1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_ALLOC_FOREGROUND_H
3 #define _BCACHEFS_ALLOC_FOREGROUND_H
4
5 #include "bcachefs.h"
6 #include "alloc_types.h"
7 #include "extents.h"
8 #include "sb-members.h"
9
10 #include <linux/hash.h>
11
12 struct bkey;
13 struct bch_dev;
14 struct bch_fs;
15 struct bch_devs_List;
16
17 extern const char * const bch2_watermarks[];
18
19 void bch2_reset_alloc_cursors(struct bch_fs *);
20
21 struct dev_alloc_list {
22 unsigned nr;
23 u8 devs[BCH_SB_MEMBERS_MAX];
24 };
25
26 struct dev_alloc_list bch2_dev_alloc_list(struct bch_fs *,
27 struct dev_stripe_state *,
28 struct bch_devs_mask *);
29 void bch2_dev_stripe_increment(struct bch_dev *, struct dev_stripe_state *);
30
31 long bch2_bucket_alloc_new_fs(struct bch_dev *);
32
ob_dev(struct bch_fs * c,struct open_bucket * ob)33 static inline struct bch_dev *ob_dev(struct bch_fs *c, struct open_bucket *ob)
34 {
35 return bch2_dev_have_ref(c, ob->dev);
36 }
37
38 struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *,
39 enum bch_watermark, enum bch_data_type,
40 struct closure *);
41
ob_push(struct bch_fs * c,struct open_buckets * obs,struct open_bucket * ob)42 static inline void ob_push(struct bch_fs *c, struct open_buckets *obs,
43 struct open_bucket *ob)
44 {
45 BUG_ON(obs->nr >= ARRAY_SIZE(obs->v));
46
47 obs->v[obs->nr++] = ob - c->open_buckets;
48 }
49
50 #define open_bucket_for_each(_c, _obs, _ob, _i) \
51 for ((_i) = 0; \
52 (_i) < (_obs)->nr && \
53 ((_ob) = (_c)->open_buckets + (_obs)->v[_i], true); \
54 (_i)++)
55
ec_open_bucket(struct bch_fs * c,struct open_buckets * obs)56 static inline struct open_bucket *ec_open_bucket(struct bch_fs *c,
57 struct open_buckets *obs)
58 {
59 struct open_bucket *ob;
60 unsigned i;
61
62 open_bucket_for_each(c, obs, ob, i)
63 if (ob->ec)
64 return ob;
65
66 return NULL;
67 }
68
69 void bch2_open_bucket_write_error(struct bch_fs *,
70 struct open_buckets *, unsigned);
71
72 void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *);
73
bch2_open_bucket_put(struct bch_fs * c,struct open_bucket * ob)74 static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob)
75 {
76 if (atomic_dec_and_test(&ob->pin))
77 __bch2_open_bucket_put(c, ob);
78 }
79
bch2_open_buckets_put(struct bch_fs * c,struct open_buckets * ptrs)80 static inline void bch2_open_buckets_put(struct bch_fs *c,
81 struct open_buckets *ptrs)
82 {
83 struct open_bucket *ob;
84 unsigned i;
85
86 open_bucket_for_each(c, ptrs, ob, i)
87 bch2_open_bucket_put(c, ob);
88 ptrs->nr = 0;
89 }
90
bch2_alloc_sectors_done_inlined(struct bch_fs * c,struct write_point * wp)91 static inline void bch2_alloc_sectors_done_inlined(struct bch_fs *c, struct write_point *wp)
92 {
93 struct open_buckets ptrs = { .nr = 0 }, keep = { .nr = 0 };
94 struct open_bucket *ob;
95 unsigned i;
96
97 open_bucket_for_each(c, &wp->ptrs, ob, i)
98 ob_push(c, !ob->sectors_free ? &ptrs : &keep, ob);
99 wp->ptrs = keep;
100
101 mutex_unlock(&wp->lock);
102
103 bch2_open_buckets_put(c, &ptrs);
104 }
105
bch2_open_bucket_get(struct bch_fs * c,struct write_point * wp,struct open_buckets * ptrs)106 static inline void bch2_open_bucket_get(struct bch_fs *c,
107 struct write_point *wp,
108 struct open_buckets *ptrs)
109 {
110 struct open_bucket *ob;
111 unsigned i;
112
113 open_bucket_for_each(c, &wp->ptrs, ob, i) {
114 ob->data_type = wp->data_type;
115 atomic_inc(&ob->pin);
116 ob_push(c, ptrs, ob);
117 }
118 }
119
open_bucket_hashslot(struct bch_fs * c,unsigned dev,u64 bucket)120 static inline open_bucket_idx_t *open_bucket_hashslot(struct bch_fs *c,
121 unsigned dev, u64 bucket)
122 {
123 return c->open_buckets_hash +
124 (jhash_3words(dev, bucket, bucket >> 32, 0) &
125 (OPEN_BUCKETS_COUNT - 1));
126 }
127
bch2_bucket_is_open(struct bch_fs * c,unsigned dev,u64 bucket)128 static inline bool bch2_bucket_is_open(struct bch_fs *c, unsigned dev, u64 bucket)
129 {
130 open_bucket_idx_t slot = *open_bucket_hashslot(c, dev, bucket);
131
132 while (slot) {
133 struct open_bucket *ob = &c->open_buckets[slot];
134
135 if (ob->dev == dev && ob->bucket == bucket)
136 return true;
137
138 slot = ob->hash;
139 }
140
141 return false;
142 }
143
bch2_bucket_is_open_safe(struct bch_fs * c,unsigned dev,u64 bucket)144 static inline bool bch2_bucket_is_open_safe(struct bch_fs *c, unsigned dev, u64 bucket)
145 {
146 bool ret;
147
148 if (bch2_bucket_is_open(c, dev, bucket))
149 return true;
150
151 spin_lock(&c->freelist_lock);
152 ret = bch2_bucket_is_open(c, dev, bucket);
153 spin_unlock(&c->freelist_lock);
154
155 return ret;
156 }
157
158 enum bch_write_flags;
159 int bch2_bucket_alloc_set_trans(struct btree_trans *, struct open_buckets *,
160 struct dev_stripe_state *, struct bch_devs_mask *,
161 unsigned, unsigned *, bool *, enum bch_write_flags,
162 enum bch_data_type, enum bch_watermark,
163 struct closure *);
164
165 int bch2_alloc_sectors_start_trans(struct btree_trans *,
166 unsigned, unsigned,
167 struct write_point_specifier,
168 struct bch_devs_list *,
169 unsigned, unsigned,
170 enum bch_watermark,
171 enum bch_write_flags,
172 struct closure *,
173 struct write_point **);
174
175 struct bch_extent_ptr bch2_ob_ptr(struct bch_fs *, struct open_bucket *);
176
177 /*
178 * Append pointers to the space we just allocated to @k, and mark @sectors space
179 * as allocated out of @ob
180 */
181 static inline void
bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs * c,struct write_point * wp,struct bkey_i * k,unsigned sectors,bool cached)182 bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs *c, struct write_point *wp,
183 struct bkey_i *k, unsigned sectors,
184 bool cached)
185 {
186 struct open_bucket *ob;
187 unsigned i;
188
189 BUG_ON(sectors > wp->sectors_free);
190 wp->sectors_free -= sectors;
191 wp->sectors_allocated += sectors;
192
193 open_bucket_for_each(c, &wp->ptrs, ob, i) {
194 struct bch_dev *ca = ob_dev(c, ob);
195 struct bch_extent_ptr ptr = bch2_ob_ptr(c, ob);
196
197 ptr.cached = cached ||
198 (!ca->mi.durability &&
199 wp->data_type == BCH_DATA_user);
200
201 bch2_bkey_append_ptr(k, ptr);
202
203 BUG_ON(sectors > ob->sectors_free);
204 ob->sectors_free -= sectors;
205 }
206 }
207
208 void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *,
209 struct bkey_i *, unsigned, bool);
210 void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *);
211
212 void bch2_open_buckets_stop(struct bch_fs *c, struct bch_dev *, bool);
213
writepoint_hashed(unsigned long v)214 static inline struct write_point_specifier writepoint_hashed(unsigned long v)
215 {
216 return (struct write_point_specifier) { .v = v | 1 };
217 }
218
writepoint_ptr(struct write_point * wp)219 static inline struct write_point_specifier writepoint_ptr(struct write_point *wp)
220 {
221 return (struct write_point_specifier) { .v = (unsigned long) wp };
222 }
223
224 void bch2_fs_allocator_foreground_init(struct bch_fs *);
225
226 void bch2_open_bucket_to_text(struct printbuf *, struct bch_fs *, struct open_bucket *);
227 void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *, struct bch_dev *);
228 void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *);
229
230 void bch2_write_points_to_text(struct printbuf *, struct bch_fs *);
231
232 void bch2_fs_alloc_debug_to_text(struct printbuf *, struct bch_fs *);
233 void bch2_dev_alloc_debug_to_text(struct printbuf *, struct bch_dev *);
234
235 void __bch2_wait_on_allocator(struct bch_fs *, struct closure *);
bch2_wait_on_allocator(struct bch_fs * c,struct closure * cl)236 static inline void bch2_wait_on_allocator(struct bch_fs *c, struct closure *cl)
237 {
238 if (cl->closure_get_happened)
239 __bch2_wait_on_allocator(c, cl);
240 }
241
242 #endif /* _BCACHEFS_ALLOC_FOREGROUND_H */
243