1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _RAID5_LOG_H |
3 | #define _RAID5_LOG_H |
4 | |
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 (struct stripe_head *sh); |
20 | void (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); |
29 | extern struct md_sysfs_entry r5c_journal_mode; |
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); |
33 | |
34 | struct dma_async_tx_descriptor * |
35 | ops_run_partial_parity(struct stripe_head *sh, struct raid5_percpu *percpu, |
36 | struct dma_async_tx_descriptor *tx); |
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); |
44 | int ppl_handle_flush_request(struct bio *bio); |
45 | extern struct md_sysfs_entry ppl_write_hint; |
46 | |
47 | static inline bool raid5_has_log(struct r5conf *conf) |
48 | { |
49 | return test_bit(MD_HAS_JOURNAL, &conf->mddev->flags); |
50 | } |
51 | |
52 | static inline bool raid5_has_ppl(struct r5conf *conf) |
53 | { |
54 | return test_bit(MD_HAS_PPL, &conf->mddev->flags); |
55 | } |
56 | |
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(log: conf->log, head_sh: sh); |
67 | } else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { |
68 | /* caching phase */ |
69 | return r5c_cache_data(log: conf->log, sh); |
70 | } |
71 | } else if (raid5_has_ppl(conf)) { |
72 | return ppl_write_stripe(conf, sh); |
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); |
84 | else if (raid5_has_ppl(conf)) |
85 | ppl_stripe_write_finished(sh); |
86 | } |
87 | |
88 | static inline void log_write_stripe_run(struct r5conf *conf) |
89 | { |
90 | if (conf->log) |
91 | r5l_write_stripe_run(log: conf->log); |
92 | else if (raid5_has_ppl(conf)) |
93 | ppl_write_stripe_run(conf); |
94 | } |
95 | |
96 | static inline void log_flush_stripe_to_raid(struct r5conf *conf) |
97 | { |
98 | if (conf->log) |
99 | r5l_flush_stripe_to_raid(log: 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(log: conf->log, bio); |
110 | else if (raid5_has_ppl(conf)) |
111 | ret = ppl_handle_flush_request(bio); |
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(log: conf->log, quiesce); |
120 | else if (raid5_has_ppl(conf)) |
121 | ppl_quiesce(conf, quiesce); |
122 | } |
123 | |
124 | static inline void log_exit(struct r5conf *conf) |
125 | { |
126 | if (conf->log) |
127 | r5l_exit_log(conf); |
128 | else if (raid5_has_ppl(conf)) |
129 | ppl_exit_log(conf); |
130 | } |
131 | |
132 | static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
133 | bool ppl) |
134 | { |
135 | if (journal_dev) |
136 | return r5l_init_log(conf, rdev: journal_dev); |
137 | else if (ppl) |
138 | return ppl_init_log(conf); |
139 | |
140 | return 0; |
141 | } |
142 | |
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 | |
151 | #endif |
152 | |