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154 lines
4.7 KiB
154 lines
4.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _RAID5_LOG_H |
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#define _RAID5_LOG_H |
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extern int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev); |
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extern void r5l_exit_log(struct r5conf *conf); |
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extern int r5l_write_stripe(struct r5l_log *log, struct stripe_head *head_sh); |
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extern void r5l_write_stripe_run(struct r5l_log *log); |
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extern void r5l_flush_stripe_to_raid(struct r5l_log *log); |
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extern void r5l_stripe_write_finished(struct stripe_head *sh); |
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extern int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio); |
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extern void r5l_quiesce(struct r5l_log *log, int quiesce); |
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extern bool r5l_log_disk_error(struct r5conf *conf); |
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extern bool r5c_is_writeback(struct r5l_log *log); |
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extern int |
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r5c_try_caching_write(struct r5conf *conf, struct stripe_head *sh, |
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struct stripe_head_state *s, int disks); |
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extern void |
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r5c_finish_stripe_write_out(struct r5conf *conf, struct stripe_head *sh, |
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struct stripe_head_state *s); |
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extern void r5c_release_extra_page(struct stripe_head *sh); |
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extern void r5c_use_extra_page(struct stripe_head *sh); |
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extern void r5l_wake_reclaim(struct r5l_log *log, sector_t space); |
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extern void r5c_handle_cached_data_endio(struct r5conf *conf, |
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struct stripe_head *sh, int disks); |
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extern int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh); |
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extern void r5c_make_stripe_write_out(struct stripe_head *sh); |
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extern void r5c_flush_cache(struct r5conf *conf, int num); |
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extern void r5c_check_stripe_cache_usage(struct r5conf *conf); |
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extern void r5c_check_cached_full_stripe(struct r5conf *conf); |
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extern struct md_sysfs_entry r5c_journal_mode; |
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extern void r5c_update_on_rdev_error(struct mddev *mddev, |
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struct md_rdev *rdev); |
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extern bool r5c_big_stripe_cached(struct r5conf *conf, sector_t sect); |
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extern int r5l_start(struct r5l_log *log); |
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extern struct dma_async_tx_descriptor * |
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ops_run_partial_parity(struct stripe_head *sh, struct raid5_percpu *percpu, |
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struct dma_async_tx_descriptor *tx); |
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extern int ppl_init_log(struct r5conf *conf); |
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extern void ppl_exit_log(struct r5conf *conf); |
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extern int ppl_write_stripe(struct r5conf *conf, struct stripe_head *sh); |
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extern void ppl_write_stripe_run(struct r5conf *conf); |
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extern void ppl_stripe_write_finished(struct stripe_head *sh); |
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extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add); |
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extern void ppl_quiesce(struct r5conf *conf, int quiesce); |
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extern int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio); |
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extern struct md_sysfs_entry ppl_write_hint; |
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static inline bool raid5_has_log(struct r5conf *conf) |
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{ |
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return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags); |
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} |
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static inline bool raid5_has_ppl(struct r5conf *conf) |
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{ |
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return test_bit(MD_HAS_PPL, &conf->mddev->flags); |
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} |
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static inline int log_stripe(struct stripe_head *sh, struct stripe_head_state *s) |
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{ |
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struct r5conf *conf = sh->raid_conf; |
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if (conf->log) { |
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if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) { |
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/* writing out phase */ |
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if (s->waiting_extra_page) |
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return 0; |
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return r5l_write_stripe(conf->log, sh); |
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} else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { |
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/* caching phase */ |
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return r5c_cache_data(conf->log, sh); |
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} |
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} else if (raid5_has_ppl(conf)) { |
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return ppl_write_stripe(conf, sh); |
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} |
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return -EAGAIN; |
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} |
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static inline void log_stripe_write_finished(struct stripe_head *sh) |
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{ |
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struct r5conf *conf = sh->raid_conf; |
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if (conf->log) |
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r5l_stripe_write_finished(sh); |
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else if (raid5_has_ppl(conf)) |
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ppl_stripe_write_finished(sh); |
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} |
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static inline void log_write_stripe_run(struct r5conf *conf) |
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{ |
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if (conf->log) |
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r5l_write_stripe_run(conf->log); |
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else if (raid5_has_ppl(conf)) |
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ppl_write_stripe_run(conf); |
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} |
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static inline void log_flush_stripe_to_raid(struct r5conf *conf) |
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{ |
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if (conf->log) |
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r5l_flush_stripe_to_raid(conf->log); |
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else if (raid5_has_ppl(conf)) |
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ppl_write_stripe_run(conf); |
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} |
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static inline int log_handle_flush_request(struct r5conf *conf, struct bio *bio) |
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{ |
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int ret = -ENODEV; |
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if (conf->log) |
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ret = r5l_handle_flush_request(conf->log, bio); |
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else if (raid5_has_ppl(conf)) |
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ret = ppl_handle_flush_request(conf->log, bio); |
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return ret; |
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} |
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static inline void log_quiesce(struct r5conf *conf, int quiesce) |
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{ |
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if (conf->log) |
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r5l_quiesce(conf->log, quiesce); |
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else if (raid5_has_ppl(conf)) |
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ppl_quiesce(conf, quiesce); |
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} |
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static inline void log_exit(struct r5conf *conf) |
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{ |
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if (conf->log) |
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r5l_exit_log(conf); |
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else if (raid5_has_ppl(conf)) |
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ppl_exit_log(conf); |
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} |
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static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
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bool ppl) |
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{ |
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if (journal_dev) |
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return r5l_init_log(conf, journal_dev); |
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else if (ppl) |
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return ppl_init_log(conf); |
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return 0; |
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} |
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static inline int log_modify(struct r5conf *conf, struct md_rdev *rdev, bool add) |
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{ |
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if (raid5_has_ppl(conf)) |
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return ppl_modify_log(conf, rdev, add); |
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return 0; |
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} |
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#endif
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