e68914ca84
Better/more descriptive naming, and prep for adding nested_lockrestart_do() and nested_commit_do(). Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
156 lines
4.9 KiB
C
156 lines
4.9 KiB
C
/* 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_lock_for_insert(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);
|
|
|
|
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(struct btree_trans *, enum btree_id, struct bkey_i *);
|
|
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);
|
|
|
|
void bch2_trans_commit_hook(struct btree_trans *,
|
|
struct btree_trans_commit_hook *);
|
|
int __bch2_trans_commit(struct btree_trans *);
|
|
|
|
int bch2_trans_log_msg(struct btree_trans *, const char *);
|
|
|
|
/**
|
|
* bch2_trans_commit - insert keys at given iterator positions
|
|
*
|
|
* This is main entry point for btree updates.
|
|
*
|
|
* Return values:
|
|
* -EINTR: locking changed, this function should be called again.
|
|
* -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;
|
|
trans->flags = flags;
|
|
|
|
return __bch2_trans_commit(trans);
|
|
}
|
|
|
|
#define lockrestart_do(_trans, _do) \
|
|
({ \
|
|
int _ret; \
|
|
\
|
|
do { \
|
|
bch2_trans_begin(_trans); \
|
|
_ret = (_do); \
|
|
} while (_ret == -EINTR); \
|
|
\
|
|
_ret; \
|
|
})
|
|
|
|
#define commit_do(_trans, _disk_res, _journal_seq, _flags, _do) \
|
|
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 trans_for_each_update(_trans, _i) \
|
|
for ((_i) = (_trans)->updates; \
|
|
(_i) < (_trans)->updates + (_trans)->nr_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->hooks = NULL;
|
|
trans->extra_journal_entries.nr = 0;
|
|
}
|
|
|
|
#endif /* _BCACHEFS_BTREE_UPDATE_H */
|