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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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0c069781dd
Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_MOVE_H
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#define _BCACHEFS_MOVE_H
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#include "bbpos.h"
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#include "bcachefs_ioctl.h"
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#include "btree_iter.h"
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#include "buckets.h"
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#include "data_update.h"
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#include "move_types.h"
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struct bch_read_bio;
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struct moving_context {
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struct btree_trans *trans;
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struct list_head list;
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void *fn;
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struct bch_ratelimit *rate;
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struct bch_move_stats *stats;
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struct write_point_specifier wp;
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bool wait_on_copygc;
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bool write_error;
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/* For waiting on outstanding reads and writes: */
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struct closure cl;
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struct mutex lock;
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struct list_head reads;
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struct list_head ios;
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/* in flight sectors: */
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atomic_t read_sectors;
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atomic_t write_sectors;
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atomic_t read_ios;
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atomic_t write_ios;
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wait_queue_head_t wait;
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};
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#define move_ctxt_wait_event_timeout(_ctxt, _cond, _timeout) \
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({ \
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int _ret = 0; \
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while (true) { \
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bool cond_finished = false; \
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bch2_moving_ctxt_do_pending_writes(_ctxt); \
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\
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if (_cond) \
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break; \
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bch2_trans_unlock_long((_ctxt)->trans); \
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_ret = __wait_event_timeout((_ctxt)->wait, \
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bch2_moving_ctxt_next_pending_write(_ctxt) || \
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(cond_finished = (_cond)), _timeout); \
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if (_ret || ( cond_finished)) \
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break; \
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} \
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_ret; \
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})
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#define move_ctxt_wait_event(_ctxt, _cond) \
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do { \
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bool cond_finished = false; \
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bch2_moving_ctxt_do_pending_writes(_ctxt); \
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\
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if (_cond) \
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break; \
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bch2_trans_unlock_long((_ctxt)->trans); \
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__wait_event((_ctxt)->wait, \
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bch2_moving_ctxt_next_pending_write(_ctxt) || \
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(cond_finished = (_cond))); \
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if (cond_finished) \
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break; \
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} while (1)
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typedef bool (*move_pred_fn)(struct bch_fs *, void *, struct bkey_s_c,
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struct bch_io_opts *, struct data_update_opts *);
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extern const char * const bch2_data_ops_strs[];
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void bch2_moving_ctxt_exit(struct moving_context *);
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void bch2_moving_ctxt_init(struct moving_context *, struct bch_fs *,
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struct bch_ratelimit *, struct bch_move_stats *,
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struct write_point_specifier, bool);
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struct moving_io *bch2_moving_ctxt_next_pending_write(struct moving_context *);
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void bch2_moving_ctxt_do_pending_writes(struct moving_context *);
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void bch2_moving_ctxt_flush_all(struct moving_context *);
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void bch2_move_ctxt_wait_for_io(struct moving_context *);
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int bch2_move_ratelimit(struct moving_context *);
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/* Inodes in different snapshots may have different IO options: */
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struct snapshot_io_opts_entry {
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u32 snapshot;
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struct bch_io_opts io_opts;
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};
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struct per_snapshot_io_opts {
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u64 cur_inum;
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struct bch_io_opts fs_io_opts;
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DARRAY(struct snapshot_io_opts_entry) d;
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};
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static inline void per_snapshot_io_opts_init(struct per_snapshot_io_opts *io_opts, struct bch_fs *c)
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{
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memset(io_opts, 0, sizeof(*io_opts));
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io_opts->fs_io_opts = bch2_opts_to_inode_opts(c->opts);
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}
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static inline void per_snapshot_io_opts_exit(struct per_snapshot_io_opts *io_opts)
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{
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darray_exit(&io_opts->d);
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}
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struct bch_io_opts *bch2_move_get_io_opts(struct btree_trans *,
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struct per_snapshot_io_opts *, struct bkey_s_c);
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int bch2_move_get_io_opts_one(struct btree_trans *, struct bch_io_opts *, struct bkey_s_c);
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int bch2_scan_old_btree_nodes(struct bch_fs *, struct bch_move_stats *);
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int bch2_move_extent(struct moving_context *,
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struct move_bucket_in_flight *,
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struct btree_iter *,
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struct bkey_s_c,
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struct bch_io_opts,
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struct data_update_opts);
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int __bch2_move_data(struct moving_context *,
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struct bbpos,
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struct bbpos,
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move_pred_fn, void *);
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int bch2_move_data(struct bch_fs *,
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struct bbpos start,
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struct bbpos end,
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struct bch_ratelimit *,
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struct bch_move_stats *,
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struct write_point_specifier,
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bool,
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move_pred_fn, void *);
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int bch2_evacuate_bucket(struct moving_context *,
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struct move_bucket_in_flight *,
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struct bpos, int,
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struct data_update_opts);
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int bch2_data_job(struct bch_fs *,
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struct bch_move_stats *,
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struct bch_ioctl_data);
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void bch2_move_stats_to_text(struct printbuf *, struct bch_move_stats *);
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void bch2_move_stats_exit(struct bch_move_stats *, struct bch_fs *);
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void bch2_move_stats_init(struct bch_move_stats *, const char *);
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void bch2_fs_moving_ctxts_to_text(struct printbuf *, struct bch_fs *);
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void bch2_fs_move_init(struct bch_fs *);
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#endif /* _BCACHEFS_MOVE_H */
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