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