linux/fs/bcachefs/rebalance.h
Kent Overstreet 9e2c3c2ed4 bcachefs: Fix lost rebalance wakeups
Fix a missing wakeup in

'bcachefs set-file-option' -> xattr option update -> inode_write

this was missing because the wakeup needs to happen after transaction
commit. Also, add a 'kick' counter, to make sure we don't miss a wakeup
that occured right after we finished checking the rebalance_work btree.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-05-27 00:02:44 -04:00

59 lines
1.7 KiB
C

/* 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_io_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;
};
u64 bch2_bkey_sectors_need_rebalance(struct bch_fs *, struct bkey_s_c);
int bch2_bkey_set_needs_rebalance(struct bch_fs *, struct bch_io_opts *, struct bkey_i *);
int bch2_get_update_rebalance_opts(struct btree_trans *,
struct bch_io_opts *,
struct btree_iter *,
struct bkey_s_c);
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 */