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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 | ||
5 | extern int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev); | |
6 | extern void r5l_exit_log(struct r5conf *conf); | |
7 | extern int r5l_write_stripe(struct r5l_log *log, struct stripe_head *head_sh); | |
8 | extern void r5l_write_stripe_run(struct r5l_log *log); | |
9 | extern void r5l_flush_stripe_to_raid(struct r5l_log *log); | |
10 | extern void r5l_stripe_write_finished(struct stripe_head *sh); | |
11 | extern int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio); | |
b03e0ccb | 12 | extern void r5l_quiesce(struct r5l_log *log, int quiesce); |
ff875738 AP |
13 | extern bool r5l_log_disk_error(struct r5conf *conf); |
14 | extern bool r5c_is_writeback(struct r5l_log *log); | |
15 | extern int | |
16 | r5c_try_caching_write(struct r5conf *conf, struct stripe_head *sh, | |
17 | struct stripe_head_state *s, int disks); | |
18 | extern void | |
19 | r5c_finish_stripe_write_out(struct r5conf *conf, struct stripe_head *sh, | |
20 | struct stripe_head_state *s); | |
21 | extern void r5c_release_extra_page(struct stripe_head *sh); | |
22 | extern void r5c_use_extra_page(struct stripe_head *sh); | |
23 | extern void r5l_wake_reclaim(struct r5l_log *log, sector_t space); | |
24 | extern void r5c_handle_cached_data_endio(struct r5conf *conf, | |
bd83d0a2 | 25 | struct stripe_head *sh, int disks); |
ff875738 AP |
26 | extern int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh); |
27 | extern void r5c_make_stripe_write_out(struct stripe_head *sh); | |
28 | extern void r5c_flush_cache(struct r5conf *conf, int num); | |
29 | extern void r5c_check_stripe_cache_usage(struct r5conf *conf); | |
30 | extern void r5c_check_cached_full_stripe(struct r5conf *conf); | |
31 | extern struct md_sysfs_entry r5c_journal_mode; | |
70d466f7 SL |
32 | extern void r5c_update_on_rdev_error(struct mddev *mddev, |
33 | struct md_rdev *rdev); | |
ff875738 | 34 | extern bool r5c_big_stripe_cached(struct r5conf *conf, sector_t sect); |
d5d885fd | 35 | extern int r5l_start(struct r5l_log *log); |
ff875738 | 36 | |
3418d036 AP |
37 | extern struct dma_async_tx_descriptor * |
38 | ops_run_partial_parity(struct stripe_head *sh, struct raid5_percpu *percpu, | |
39 | struct dma_async_tx_descriptor *tx); | |
40 | extern int ppl_init_log(struct r5conf *conf); | |
41 | extern void ppl_exit_log(struct r5conf *conf); | |
42 | extern int ppl_write_stripe(struct r5conf *conf, struct stripe_head *sh); | |
43 | extern void ppl_write_stripe_run(struct r5conf *conf); | |
44 | extern void ppl_stripe_write_finished(struct stripe_head *sh); | |
6358c239 | 45 | extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add); |
1532d9e8 | 46 | extern void ppl_quiesce(struct r5conf *conf, int quiesce); |
f4bc0c81 | 47 | extern int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio); |
a596d086 | 48 | extern struct md_sysfs_entry ppl_write_hint; |
3418d036 | 49 | |
e254de6b SL |
50 | static inline bool raid5_has_log(struct r5conf *conf) |
51 | { | |
52 | return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags); | |
53 | } | |
54 | ||
3418d036 AP |
55 | static inline bool raid5_has_ppl(struct r5conf *conf) |
56 | { | |
57 | return test_bit(MD_HAS_PPL, &conf->mddev->flags); | |
58 | } | |
59 | ||
ff875738 AP |
60 | static inline int log_stripe(struct stripe_head *sh, struct stripe_head_state *s) |
61 | { | |
62 | struct r5conf *conf = sh->raid_conf; | |
63 | ||
64 | if (conf->log) { | |
65 | if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) { | |
66 | /* writing out phase */ | |
67 | if (s->waiting_extra_page) | |
68 | return 0; | |
69 | return r5l_write_stripe(conf->log, sh); | |
70 | } else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { | |
71 | /* caching phase */ | |
72 | return r5c_cache_data(conf->log, sh); | |
73 | } | |
3418d036 AP |
74 | } else if (raid5_has_ppl(conf)) { |
75 | return ppl_write_stripe(conf, sh); | |
ff875738 AP |
76 | } |
77 | ||
78 | return -EAGAIN; | |
79 | } | |
80 | ||
81 | static inline void log_stripe_write_finished(struct stripe_head *sh) | |
82 | { | |
83 | struct r5conf *conf = sh->raid_conf; | |
84 | ||
85 | if (conf->log) | |
86 | r5l_stripe_write_finished(sh); | |
3418d036 AP |
87 | else if (raid5_has_ppl(conf)) |
88 | ppl_stripe_write_finished(sh); | |
ff875738 AP |
89 | } |
90 | ||
91 | static inline void log_write_stripe_run(struct r5conf *conf) | |
92 | { | |
93 | if (conf->log) | |
94 | r5l_write_stripe_run(conf->log); | |
3418d036 AP |
95 | else if (raid5_has_ppl(conf)) |
96 | ppl_write_stripe_run(conf); | |
ff875738 AP |
97 | } |
98 | ||
1532d9e8 TM |
99 | static inline void log_flush_stripe_to_raid(struct r5conf *conf) |
100 | { | |
101 | if (conf->log) | |
102 | r5l_flush_stripe_to_raid(conf->log); | |
103 | else if (raid5_has_ppl(conf)) | |
104 | ppl_write_stripe_run(conf); | |
105 | } | |
106 | ||
107 | static inline int log_handle_flush_request(struct r5conf *conf, struct bio *bio) | |
108 | { | |
109 | int ret = -ENODEV; | |
110 | ||
111 | if (conf->log) | |
112 | ret = r5l_handle_flush_request(conf->log, bio); | |
113 | else if (raid5_has_ppl(conf)) | |
f4bc0c81 | 114 | ret = ppl_handle_flush_request(conf->log, bio); |
1532d9e8 TM |
115 | |
116 | return ret; | |
117 | } | |
118 | ||
119 | static inline void log_quiesce(struct r5conf *conf, int quiesce) | |
120 | { | |
121 | if (conf->log) | |
122 | r5l_quiesce(conf->log, quiesce); | |
123 | else if (raid5_has_ppl(conf)) | |
124 | ppl_quiesce(conf, quiesce); | |
125 | } | |
126 | ||
ff875738 AP |
127 | static inline void log_exit(struct r5conf *conf) |
128 | { | |
129 | if (conf->log) | |
130 | r5l_exit_log(conf); | |
3418d036 AP |
131 | else if (raid5_has_ppl(conf)) |
132 | ppl_exit_log(conf); | |
ff875738 AP |
133 | } |
134 | ||
845b9e22 AP |
135 | static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
136 | bool ppl) | |
ff875738 AP |
137 | { |
138 | if (journal_dev) | |
139 | return r5l_init_log(conf, journal_dev); | |
845b9e22 | 140 | else if (ppl) |
3418d036 | 141 | return ppl_init_log(conf); |
ff875738 AP |
142 | |
143 | return 0; | |
144 | } | |
145 | ||
6358c239 AP |
146 | static inline int log_modify(struct r5conf *conf, struct md_rdev *rdev, bool add) |
147 | { | |
148 | if (raid5_has_ppl(conf)) | |
149 | return ppl_modify_log(conf, rdev, add); | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
ff875738 | 154 | #endif |