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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); |
3418d036 | 48 | |
e254de6b SL |
49 | static inline bool raid5_has_log(struct r5conf *conf) |
50 | { | |
51 | return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags); | |
52 | } | |
53 | ||
3418d036 AP |
54 | static inline bool raid5_has_ppl(struct r5conf *conf) |
55 | { | |
56 | return test_bit(MD_HAS_PPL, &conf->mddev->flags); | |
57 | } | |
58 | ||
ff875738 AP |
59 | static inline int log_stripe(struct stripe_head *sh, struct stripe_head_state *s) |
60 | { | |
61 | struct r5conf *conf = sh->raid_conf; | |
62 | ||
63 | if (conf->log) { | |
64 | if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) { | |
65 | /* writing out phase */ | |
66 | if (s->waiting_extra_page) | |
67 | return 0; | |
68 | return r5l_write_stripe(conf->log, sh); | |
69 | } else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { | |
70 | /* caching phase */ | |
71 | return r5c_cache_data(conf->log, sh); | |
72 | } | |
3418d036 AP |
73 | } else if (raid5_has_ppl(conf)) { |
74 | return ppl_write_stripe(conf, sh); | |
ff875738 AP |
75 | } |
76 | ||
77 | return -EAGAIN; | |
78 | } | |
79 | ||
80 | static inline void log_stripe_write_finished(struct stripe_head *sh) | |
81 | { | |
82 | struct r5conf *conf = sh->raid_conf; | |
83 | ||
84 | if (conf->log) | |
85 | r5l_stripe_write_finished(sh); | |
3418d036 AP |
86 | else if (raid5_has_ppl(conf)) |
87 | ppl_stripe_write_finished(sh); | |
ff875738 AP |
88 | } |
89 | ||
90 | static inline void log_write_stripe_run(struct r5conf *conf) | |
91 | { | |
92 | if (conf->log) | |
93 | r5l_write_stripe_run(conf->log); | |
3418d036 AP |
94 | else if (raid5_has_ppl(conf)) |
95 | ppl_write_stripe_run(conf); | |
ff875738 AP |
96 | } |
97 | ||
1532d9e8 TM |
98 | static inline void log_flush_stripe_to_raid(struct r5conf *conf) |
99 | { | |
100 | if (conf->log) | |
101 | r5l_flush_stripe_to_raid(conf->log); | |
102 | else if (raid5_has_ppl(conf)) | |
103 | ppl_write_stripe_run(conf); | |
104 | } | |
105 | ||
106 | static inline int log_handle_flush_request(struct r5conf *conf, struct bio *bio) | |
107 | { | |
108 | int ret = -ENODEV; | |
109 | ||
110 | if (conf->log) | |
111 | ret = r5l_handle_flush_request(conf->log, bio); | |
112 | else if (raid5_has_ppl(conf)) | |
f4bc0c81 | 113 | ret = ppl_handle_flush_request(conf->log, bio); |
1532d9e8 TM |
114 | |
115 | return ret; | |
116 | } | |
117 | ||
118 | static inline void log_quiesce(struct r5conf *conf, int quiesce) | |
119 | { | |
120 | if (conf->log) | |
121 | r5l_quiesce(conf->log, quiesce); | |
122 | else if (raid5_has_ppl(conf)) | |
123 | ppl_quiesce(conf, quiesce); | |
124 | } | |
125 | ||
ff875738 AP |
126 | static inline void log_exit(struct r5conf *conf) |
127 | { | |
128 | if (conf->log) | |
129 | r5l_exit_log(conf); | |
3418d036 AP |
130 | else if (raid5_has_ppl(conf)) |
131 | ppl_exit_log(conf); | |
ff875738 AP |
132 | } |
133 | ||
845b9e22 AP |
134 | static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
135 | bool ppl) | |
ff875738 AP |
136 | { |
137 | if (journal_dev) | |
138 | return r5l_init_log(conf, journal_dev); | |
845b9e22 | 139 | else if (ppl) |
3418d036 | 140 | return ppl_init_log(conf); |
ff875738 AP |
141 | |
142 | return 0; | |
143 | } | |
144 | ||
6358c239 AP |
145 | static inline int log_modify(struct r5conf *conf, struct md_rdev *rdev, bool add) |
146 | { | |
147 | if (raid5_has_ppl(conf)) | |
148 | return ppl_modify_log(conf, rdev, add); | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
ff875738 | 153 | #endif |