From dc50eab76b709d68175a358d6e23a5a3890764d3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:39:57 +0200 Subject: Merging upstream version 6.7.7. Signed-off-by: Daniel Baumann --- fs/bcachefs/btree_io.h | 225 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 225 insertions(+) create mode 100644 fs/bcachefs/btree_io.h (limited to 'fs/bcachefs/btree_io.h') diff --git a/fs/bcachefs/btree_io.h b/fs/bcachefs/btree_io.h new file mode 100644 index 0000000000..e0d7fa5b1d --- /dev/null +++ b/fs/bcachefs/btree_io.h @@ -0,0 +1,225 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_BTREE_IO_H +#define _BCACHEFS_BTREE_IO_H + +#include "bkey_methods.h" +#include "bset.h" +#include "btree_locking.h" +#include "checksum.h" +#include "extents.h" +#include "io_write_types.h" + +struct bch_fs; +struct btree_write; +struct btree; +struct btree_iter; +struct btree_node_read_all; + +static inline void set_btree_node_dirty_acct(struct bch_fs *c, struct btree *b) +{ + if (!test_and_set_bit(BTREE_NODE_dirty, &b->flags)) + atomic_inc(&c->btree_cache.dirty); +} + +static inline void clear_btree_node_dirty_acct(struct bch_fs *c, struct btree *b) +{ + if (test_and_clear_bit(BTREE_NODE_dirty, &b->flags)) + atomic_dec(&c->btree_cache.dirty); +} + +static inline unsigned btree_ptr_sectors_written(struct bkey_i *k) +{ + return k->k.type == KEY_TYPE_btree_ptr_v2 + ? le16_to_cpu(bkey_i_to_btree_ptr_v2(k)->v.sectors_written) + : 0; +} + +struct btree_read_bio { + struct bch_fs *c; + struct btree *b; + struct btree_node_read_all *ra; + u64 start_time; + unsigned have_ioref:1; + unsigned idx:7; + struct extent_ptr_decoded pick; + struct work_struct work; + struct bio bio; +}; + +struct btree_write_bio { + struct work_struct work; + __BKEY_PADDED(key, BKEY_BTREE_PTR_VAL_U64s_MAX); + void *data; + unsigned data_bytes; + unsigned sector_offset; + struct bch_write_bio wbio; +}; + +void bch2_btree_node_io_unlock(struct btree *); +void bch2_btree_node_io_lock(struct btree *); +void __bch2_btree_node_wait_on_read(struct btree *); +void __bch2_btree_node_wait_on_write(struct btree *); +void bch2_btree_node_wait_on_read(struct btree *); +void bch2_btree_node_wait_on_write(struct btree *); + +enum compact_mode { + COMPACT_LAZY, + COMPACT_ALL, +}; + +bool bch2_compact_whiteouts(struct bch_fs *, struct btree *, + enum compact_mode); + +static inline bool should_compact_bset_lazy(struct btree *b, + struct bset_tree *t) +{ + unsigned total_u64s = bset_u64s(t); + unsigned dead_u64s = bset_dead_u64s(b, t); + + return dead_u64s > 64 && dead_u64s * 3 > total_u64s; +} + +static inline bool bch2_maybe_compact_whiteouts(struct bch_fs *c, struct btree *b) +{ + struct bset_tree *t; + + for_each_bset(b, t) + if (should_compact_bset_lazy(b, t)) + return bch2_compact_whiteouts(c, b, COMPACT_LAZY); + + return false; +} + +static inline struct nonce btree_nonce(struct bset *i, unsigned offset) +{ + return (struct nonce) {{ + [0] = cpu_to_le32(offset), + [1] = ((__le32 *) &i->seq)[0], + [2] = ((__le32 *) &i->seq)[1], + [3] = ((__le32 *) &i->journal_seq)[0]^BCH_NONCE_BTREE, + }}; +} + +static inline int bset_encrypt(struct bch_fs *c, struct bset *i, unsigned offset) +{ + struct nonce nonce = btree_nonce(i, offset); + int ret; + + if (!offset) { + struct btree_node *bn = container_of(i, struct btree_node, keys); + unsigned bytes = (void *) &bn->keys - (void *) &bn->flags; + + ret = bch2_encrypt(c, BSET_CSUM_TYPE(i), nonce, + &bn->flags, bytes); + if (ret) + return ret; + + nonce = nonce_add(nonce, round_up(bytes, CHACHA_BLOCK_SIZE)); + } + + return bch2_encrypt(c, BSET_CSUM_TYPE(i), nonce, i->_data, + vstruct_end(i) - (void *) i->_data); +} + +void bch2_btree_sort_into(struct bch_fs *, struct btree *, struct btree *); + +void bch2_btree_node_drop_keys_outside_node(struct btree *); + +void bch2_btree_build_aux_trees(struct btree *); +void bch2_btree_init_next(struct btree_trans *, struct btree *); + +int bch2_btree_node_read_done(struct bch_fs *, struct bch_dev *, + struct btree *, bool, bool *); +void bch2_btree_node_read(struct bch_fs *, struct btree *, bool); +int bch2_btree_root_read(struct bch_fs *, enum btree_id, + const struct bkey_i *, unsigned); + +bool bch2_btree_post_write_cleanup(struct bch_fs *, struct btree *); + +enum btree_write_flags { + __BTREE_WRITE_ONLY_IF_NEED = BTREE_WRITE_TYPE_BITS, + __BTREE_WRITE_ALREADY_STARTED, +}; +#define BTREE_WRITE_ONLY_IF_NEED BIT(__BTREE_WRITE_ONLY_IF_NEED) +#define BTREE_WRITE_ALREADY_STARTED BIT(__BTREE_WRITE_ALREADY_STARTED) + +void __bch2_btree_node_write(struct bch_fs *, struct btree *, unsigned); +void bch2_btree_node_write(struct bch_fs *, struct btree *, + enum six_lock_type, unsigned); + +static inline void btree_node_write_if_need(struct bch_fs *c, struct btree *b, + enum six_lock_type lock_held) +{ + bch2_btree_node_write(c, b, lock_held, BTREE_WRITE_ONLY_IF_NEED); +} + +bool bch2_btree_flush_all_reads(struct bch_fs *); +bool bch2_btree_flush_all_writes(struct bch_fs *); + +static inline void compat_bformat(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, struct bkey_format *f) +{ + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id == BTREE_ID_inodes) { + swap(f->bits_per_field[BKEY_FIELD_INODE], + f->bits_per_field[BKEY_FIELD_OFFSET]); + swap(f->field_offset[BKEY_FIELD_INODE], + f->field_offset[BKEY_FIELD_OFFSET]); + } + + if (version < bcachefs_metadata_version_snapshot && + (level || btree_type_has_snapshots(btree_id))) { + u64 max_packed = + ~(~0ULL << f->bits_per_field[BKEY_FIELD_SNAPSHOT]); + + f->field_offset[BKEY_FIELD_SNAPSHOT] = write + ? 0 + : cpu_to_le64(U32_MAX - max_packed); + } +} + +static inline void compat_bpos(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, struct bpos *p) +{ + if (big_endian != CPU_BIG_ENDIAN) + bch2_bpos_swab(p); + + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id == BTREE_ID_inodes) + swap(p->inode, p->offset); +} + +static inline void compat_btree_node(unsigned level, enum btree_id btree_id, + unsigned version, unsigned big_endian, + int write, + struct btree_node *bn) +{ + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id_is_extents(btree_id) && + !bpos_eq(bn->min_key, POS_MIN) && + write) + bn->min_key = bpos_nosnap_predecessor(bn->min_key); + + if (version < bcachefs_metadata_version_snapshot && + write) + bn->max_key.snapshot = 0; + + compat_bpos(level, btree_id, version, big_endian, write, &bn->min_key); + compat_bpos(level, btree_id, version, big_endian, write, &bn->max_key); + + if (version < bcachefs_metadata_version_snapshot && + !write) + bn->max_key.snapshot = U32_MAX; + + if (version < bcachefs_metadata_version_inode_btree_change && + btree_id_is_extents(btree_id) && + !bpos_eq(bn->min_key, POS_MIN) && + !write) + bn->min_key = bpos_nosnap_successor(bn->min_key); +} + +void bch2_btree_write_stats_to_text(struct printbuf *, struct bch_fs *); + +#endif /* _BCACHEFS_BTREE_IO_H */ -- cgit v1.2.3