]>
Commit | Line | Data |
---|---|---|
ff875738 AP |
1 | #ifndef _RAID5_LOG_H |
2 | #define _RAID5_LOG_H | |
3 | ||
4 | extern int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev); | |
5 | extern void r5l_exit_log(struct r5conf *conf); | |
6 | extern int r5l_write_stripe(struct r5l_log *log, struct stripe_head *head_sh); | |
7 | extern void r5l_write_stripe_run(struct r5l_log *log); | |
8 | extern void r5l_flush_stripe_to_raid(struct r5l_log *log); | |
9 | extern void r5l_stripe_write_finished(struct stripe_head *sh); | |
10 | extern int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio); | |
11 | extern void r5l_quiesce(struct r5l_log *log, int state); | |
12 | extern bool r5l_log_disk_error(struct r5conf *conf); | |
13 | extern bool r5c_is_writeback(struct r5l_log *log); | |
14 | extern int | |
15 | r5c_try_caching_write(struct r5conf *conf, struct stripe_head *sh, | |
16 | struct stripe_head_state *s, int disks); | |
17 | extern void | |
18 | r5c_finish_stripe_write_out(struct r5conf *conf, struct stripe_head *sh, | |
19 | struct stripe_head_state *s); | |
20 | extern void r5c_release_extra_page(struct stripe_head *sh); | |
21 | extern void r5c_use_extra_page(struct stripe_head *sh); | |
22 | extern void r5l_wake_reclaim(struct r5l_log *log, sector_t space); | |
23 | extern void r5c_handle_cached_data_endio(struct r5conf *conf, | |
bd83d0a2 | 24 | struct stripe_head *sh, int disks); |
ff875738 AP |
25 | extern int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh); |
26 | extern void r5c_make_stripe_write_out(struct stripe_head *sh); | |
27 | extern void r5c_flush_cache(struct r5conf *conf, int num); | |
28 | extern void r5c_check_stripe_cache_usage(struct r5conf *conf); | |
29 | extern void r5c_check_cached_full_stripe(struct r5conf *conf); | |
30 | extern struct md_sysfs_entry r5c_journal_mode; | |
70d466f7 SL |
31 | extern void r5c_update_on_rdev_error(struct mddev *mddev, |
32 | struct md_rdev *rdev); | |
ff875738 AP |
33 | extern bool r5c_big_stripe_cached(struct r5conf *conf, sector_t sect); |
34 | ||
3418d036 AP |
35 | extern struct dma_async_tx_descriptor * |
36 | ops_run_partial_parity(struct stripe_head *sh, struct raid5_percpu *percpu, | |
37 | struct dma_async_tx_descriptor *tx); | |
38 | extern int ppl_init_log(struct r5conf *conf); | |
39 | extern void ppl_exit_log(struct r5conf *conf); | |
40 | extern int ppl_write_stripe(struct r5conf *conf, struct stripe_head *sh); | |
41 | extern void ppl_write_stripe_run(struct r5conf *conf); | |
42 | extern void ppl_stripe_write_finished(struct stripe_head *sh); | |
6358c239 | 43 | extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add); |
3418d036 AP |
44 | |
45 | static inline bool raid5_has_ppl(struct r5conf *conf) | |
46 | { | |
47 | return test_bit(MD_HAS_PPL, &conf->mddev->flags); | |
48 | } | |
49 | ||
ff875738 AP |
50 | static inline int log_stripe(struct stripe_head *sh, struct stripe_head_state *s) |
51 | { | |
52 | struct r5conf *conf = sh->raid_conf; | |
53 | ||
54 | if (conf->log) { | |
55 | if (!test_bit(STRIPE_R5C_CACHING, &sh->state)) { | |
56 | /* writing out phase */ | |
57 | if (s->waiting_extra_page) | |
58 | return 0; | |
59 | return r5l_write_stripe(conf->log, sh); | |
60 | } else if (test_bit(STRIPE_LOG_TRAPPED, &sh->state)) { | |
61 | /* caching phase */ | |
62 | return r5c_cache_data(conf->log, sh); | |
63 | } | |
3418d036 AP |
64 | } else if (raid5_has_ppl(conf)) { |
65 | return ppl_write_stripe(conf, sh); | |
ff875738 AP |
66 | } |
67 | ||
68 | return -EAGAIN; | |
69 | } | |
70 | ||
71 | static inline void log_stripe_write_finished(struct stripe_head *sh) | |
72 | { | |
73 | struct r5conf *conf = sh->raid_conf; | |
74 | ||
75 | if (conf->log) | |
76 | r5l_stripe_write_finished(sh); | |
3418d036 AP |
77 | else if (raid5_has_ppl(conf)) |
78 | ppl_stripe_write_finished(sh); | |
ff875738 AP |
79 | } |
80 | ||
81 | static inline void log_write_stripe_run(struct r5conf *conf) | |
82 | { | |
83 | if (conf->log) | |
84 | r5l_write_stripe_run(conf->log); | |
3418d036 AP |
85 | else if (raid5_has_ppl(conf)) |
86 | ppl_write_stripe_run(conf); | |
ff875738 AP |
87 | } |
88 | ||
89 | static inline void log_exit(struct r5conf *conf) | |
90 | { | |
91 | if (conf->log) | |
92 | r5l_exit_log(conf); | |
3418d036 AP |
93 | else if (raid5_has_ppl(conf)) |
94 | ppl_exit_log(conf); | |
ff875738 AP |
95 | } |
96 | ||
845b9e22 AP |
97 | static inline int log_init(struct r5conf *conf, struct md_rdev *journal_dev, |
98 | bool ppl) | |
ff875738 AP |
99 | { |
100 | if (journal_dev) | |
101 | return r5l_init_log(conf, journal_dev); | |
845b9e22 | 102 | else if (ppl) |
3418d036 | 103 | return ppl_init_log(conf); |
ff875738 AP |
104 | |
105 | return 0; | |
106 | } | |
107 | ||
6358c239 AP |
108 | static inline int log_modify(struct r5conf *conf, struct md_rdev *rdev, bool add) |
109 | { | |
110 | if (raid5_has_ppl(conf)) | |
111 | return ppl_modify_log(conf, rdev, add); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
ff875738 | 116 | #endif |