1 // SPDX-License-Identifier: GPL-2.0 1
2
3 #include "bcachefs.h"
4 #include "journal_sb.h"
5 #include "darray.h"
6
7 #include <linux/sort.h>
8
9 /* BCH_SB_FIELD_journal: */
10
11 static int u64_cmp(const void *_l, const void
12 {
13 const u64 *l = _l;
14 const u64 *r = _r;
15
16 return cmp_int(*l, *r);
17 }
18
19 static int bch2_sb_journal_validate(struct bch
20 enum bch_valid
21 {
22 struct bch_sb_field_journal *journal =
23 struct bch_member m = bch2_sb_member_g
24 int ret = -BCH_ERR_invalid_sb_journal;
25 unsigned nr;
26 unsigned i;
27 u64 *b;
28
29 nr = bch2_nr_journal_buckets(journal);
30 if (!nr)
31 return 0;
32
33 b = kmalloc_array(nr, sizeof(u64), GFP
34 if (!b)
35 return -BCH_ERR_ENOMEM_sb_jour
36
37 for (i = 0; i < nr; i++)
38 b[i] = le64_to_cpu(journal->bu
39
40 sort(b, nr, sizeof(u64), u64_cmp, NULL
41
42 if (!b[0]) {
43 prt_printf(err, "journal bucke
44 goto err;
45 }
46
47 if (b[0] < le16_to_cpu(m.first_bucket)
48 prt_printf(err, "journal bucke
49 b[0], le16_to_cpu(m.fir
50 goto err;
51 }
52
53 if (b[nr - 1] >= le64_to_cpu(m.nbucket
54 prt_printf(err, "journal bucke
55 b[nr - 1], le64_to_cpu(
56 goto err;
57 }
58
59 for (i = 0; i + 1 < nr; i++)
60 if (b[i] == b[i + 1]) {
61 prt_printf(err, "dupli
62 goto err;
63 }
64
65 ret = 0;
66 err:
67 kfree(b);
68 return ret;
69 }
70
71 static void bch2_sb_journal_to_text(struct pri
72 struct bch
73 {
74 struct bch_sb_field_journal *journal =
75 unsigned i, nr = bch2_nr_journal_bucke
76
77 prt_printf(out, "Buckets: ");
78 for (i = 0; i < nr; i++)
79 prt_printf(out, " %llu", le64_
80 prt_newline(out);
81 }
82
83 const struct bch_sb_field_ops bch_sb_field_ops
84 .validate = bch2_sb_journal_vali
85 .to_text = bch2_sb_journal_to_t
86 };
87
88 struct u64_range {
89 u64 start;
90 u64 end;
91 };
92
93 static int u64_range_cmp(const void *_l, const
94 {
95 const struct u64_range *l = _l;
96 const struct u64_range *r = _r;
97
98 return cmp_int(l->start, r->start);
99 }
100
101 static int bch2_sb_journal_v2_validate(struct
102 enum bch_valid
103 {
104 struct bch_sb_field_journal_v2 *journa
105 struct bch_member m = bch2_sb_member_g
106 int ret = -BCH_ERR_invalid_sb_journal;
107 unsigned nr;
108 unsigned i;
109 struct u64_range *b;
110
111 nr = bch2_sb_field_journal_v2_nr_entri
112 if (!nr)
113 return 0;
114
115 b = kmalloc_array(nr, sizeof(*b), GFP_
116 if (!b)
117 return -BCH_ERR_ENOMEM_sb_jour
118
119 for (i = 0; i < nr; i++) {
120 b[i].start = le64_to_cpu(journ
121 b[i].end = b[i].start + le64_t
122 }
123
124 sort(b, nr, sizeof(*b), u64_range_cmp,
125
126 if (!b[0].start) {
127 prt_printf(err, "journal bucke
128 goto err;
129 }
130
131 if (b[0].start < le16_to_cpu(m.first_b
132 prt_printf(err, "journal bucke
133 b[0].start, le16_to_cpu
134 goto err;
135 }
136
137 if (b[nr - 1].end > le64_to_cpu(m.nbuc
138 prt_printf(err, "journal bucke
139 b[nr - 1].end - 1, le64
140 goto err;
141 }
142
143 for (i = 0; i + 1 < nr; i++) {
144 if (b[i].end > b[i + 1].start)
145 prt_printf(err, "dupli
146 b[i].start, b[i
147 goto err;
148 }
149 }
150
151 ret = 0;
152 err:
153 kfree(b);
154 return ret;
155 }
156
157 static void bch2_sb_journal_v2_to_text(struct
158 struct bch
159 {
160 struct bch_sb_field_journal_v2 *journa
161 unsigned i, nr = bch2_sb_field_journal
162
163 prt_printf(out, "Buckets: ");
164 for (i = 0; i < nr; i++)
165 prt_printf(out, " %llu-%llu",
166 le64_to_cpu(journal->d[
167 le64_to_cpu(journal->d[
168 prt_newline(out);
169 }
170
171 const struct bch_sb_field_ops bch_sb_field_ops
172 .validate = bch2_sb_journal_v2_v
173 .to_text = bch2_sb_journal_v2_t
174 };
175
176 int bch2_journal_buckets_to_sb(struct bch_fs *
177 u64 *buckets, u
178 {
179 struct bch_sb_field_journal_v2 *j;
180 unsigned i, dst = 0, nr_compacted = 1;
181
182 if (c)
183 lockdep_assert_held(&c->sb_loc
184
185 if (!nr) {
186 bch2_sb_field_delete(&ca->disk
187 bch2_sb_field_delete(&ca->disk
188 return 0;
189 }
190
191 for (i = 0; i + 1 < nr; i++)
192 if (buckets[i] + 1 != buckets[
193 nr_compacted++;
194
195 j = bch2_sb_field_resize(&ca->disk_sb,
196 (sizeof(*j) + sizeof(
197 if (!j)
198 return -BCH_ERR_ENOSPC_sb_jour
199
200 bch2_sb_field_delete(&ca->disk_sb, BCH
201
202 j->d[dst].start = cpu_to_le64(buckets[
203 j->d[dst].nr = cpu_to_le64(1);
204
205 for (i = 1; i < nr; i++) {
206 if (buckets[i] == buckets[i -
207 le64_add_cpu(&j->d[dst
208 } else {
209 dst++;
210 j->d[dst].start = cpu_
211 j->d[dst].nr = cpu_
212 }
213 }
214
215 BUG_ON(dst + 1 != nr_compacted);
216 return 0;
217 }
218
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