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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ff875738 AP |
2 | #ifndef _RAID5_LOG_H |
3 | #define _RAID5_LOG_H | |
4 | ||
ed0c6a5f LG |
5 | int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev); |
6 | void r5l_exit_log(struct r5conf *conf); | |
7 | int r5l_write_stripe(struct r5l_log *log, struct stripe_head *head_sh); | |
8 | void r5l_write_stripe_run(struct r5l_log *log); | |
9 | void r5l_flush_stripe_to_raid(struct r5l_log *log); | |
10 | void r5l_stripe_write_finished(struct stripe_head *sh); | |
11 | int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio); | |
12 | void r5l_quiesce(struct r5l_log *log, int quiesce); | |
13 | bool r5l_log_disk_error(struct r5conf *conf); | |
14 | bool r5c_is_writeback(struct r5l_log *log); | |
15 | int r5c_try_caching_write(struct r5conf *conf, struct stripe_head *sh, | |
16 | struct stripe_head_state *s, int disks); | |
17 | void r5c_finish_stripe_write_out(struct r5conf *conf, struct stripe_head *sh, | |
18 | struct stripe_head_state *s); | |
19 | void r5c_release_extra_page(struct stripe_head *sh); | |
20 | void r5c_use_extra_page(struct stripe_head *sh); | |
21 | void r5l_wake_reclaim(struct r5l_log *log, sector_t space); | |
22 | void r5c_handle_cached_data_endio(struct r5conf *conf, | |
23 | struct stripe_head *sh, int disks); | |
24 | int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh); | |
25 | void r5c_make_stripe_write_out(struct stripe_head *sh); | |
26 | void r5c_flush_cache(struct r5conf *conf, int num); | |
27 | void r5c_check_stripe_cache_usage(struct r5conf *conf); | |
28 | void r5c_check_cached_full_stripe(struct r5conf *conf); | |
ff875738 | 29 | extern struct md_sysfs_entry r5c_journal_mode; |
ed0c6a5f LG |
30 | void r5c_update_on_rdev_error(struct mddev *mddev, struct md_rdev *rdev); |
31 | bool r5c_big_stripe_cached(struct r5conf *conf, sector_t sect); | |
32 | int r5l_start(struct r5l_log *log); | |
ff875738 | 33 | |
ed0c6a5f | 34 | struct dma_async_tx_descriptor * |
3418d036 AP |
35 | ops_run_partial_parity(struct stripe_head *sh, struct raid5_percpu *percpu, |
36 | struct dma_async_tx_descriptor *tx); | |
ed0c6a5f LG |
37 | int ppl_init_log(struct r5conf *conf); |
38 | void ppl_exit_log(struct r5conf *conf); | |
39 | int ppl_write_stripe(struct r5conf *conf, struct stripe_head *sh); | |
40 | void ppl_write_stripe_run(struct r5conf *conf); | |
41 | void ppl_stripe_write_finished(struct stripe_head *sh); | |
42 | int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add); | |
43 | void ppl_quiesce(struct r5conf *conf, int quiesce); | |
e0fccdaf | 44 | int ppl_handle_flush_request(struct bio *bio); |
a596d086 | 45 | extern struct md_sysfs_entry ppl_write_hint; |
3418d036 | 46 | |
e254de6b SL |
47 | static inline bool raid5_has_log(struct r5conf *conf) |
48 | { | |
49 | return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags); | |
50 | } | |
51 | ||
3418d036 AP |
52 | static inline bool raid5_has_ppl(struct r5conf *conf) |
53 | { | |
54 | return test_bit(MD_HAS_PPL, &conf->mddev->flags); | |
55 | } | |
56 | ||
ff875738 AP |
57 | static inline int log_stripe(struct stripe_head *sh, struct stripe_head_state *s) |
58 | { | |
59 | struct r5conf *conf = sh->raid_conf; | |
60 | ||
61 | if (conf->log) { | |
62 | if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) { | |
63 | /* writing out phase */ | |
64 | if (s->waiting_extra_page) | |
65 | return 0; | |
66 | return r5l_write_stripe(conf->log, sh); | |
67 | } else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { | |
68 | /* caching phase */ | |
69 | return r5c_cache_data(conf->log, sh); | |
70 | } | |
3418d036 AP |
71 | } else if (raid5_has_ppl(conf)) { |
72 | return ppl_write_stripe(conf, sh); | |
ff875738 AP |
73 | } |
74 | ||
75 | return -EAGAIN; | |
76 | } | |
77 | ||
78 | static inline void log_stripe_write_finished(struct stripe_head *sh) | |
79 | { | |
80 | struct r5conf *conf = sh->raid_conf; | |
81 | ||
82 | if (conf->log) | |
83 | r5l_stripe_write_finished(sh); | |
3418d036 AP |
84 | else if (raid5_has_ppl(conf)) |
85 | ppl_stripe_write_finished(sh); | |
ff875738 AP |
86 | } |
87 | ||
88 | static inline void log_write_stripe_run(struct r5conf *conf) | |
89 | { | |
90 | if (conf->log) | |
91 | r5l_write_stripe_run(conf->log); | |
3418d036 AP |
92 | else if (raid5_has_ppl(conf)) |
93 | ppl_write_stripe_run(conf); | |
ff875738 AP |
94 | } |
95 | ||
1532d9e8 TM |
96 | static inline void log_flush_stripe_to_raid(struct r5conf *conf) |
97 | { | |
98 | if (conf->log) | |
99 | r5l_flush_stripe_to_raid(conf->log); | |
100 | else if (raid5_has_ppl(conf)) | |
101 | ppl_write_stripe_run(conf); | |
102 | } | |
103 | ||
104 | static inline int log_handle_flush_request(struct r5conf *conf, struct bio *bio) | |
105 | { | |
106 | int ret = -ENODEV; | |
107 | ||
108 | if (conf->log) | |
109 | ret = r5l_handle_flush_request(conf->log, bio); | |
110 | else if (raid5_has_ppl(conf)) | |
e0fccdaf | 111 | ret = ppl_handle_flush_request(bio); |
1532d9e8 TM |
112 | |
113 | return ret; | |
114 | } | |
115 | ||
116 | static inline void log_quiesce(struct r5conf *conf, int quiesce) | |
117 | { | |
118 | if (conf->log) | |
119 | r5l_quiesce(conf->log, quiesce); | |
120 | else if (raid5_has_ppl(conf)) | |
121 | ppl_quiesce(conf, quiesce); | |
122 | } | |
123 | ||
ff875738 AP |
124 | static inline void log_exit(struct r5conf *conf) |
125 | { | |
126 | if (conf->log) | |
127 | r5l_exit_log(conf); | |
3418d036 AP |
128 | else if (raid5_has_ppl(conf)) |
129 | ppl_exit_log(conf); | |
ff875738 AP |
130 | } |
131 | ||
845b9e22 AP |
132 | static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
133 | bool ppl) | |
ff875738 AP |
134 | { |
135 | if (journal_dev) | |
136 | return r5l_init_log(conf, journal_dev); | |
845b9e22 | 137 | else if (ppl) |
3418d036 | 138 | return ppl_init_log(conf); |
ff875738 AP |
139 | |
140 | return 0; | |
141 | } | |
142 | ||
6358c239 AP |
143 | static inline int log_modify(struct r5conf *conf, struct md_rdev *rdev, bool add) |
144 | { | |
145 | if (raid5_has_ppl(conf)) | |
146 | return ppl_modify_log(conf, rdev, add); | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
ff875738 | 151 | #endif |