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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_REBALANCE_H
#define _BCACHEFS_REBALANCE_H
#include "compress.h"
#include "disk_groups.h"
#include "opts.h"
#include "rebalance_types.h"
static inline struct bch_extent_rebalance io_opts_to_rebalance_opts(struct bch_fs *c,
struct bch_inode_opts *opts)
{
struct bch_extent_rebalance r = {
.type = BIT(BCH_EXTENT_ENTRY_rebalance),
#define x(_name) \
._name = opts->_name, \
._name##_from_inode = opts->_name##_from_inode,
BCH_REBALANCE_OPTS()
#undef x
};
if (r.background_target &&
!bch2_target_accepts_data(c, BCH_DATA_user, r.background_target))
r.background_target = 0;
return r;
};
void bch2_extent_rebalance_to_text(struct printbuf *, struct bch_fs *,
const struct bch_extent_rebalance *);
u64 bch2_bkey_sectors_need_rebalance(struct bch_fs *, struct bkey_s_c);
enum set_needs_rebalance_ctx {
SET_NEEDS_REBALANCE_opt_change,
SET_NEEDS_REBALANCE_opt_change_indirect,
SET_NEEDS_REBALANCE_foreground,
SET_NEEDS_REBALANCE_other,
};
int bch2_bkey_set_needs_rebalance(struct bch_fs *, struct bch_inode_opts *,
struct bkey_i *, enum set_needs_rebalance_ctx, u32);
/* Inodes in different snapshots may have different IO options: */
struct snapshot_io_opts_entry {
u32 snapshot;
struct bch_inode_opts io_opts;
};
struct per_snapshot_io_opts {
u64 cur_inum;
struct bch_inode_opts fs_io_opts;
DARRAY(struct snapshot_io_opts_entry) d;
};
static inline void per_snapshot_io_opts_init(struct per_snapshot_io_opts *io_opts, struct bch_fs *c)
{
memset(io_opts, 0, sizeof(*io_opts));
bch2_inode_opts_get(c, &io_opts->fs_io_opts);
}
static inline void per_snapshot_io_opts_exit(struct per_snapshot_io_opts *io_opts)
{
darray_exit(&io_opts->d);
}
struct bch_inode_opts *bch2_extent_get_apply_io_opts(struct btree_trans *,
struct per_snapshot_io_opts *, struct bpos,
struct btree_iter *, struct bkey_s_c,
enum set_needs_rebalance_ctx);
int bch2_extent_get_io_opts_one(struct btree_trans *, struct bch_inode_opts *,
struct btree_iter *, struct bkey_s_c,
enum set_needs_rebalance_ctx);
int bch2_extent_get_apply_io_opts_one(struct btree_trans *, struct bch_inode_opts *,
struct btree_iter *, struct bkey_s_c,
enum set_needs_rebalance_ctx);
int bch2_set_rebalance_needs_scan_trans(struct btree_trans *, u64);
int bch2_set_rebalance_needs_scan(struct bch_fs *, u64 inum);
int bch2_set_fs_needs_rebalance(struct bch_fs *);
static inline void bch2_rebalance_wakeup(struct bch_fs *c)
{
c->rebalance.kick++;
guard(rcu)();
struct task_struct *p = rcu_dereference(c->rebalance.thread);
if (p)
wake_up_process(p);
}
void bch2_rebalance_status_to_text(struct printbuf *, struct bch_fs *);
void bch2_rebalance_stop(struct bch_fs *);
int bch2_rebalance_start(struct bch_fs *);
void bch2_fs_rebalance_exit(struct bch_fs *);
int bch2_fs_rebalance_init(struct bch_fs *);
int bch2_check_rebalance_work(struct bch_fs *);
#endif /* _BCACHEFS_REBALANCE_H */
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