diff options
Diffstat (limited to 'c_src/libbcachefs/btree_write_buffer.h')
-rw-r--r-- | c_src/libbcachefs/btree_write_buffer.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/c_src/libbcachefs/btree_write_buffer.h b/c_src/libbcachefs/btree_write_buffer.h new file mode 100644 index 00000000..eebcd2b1 --- /dev/null +++ b/c_src/libbcachefs/btree_write_buffer.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_BTREE_WRITE_BUFFER_H +#define _BCACHEFS_BTREE_WRITE_BUFFER_H + +#include "bkey.h" + +static inline bool bch2_btree_write_buffer_should_flush(struct bch_fs *c) +{ + struct btree_write_buffer *wb = &c->btree_write_buffer; + + return wb->inc.keys.nr + wb->flushing.keys.nr > wb->inc.keys.size / 4; +} + +static inline bool bch2_btree_write_buffer_must_wait(struct bch_fs *c) +{ + struct btree_write_buffer *wb = &c->btree_write_buffer; + + return wb->inc.keys.nr > wb->inc.keys.size * 3 / 4; +} + +struct btree_trans; +int bch2_btree_write_buffer_flush_sync(struct btree_trans *); +int bch2_btree_write_buffer_flush_nocheck_rw(struct btree_trans *); +int bch2_btree_write_buffer_tryflush(struct btree_trans *); + +struct journal_keys_to_wb { + struct btree_write_buffer_keys *wb; + size_t room; + u64 seq; +}; + +int bch2_journal_key_to_wb_slowpath(struct bch_fs *, + struct journal_keys_to_wb *, + enum btree_id, struct bkey_i *); + +static inline int bch2_journal_key_to_wb(struct bch_fs *c, + struct journal_keys_to_wb *dst, + enum btree_id btree, struct bkey_i *k) +{ + EBUG_ON(!dst->seq); + + if (unlikely(!dst->room)) + return bch2_journal_key_to_wb_slowpath(c, dst, btree, k); + + struct btree_write_buffered_key *wb_k = &darray_top(dst->wb->keys); + wb_k->journal_seq = dst->seq; + wb_k->btree = btree; + bkey_copy(&wb_k->k, k); + dst->wb->keys.nr++; + dst->room--; + return 0; +} + +void bch2_journal_keys_to_write_buffer_start(struct bch_fs *, struct journal_keys_to_wb *, u64); +void bch2_journal_keys_to_write_buffer_end(struct bch_fs *, struct journal_keys_to_wb *); + +int bch2_btree_write_buffer_resize(struct bch_fs *, size_t); +void bch2_fs_btree_write_buffer_exit(struct bch_fs *); +int bch2_fs_btree_write_buffer_init(struct bch_fs *); + +#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_H */ |