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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BTREE_UPDATE_H
#define _BCACHEFS_BTREE_UPDATE_H
#include "btree_iter.h"
#include "journal.h"
struct bch_fs;
struct btree;
void bch2_btree_node_prep_for_write(struct btree_trans *,
struct btree_path *, struct btree *);
bool bch2_btree_bset_insert_key(struct btree_trans *, struct btree_path *,
struct btree *, struct btree_node_iter *,
struct bkey_i *);
void bch2_btree_add_journal_pin(struct bch_fs *, struct btree *, u64);
void bch2_btree_insert_key_leaf(struct btree_trans *, struct btree_path *,
struct bkey_i *, u64);
enum btree_insert_flags {
/* First two bits for journal watermark: */
__BTREE_INSERT_NOFAIL = 2,
__BTREE_INSERT_NOCHECK_RW,
__BTREE_INSERT_LAZY_RW,
__BTREE_INSERT_USE_RESERVE,
__BTREE_INSERT_JOURNAL_REPLAY,
__BTREE_INSERT_JOURNAL_RECLAIM,
__BTREE_INSERT_NOWAIT,
__BTREE_INSERT_GC_LOCK_HELD,
__BCH_HASH_SET_MUST_CREATE,
__BCH_HASH_SET_MUST_REPLACE,
};
/* Don't check for -ENOSPC: */
#define BTREE_INSERT_NOFAIL (1 << __BTREE_INSERT_NOFAIL)
#define BTREE_INSERT_NOCHECK_RW (1 << __BTREE_INSERT_NOCHECK_RW)
#define BTREE_INSERT_LAZY_RW (1 << __BTREE_INSERT_LAZY_RW)
/* for copygc, or when merging btree nodes */
#define BTREE_INSERT_USE_RESERVE (1 << __BTREE_INSERT_USE_RESERVE)
/* Insert is for journal replay - don't get journal reservations: */
#define BTREE_INSERT_JOURNAL_REPLAY (1 << __BTREE_INSERT_JOURNAL_REPLAY)
/* Insert is being called from journal reclaim path: */
#define BTREE_INSERT_JOURNAL_RECLAIM (1 << __BTREE_INSERT_JOURNAL_RECLAIM)
/* Don't block on allocation failure (for new btree nodes: */
#define BTREE_INSERT_NOWAIT (1 << __BTREE_INSERT_NOWAIT)
#define BTREE_INSERT_GC_LOCK_HELD (1 << __BTREE_INSERT_GC_LOCK_HELD)
#define BCH_HASH_SET_MUST_CREATE (1 << __BCH_HASH_SET_MUST_CREATE)
#define BCH_HASH_SET_MUST_REPLACE (1 << __BCH_HASH_SET_MUST_REPLACE)
int bch2_btree_delete_extent_at(struct btree_trans *, struct btree_iter *,
unsigned, unsigned);
int bch2_btree_delete_at(struct btree_trans *, struct btree_iter *, unsigned);
int bch2_btree_insert_nonextent(struct btree_trans *, enum btree_id,
struct bkey_i *, enum btree_update_flags);
int __bch2_btree_insert(struct btree_trans *, enum btree_id, struct bkey_i *,
enum btree_update_flags);
int bch2_btree_insert(struct bch_fs *, enum btree_id, struct bkey_i *,
struct disk_reservation *, u64 *, int flags);
int bch2_btree_delete_range_trans(struct btree_trans *, enum btree_id,
struct bpos, struct bpos, unsigned, u64 *);
int bch2_btree_delete_range(struct bch_fs *, enum btree_id,
struct bpos, struct bpos, unsigned, u64 *);
int bch2_btree_node_rewrite(struct btree_trans *, struct btree_iter *,
struct btree *, unsigned);
void bch2_btree_node_rewrite_async(struct bch_fs *, struct btree *);
int bch2_btree_node_update_key(struct btree_trans *, struct btree_iter *,
struct btree *, struct bkey_i *, bool);
int bch2_btree_node_update_key_get_iter(struct btree_trans *,
struct btree *, struct bkey_i *, bool);
int bch2_trans_update_extent(struct btree_trans *, struct btree_iter *,
struct bkey_i *, enum btree_update_flags);
int __must_check bch2_trans_update(struct btree_trans *, struct btree_iter *,
struct bkey_i *, enum btree_update_flags);
int __must_check bch2_trans_update_buffered(struct btree_trans *,
enum btree_id, struct bkey_i *);
void bch2_trans_commit_hook(struct btree_trans *,
struct btree_trans_commit_hook *);
int __bch2_trans_commit(struct btree_trans *, unsigned);
int bch2_trans_log_msg(struct btree_trans *, const char *, ...);
int bch2_fs_log_msg(struct bch_fs *, const char *, ...);
/**
* bch2_trans_commit - insert keys at given iterator positions
*
* This is main entry point for btree updates.
*
* Return values:
* -EROFS: filesystem read only
* -EIO: journal or btree node IO error
*/
static inline int bch2_trans_commit(struct btree_trans *trans,
struct disk_reservation *disk_res,
u64 *journal_seq,
unsigned flags)
{
trans->disk_res = disk_res;
trans->journal_seq = journal_seq;
return __bch2_trans_commit(trans, flags);
}
#define commit_do(_trans, _disk_res, _journal_seq, _flags, _do) \
lockrestart_do(_trans, _do ?: bch2_trans_commit(_trans, (_disk_res),\
(_journal_seq), (_flags)))
#define nested_commit_do(_trans, _disk_res, _journal_seq, _flags, _do) \
nested_lockrestart_do(_trans, _do ?: bch2_trans_commit(_trans, (_disk_res),\
(_journal_seq), (_flags)))
#define bch2_trans_do(_c, _disk_res, _journal_seq, _flags, _do) \
({ \
struct btree_trans trans; \
int _ret; \
\
bch2_trans_init(&trans, (_c), 0, 0); \
_ret = commit_do(&trans, _disk_res, _journal_seq, _flags, _do); \
bch2_trans_exit(&trans); \
\
_ret; \
})
#define bch2_trans_run(_c, _do) \
({ \
struct btree_trans trans; \
int _ret; \
\
bch2_trans_init(&trans, (_c), 0, 0); \
_ret = (_do); \
bch2_trans_exit(&trans); \
\
_ret; \
})
#define trans_for_each_update(_trans, _i) \
for ((_i) = (_trans)->updates; \
(_i) < (_trans)->updates + (_trans)->nr_updates; \
(_i)++)
#define trans_for_each_wb_update(_trans, _i) \
for ((_i) = (_trans)->wb_updates; \
(_i) < (_trans)->wb_updates + (_trans)->nr_wb_updates; \
(_i)++)
static inline void bch2_trans_reset_updates(struct btree_trans *trans)
{
struct btree_insert_entry *i;
trans_for_each_update(trans, i)
bch2_path_put(trans, i->path, true);
trans->extra_journal_res = 0;
trans->nr_updates = 0;
trans->nr_wb_updates = 0;
trans->wb_updates = NULL;
trans->hooks = NULL;
trans->extra_journal_entries.nr = 0;
if (trans->fs_usage_deltas) {
trans->fs_usage_deltas->used = 0;
memset((void *) trans->fs_usage_deltas +
offsetof(struct replicas_delta_list, memset_start), 0,
(void *) &trans->fs_usage_deltas->memset_end -
(void *) &trans->fs_usage_deltas->memset_start);
}
}
#endif /* _BCACHEFS_BTREE_UPDATE_H */
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