47f521ba18
Pull MD update from Shaohua Li: "This update mostly includes bug fixes: - md-cluster now supports raid10 from Guoqing - raid5 PPL fixes from Artur - badblock regression fix from Bo - suspend hang related fixes from Neil - raid5 reshape fixes from Neil - raid1 freeze deadlock fix from Nate - memleak fixes from Zdenek - bitmap related fixes from Me and Tao - other fixes and cleanups" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (33 commits) md: free unused memory after bitmap resize md: release allocated bitset sync_set md/bitmap: clear BITMAP_WRITE_ERROR bit before writing it to sb md: be cautious about using ->curr_resync_completed for ->recovery_offset badblocks: fix wrong return value in badblocks_set if badblocks are disabled md: don't check MD_SB_CHANGE_CLEAN in md_allow_write md-cluster: update document for raid10 md: remove redundant variable q raid1: remove obsolete code in raid1_write_request md-cluster: Use a small window for raid10 resync md-cluster: Suspend writes in RAID10 if within range md-cluster/raid10: set "do_balance = 0" if area is resyncing md: use lockdep_assert_held raid1: prevent freeze_array/wait_all_barriers deadlock md: use TASK_IDLE instead of blocking signals md: remove special meaning of ->quiesce(.., 2) md: allow metadata update while suspending. md: use mddev_suspend/resume instead of ->quiesce() md: move suspend_hi/lo handling into core md code md: don't call bitmap_create() while array is quiesced. ...
118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/* 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 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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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_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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