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4be214c269
Previously, bch2_bkey_sectors_need_rebalance() called bch2_target_accepts_data(), checking whether the target is writable. However, this means that adding or removing devices from a target would change the value of bch2_bkey_sectors_need_rebalance() for an existing extent; this needs to be invariant so that the extent trigger can correctly maintain rebalance_work accounting. Instead, check target_accepts_data() in io_opts_to_rebalance_opts(), before creating the bch_extent_rebalance entry. This fixes (one?) cause of rebalance_work accounting being off. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
301 lines
8.5 KiB
C
301 lines
8.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_INODE_H
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#define _BCACHEFS_INODE_H
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#include "bkey.h"
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#include "bkey_methods.h"
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#include "opts.h"
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#include "snapshot.h"
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extern const char * const bch2_inode_opts[];
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int bch2_inode_validate(struct bch_fs *, struct bkey_s_c,
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struct bkey_validate_context);
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int bch2_inode_v2_validate(struct bch_fs *, struct bkey_s_c,
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struct bkey_validate_context);
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int bch2_inode_v3_validate(struct bch_fs *, struct bkey_s_c,
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struct bkey_validate_context);
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void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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int __bch2_inode_has_child_snapshots(struct btree_trans *, struct bpos);
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static inline int bch2_inode_has_child_snapshots(struct btree_trans *trans, struct bpos pos)
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{
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return bch2_snapshot_is_leaf(trans->c, pos.snapshot) <= 0
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? __bch2_inode_has_child_snapshots(trans, pos)
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: 0;
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}
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int bch2_trigger_inode(struct btree_trans *, enum btree_id, unsigned,
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struct bkey_s_c, struct bkey_s,
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enum btree_iter_update_trigger_flags);
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#define bch2_bkey_ops_inode ((struct bkey_ops) { \
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.key_validate = bch2_inode_validate, \
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.val_to_text = bch2_inode_to_text, \
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.trigger = bch2_trigger_inode, \
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.min_val_size = 16, \
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})
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#define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \
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.key_validate = bch2_inode_v2_validate, \
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.val_to_text = bch2_inode_to_text, \
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.trigger = bch2_trigger_inode, \
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.min_val_size = 32, \
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})
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#define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \
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.key_validate = bch2_inode_v3_validate, \
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.val_to_text = bch2_inode_to_text, \
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.trigger = bch2_trigger_inode, \
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.min_val_size = 48, \
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})
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static inline bool bkey_is_inode(const struct bkey *k)
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{
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return k->type == KEY_TYPE_inode ||
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k->type == KEY_TYPE_inode_v2 ||
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k->type == KEY_TYPE_inode_v3;
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}
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int bch2_inode_generation_validate(struct bch_fs *, struct bkey_s_c,
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struct bkey_validate_context);
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void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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#define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \
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.key_validate = bch2_inode_generation_validate, \
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.val_to_text = bch2_inode_generation_to_text, \
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.min_val_size = 8, \
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})
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int bch2_inode_alloc_cursor_validate(struct bch_fs *, struct bkey_s_c,
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struct bkey_validate_context);
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void bch2_inode_alloc_cursor_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
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#define bch2_bkey_ops_inode_alloc_cursor ((struct bkey_ops) { \
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.key_validate = bch2_inode_alloc_cursor_validate, \
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.val_to_text = bch2_inode_alloc_cursor_to_text, \
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.min_val_size = 16, \
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})
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#if 0
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typedef struct {
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u64 lo;
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u32 hi;
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} __packed __aligned(4) u96;
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#endif
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typedef u64 u96;
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struct bch_inode_unpacked {
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u64 bi_inum;
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u32 bi_snapshot;
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u64 bi_journal_seq;
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__le64 bi_hash_seed;
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u64 bi_size;
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u64 bi_sectors;
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u64 bi_version;
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u32 bi_flags;
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u16 bi_mode;
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#define x(_name, _bits) u##_bits _name;
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BCH_INODE_FIELDS_v3()
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#undef x
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};
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BITMASK(INODE_STR_HASH, struct bch_inode_unpacked, bi_flags, 20, 24);
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struct bkey_inode_buf {
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struct bkey_i_inode_v3 inode;
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#define x(_name, _bits) + 8 + _bits / 8
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u8 _pad[0 + BCH_INODE_FIELDS_v3()];
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#undef x
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};
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void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
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int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);
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struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);
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void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
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int __bch2_inode_peek(struct btree_trans *, struct btree_iter *,
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struct bch_inode_unpacked *, subvol_inum, unsigned, bool);
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static inline int bch2_inode_peek_nowarn(struct btree_trans *trans,
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struct btree_iter *iter,
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struct bch_inode_unpacked *inode,
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subvol_inum inum, unsigned flags)
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{
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return __bch2_inode_peek(trans, iter, inode, inum, flags, false);
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}
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static inline int bch2_inode_peek(struct btree_trans *trans,
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struct btree_iter *iter,
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struct bch_inode_unpacked *inode,
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subvol_inum inum, unsigned flags)
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{
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return __bch2_inode_peek(trans, iter, inode, inum, flags, true);
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int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);
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return ret;
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}
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int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,
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struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags);
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static inline int bch2_inode_write(struct btree_trans *trans,
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struct btree_iter *iter,
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struct bch_inode_unpacked *inode)
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{
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return bch2_inode_write_flags(trans, iter, inode, 0);
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}
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int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
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int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);
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void bch2_inode_init_early(struct bch_fs *,
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struct bch_inode_unpacked *);
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void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
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uid_t, gid_t, umode_t, dev_t,
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struct bch_inode_unpacked *);
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void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
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uid_t, gid_t, umode_t, dev_t,
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struct bch_inode_unpacked *);
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int bch2_inode_create(struct btree_trans *, struct btree_iter *,
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struct bch_inode_unpacked *, u32, u64);
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int bch2_inode_rm(struct bch_fs *, subvol_inum);
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int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,
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subvol_inum,
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struct bch_inode_unpacked *);
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int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
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struct bch_inode_unpacked *);
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int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
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struct bch_inode_unpacked *);
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#define inode_opt_get(_c, _inode, _name) \
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((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name)
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static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
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enum inode_opt_id id, u64 v)
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{
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switch (id) {
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#define x(_name, ...) \
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case Inode_opt_##_name: \
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inode->bi_##_name = v; \
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break;
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BCH_INODE_OPTS()
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#undef x
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default:
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BUG();
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}
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}
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static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
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enum inode_opt_id id)
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{
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switch (id) {
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#define x(_name, ...) \
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case Inode_opt_##_name: \
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return inode->bi_##_name;
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BCH_INODE_OPTS()
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#undef x
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default:
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BUG();
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}
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}
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static inline u8 mode_to_type(umode_t mode)
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{
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return (mode >> 12) & 15;
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}
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static inline u8 inode_d_type(struct bch_inode_unpacked *inode)
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{
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return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode);
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}
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static inline u32 bch2_inode_flags(struct bkey_s_c k)
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{
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switch (k.k->type) {
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case KEY_TYPE_inode:
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return le32_to_cpu(bkey_s_c_to_inode(k).v->bi_flags);
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case KEY_TYPE_inode_v2:
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return le64_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_flags);
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case KEY_TYPE_inode_v3:
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return le64_to_cpu(bkey_s_c_to_inode_v3(k).v->bi_flags);
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default:
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return 0;
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}
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}
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static inline unsigned bkey_inode_mode(struct bkey_s_c k)
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{
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switch (k.k->type) {
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case KEY_TYPE_inode:
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return le16_to_cpu(bkey_s_c_to_inode(k).v->bi_mode);
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case KEY_TYPE_inode_v2:
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return le16_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_mode);
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case KEY_TYPE_inode_v3:
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return INODEv3_MODE(bkey_s_c_to_inode_v3(k).v);
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default:
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return 0;
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}
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}
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/* i_nlink: */
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static inline unsigned nlink_bias(umode_t mode)
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{
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return S_ISDIR(mode) ? 2 : 1;
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}
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static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
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{
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return bi->bi_flags & BCH_INODE_unlinked
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? 0
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: bi->bi_nlink + nlink_bias(bi->bi_mode);
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}
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static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
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unsigned nlink)
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{
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if (nlink) {
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bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
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bi->bi_flags &= ~BCH_INODE_unlinked;
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} else {
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bi->bi_nlink = 0;
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bi->bi_flags |= BCH_INODE_unlinked;
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}
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}
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int bch2_inode_nlink_inc(struct bch_inode_unpacked *);
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void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);
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static inline bool bch2_inode_should_have_single_bp(struct bch_inode_unpacked *inode)
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{
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bool inode_has_bp = inode->bi_dir || inode->bi_dir_offset;
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return S_ISDIR(inode->bi_mode) ||
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(!inode->bi_nlink && inode_has_bp);
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}
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struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *);
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void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *,
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struct bch_inode_unpacked *);
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int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *);
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#include "rebalance.h"
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static inline struct bch_extent_rebalance
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bch2_inode_rebalance_opts_get(struct bch_fs *c, struct bch_inode_unpacked *inode)
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{
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struct bch_io_opts io_opts;
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bch2_inode_opts_get(&io_opts, c, inode);
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return io_opts_to_rebalance_opts(c, &io_opts);
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}
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int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32);
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int bch2_delete_dead_inodes(struct bch_fs *);
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#endif /* _BCACHEFS_INODE_H */
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