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92e1c29ae8
Add a new helper for checking references to write buffer btrees, where we need a flush before we definitively know we have an inconsistency. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_BTREE_WRITE_BUFFER_H
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#define _BCACHEFS_BTREE_WRITE_BUFFER_H
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#include "bkey.h"
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static inline bool bch2_btree_write_buffer_should_flush(struct bch_fs *c)
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{
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struct btree_write_buffer *wb = &c->btree_write_buffer;
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return wb->inc.keys.nr + wb->flushing.keys.nr > wb->inc.keys.size / 4;
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}
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static inline bool bch2_btree_write_buffer_must_wait(struct bch_fs *c)
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{
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struct btree_write_buffer *wb = &c->btree_write_buffer;
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return wb->inc.keys.nr > wb->inc.keys.size * 3 / 4;
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}
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struct btree_trans;
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int bch2_btree_write_buffer_flush_sync(struct btree_trans *);
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int bch2_btree_write_buffer_flush_nocheck_rw(struct btree_trans *);
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int bch2_btree_write_buffer_tryflush(struct btree_trans *);
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struct bkey_buf;
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int bch2_btree_write_buffer_maybe_flush(struct btree_trans *, struct bkey_s_c, struct bkey_buf *);
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struct journal_keys_to_wb {
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struct btree_write_buffer_keys *wb;
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size_t room;
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u64 seq;
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};
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int bch2_journal_key_to_wb_slowpath(struct bch_fs *,
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struct journal_keys_to_wb *,
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enum btree_id, struct bkey_i *);
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static inline int bch2_journal_key_to_wb(struct bch_fs *c,
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struct journal_keys_to_wb *dst,
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enum btree_id btree, struct bkey_i *k)
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{
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EBUG_ON(!dst->seq);
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if (unlikely(!dst->room))
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return bch2_journal_key_to_wb_slowpath(c, dst, btree, k);
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struct btree_write_buffered_key *wb_k = &darray_top(dst->wb->keys);
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wb_k->journal_seq = dst->seq;
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wb_k->btree = btree;
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bkey_copy(&wb_k->k, k);
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dst->wb->keys.nr++;
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dst->room--;
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return 0;
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}
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void bch2_journal_keys_to_write_buffer_start(struct bch_fs *, struct journal_keys_to_wb *, u64);
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void bch2_journal_keys_to_write_buffer_end(struct bch_fs *, struct journal_keys_to_wb *);
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int bch2_btree_write_buffer_resize(struct bch_fs *, size_t);
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void bch2_fs_btree_write_buffer_exit(struct bch_fs *);
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int bch2_fs_btree_write_buffer_init(struct bch_fs *);
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#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_H */
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