];
728 struct log_output *output;
729 struct task_struct *output_filter;
703
704 /* ro/rw, add/remove/resize devices: */
705 struct rw_semaphore state_lock;
706
707 /* Counts outstanding writes, for clean transition to read-only */
708#ifdef BCH_WRITE_REF_DEBUG
709 atomic_long_t writes[BCH_WRITE_REF_NR];
710#else

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731 /* ro/rw, add/remove/resize devices: */
732 struct rw_semaphore state_lock;
733
734 /* Counts outstanding writes, for clean transition to read-only */
735#ifdef BCH_WRITE_REF_DEBUG
736 atomic_long_t writes[BCH_WRITE_REF_NR];
737#else

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