1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 2
3 #include "bcachefs.h" 3 #include "bcachefs.h"
4 #include "journal_sb.h" 4 #include "journal_sb.h"
5 #include "darray.h" 5 #include "darray.h"
6 6
7 #include <linux/sort.h> 7 #include <linux/sort.h>
8 8
9 /* BCH_SB_FIELD_journal: */ 9 /* BCH_SB_FIELD_journal: */
10 10
11 static int u64_cmp(const void *_l, const void 11 static int u64_cmp(const void *_l, const void *_r)
12 { 12 {
13 const u64 *l = _l; 13 const u64 *l = _l;
14 const u64 *r = _r; 14 const u64 *r = _r;
15 15
16 return cmp_int(*l, *r); 16 return cmp_int(*l, *r);
17 } 17 }
18 18
19 static int bch2_sb_journal_validate(struct bch !! 19 static int bch2_sb_journal_validate(struct bch_sb *sb,
20 enum bch_valid !! 20 struct bch_sb_field *f,
>> 21 struct printbuf *err)
21 { 22 {
22 struct bch_sb_field_journal *journal = 23 struct bch_sb_field_journal *journal = field_to_type(f, journal);
23 struct bch_member m = bch2_sb_member_g 24 struct bch_member m = bch2_sb_member_get(sb, sb->dev_idx);
24 int ret = -BCH_ERR_invalid_sb_journal; 25 int ret = -BCH_ERR_invalid_sb_journal;
25 unsigned nr; 26 unsigned nr;
26 unsigned i; 27 unsigned i;
27 u64 *b; 28 u64 *b;
28 29
29 nr = bch2_nr_journal_buckets(journal); 30 nr = bch2_nr_journal_buckets(journal);
30 if (!nr) 31 if (!nr)
31 return 0; 32 return 0;
32 33
33 b = kmalloc_array(nr, sizeof(u64), GFP 34 b = kmalloc_array(nr, sizeof(u64), GFP_KERNEL);
34 if (!b) 35 if (!b)
35 return -BCH_ERR_ENOMEM_sb_jour 36 return -BCH_ERR_ENOMEM_sb_journal_validate;
36 37
37 for (i = 0; i < nr; i++) 38 for (i = 0; i < nr; i++)
38 b[i] = le64_to_cpu(journal->bu 39 b[i] = le64_to_cpu(journal->buckets[i]);
39 40
40 sort(b, nr, sizeof(u64), u64_cmp, NULL 41 sort(b, nr, sizeof(u64), u64_cmp, NULL);
41 42
42 if (!b[0]) { 43 if (!b[0]) {
43 prt_printf(err, "journal bucke 44 prt_printf(err, "journal bucket at sector 0");
44 goto err; 45 goto err;
45 } 46 }
46 47
47 if (b[0] < le16_to_cpu(m.first_bucket) 48 if (b[0] < le16_to_cpu(m.first_bucket)) {
48 prt_printf(err, "journal bucke 49 prt_printf(err, "journal bucket %llu before first bucket %u",
49 b[0], le16_to_cpu(m.fir 50 b[0], le16_to_cpu(m.first_bucket));
50 goto err; 51 goto err;
51 } 52 }
52 53
53 if (b[nr - 1] >= le64_to_cpu(m.nbucket 54 if (b[nr - 1] >= le64_to_cpu(m.nbuckets)) {
54 prt_printf(err, "journal bucke 55 prt_printf(err, "journal bucket %llu past end of device (nbuckets %llu)",
55 b[nr - 1], le64_to_cpu( 56 b[nr - 1], le64_to_cpu(m.nbuckets));
56 goto err; 57 goto err;
57 } 58 }
58 59
59 for (i = 0; i + 1 < nr; i++) 60 for (i = 0; i + 1 < nr; i++)
60 if (b[i] == b[i + 1]) { 61 if (b[i] == b[i + 1]) {
61 prt_printf(err, "dupli 62 prt_printf(err, "duplicate journal buckets %llu", b[i]);
62 goto err; 63 goto err;
63 } 64 }
64 65
65 ret = 0; 66 ret = 0;
66 err: 67 err:
67 kfree(b); 68 kfree(b);
68 return ret; 69 return ret;
69 } 70 }
70 71
71 static void bch2_sb_journal_to_text(struct pri 72 static void bch2_sb_journal_to_text(struct printbuf *out, struct bch_sb *sb,
72 struct bch 73 struct bch_sb_field *f)
73 { 74 {
74 struct bch_sb_field_journal *journal = 75 struct bch_sb_field_journal *journal = field_to_type(f, journal);
75 unsigned i, nr = bch2_nr_journal_bucke 76 unsigned i, nr = bch2_nr_journal_buckets(journal);
76 77
77 prt_printf(out, "Buckets: "); 78 prt_printf(out, "Buckets: ");
78 for (i = 0; i < nr; i++) 79 for (i = 0; i < nr; i++)
79 prt_printf(out, " %llu", le64_ 80 prt_printf(out, " %llu", le64_to_cpu(journal->buckets[i]));
80 prt_newline(out); 81 prt_newline(out);
81 } 82 }
82 83
83 const struct bch_sb_field_ops bch_sb_field_ops 84 const struct bch_sb_field_ops bch_sb_field_ops_journal = {
84 .validate = bch2_sb_journal_vali 85 .validate = bch2_sb_journal_validate,
85 .to_text = bch2_sb_journal_to_t 86 .to_text = bch2_sb_journal_to_text,
86 }; 87 };
87 88
88 struct u64_range { 89 struct u64_range {
89 u64 start; 90 u64 start;
90 u64 end; 91 u64 end;
91 }; 92 };
92 93
93 static int u64_range_cmp(const void *_l, const 94 static int u64_range_cmp(const void *_l, const void *_r)
94 { 95 {
95 const struct u64_range *l = _l; 96 const struct u64_range *l = _l;
96 const struct u64_range *r = _r; 97 const struct u64_range *r = _r;
97 98
98 return cmp_int(l->start, r->start); 99 return cmp_int(l->start, r->start);
99 } 100 }
100 101
101 static int bch2_sb_journal_v2_validate(struct !! 102 static int bch2_sb_journal_v2_validate(struct bch_sb *sb,
102 enum bch_valid !! 103 struct bch_sb_field *f,
>> 104 struct printbuf *err)
103 { 105 {
104 struct bch_sb_field_journal_v2 *journa 106 struct bch_sb_field_journal_v2 *journal = field_to_type(f, journal_v2);
105 struct bch_member m = bch2_sb_member_g 107 struct bch_member m = bch2_sb_member_get(sb, sb->dev_idx);
106 int ret = -BCH_ERR_invalid_sb_journal; 108 int ret = -BCH_ERR_invalid_sb_journal;
107 u64 sum = 0; <<
108 unsigned nr; 109 unsigned nr;
109 unsigned i; 110 unsigned i;
110 struct u64_range *b; 111 struct u64_range *b;
111 112
112 nr = bch2_sb_field_journal_v2_nr_entri 113 nr = bch2_sb_field_journal_v2_nr_entries(journal);
113 if (!nr) 114 if (!nr)
114 return 0; 115 return 0;
115 116
116 b = kmalloc_array(nr, sizeof(*b), GFP_ 117 b = kmalloc_array(nr, sizeof(*b), GFP_KERNEL);
117 if (!b) 118 if (!b)
118 return -BCH_ERR_ENOMEM_sb_jour 119 return -BCH_ERR_ENOMEM_sb_journal_v2_validate;
119 120
120 for (i = 0; i < nr; i++) { 121 for (i = 0; i < nr; i++) {
121 b[i].start = le64_to_cpu(journ 122 b[i].start = le64_to_cpu(journal->d[i].start);
122 b[i].end = b[i].start + le64_t 123 b[i].end = b[i].start + le64_to_cpu(journal->d[i].nr);
123 <<
124 if (b[i].end <= b[i].start) { <<
125 prt_printf(err, "journ <<
126 le64_to_cpu <<
127 le64_to_cpu <<
128 goto err; <<
129 } <<
130 <<
131 sum += le64_to_cpu(journal->d[ <<
132 } 124 }
133 125
134 sort(b, nr, sizeof(*b), u64_range_cmp, 126 sort(b, nr, sizeof(*b), u64_range_cmp, NULL);
135 127
136 if (!b[0].start) { 128 if (!b[0].start) {
137 prt_printf(err, "journal bucke 129 prt_printf(err, "journal bucket at sector 0");
138 goto err; 130 goto err;
139 } 131 }
140 132
141 if (b[0].start < le16_to_cpu(m.first_b 133 if (b[0].start < le16_to_cpu(m.first_bucket)) {
142 prt_printf(err, "journal bucke 134 prt_printf(err, "journal bucket %llu before first bucket %u",
143 b[0].start, le16_to_cpu 135 b[0].start, le16_to_cpu(m.first_bucket));
144 goto err; 136 goto err;
145 } 137 }
146 138
147 if (b[nr - 1].end > le64_to_cpu(m.nbuc 139 if (b[nr - 1].end > le64_to_cpu(m.nbuckets)) {
148 prt_printf(err, "journal bucke 140 prt_printf(err, "journal bucket %llu past end of device (nbuckets %llu)",
149 b[nr - 1].end - 1, le64 141 b[nr - 1].end - 1, le64_to_cpu(m.nbuckets));
150 goto err; 142 goto err;
151 } 143 }
152 144
153 for (i = 0; i + 1 < nr; i++) { 145 for (i = 0; i + 1 < nr; i++) {
154 if (b[i].end > b[i + 1].start) 146 if (b[i].end > b[i + 1].start) {
155 prt_printf(err, "dupli 147 prt_printf(err, "duplicate journal buckets in ranges %llu-%llu, %llu-%llu",
156 b[i].start, b[i 148 b[i].start, b[i].end, b[i + 1].start, b[i + 1].end);
157 goto err; 149 goto err;
158 } 150 }
159 } <<
160 <<
161 if (sum > UINT_MAX) { <<
162 prt_printf(err, "too many jour <<
163 goto err; <<
164 } 151 }
165 152
166 ret = 0; 153 ret = 0;
167 err: 154 err:
168 kfree(b); 155 kfree(b);
169 return ret; 156 return ret;
170 } 157 }
171 158
172 static void bch2_sb_journal_v2_to_text(struct 159 static void bch2_sb_journal_v2_to_text(struct printbuf *out, struct bch_sb *sb,
173 struct bch 160 struct bch_sb_field *f)
174 { 161 {
175 struct bch_sb_field_journal_v2 *journa 162 struct bch_sb_field_journal_v2 *journal = field_to_type(f, journal_v2);
176 unsigned i, nr = bch2_sb_field_journal 163 unsigned i, nr = bch2_sb_field_journal_v2_nr_entries(journal);
177 164
178 prt_printf(out, "Buckets: "); 165 prt_printf(out, "Buckets: ");
179 for (i = 0; i < nr; i++) 166 for (i = 0; i < nr; i++)
180 prt_printf(out, " %llu-%llu", 167 prt_printf(out, " %llu-%llu",
181 le64_to_cpu(journal->d[ 168 le64_to_cpu(journal->d[i].start),
182 le64_to_cpu(journal->d[ 169 le64_to_cpu(journal->d[i].start) + le64_to_cpu(journal->d[i].nr));
183 prt_newline(out); 170 prt_newline(out);
184 } 171 }
185 172
186 const struct bch_sb_field_ops bch_sb_field_ops 173 const struct bch_sb_field_ops bch_sb_field_ops_journal_v2 = {
187 .validate = bch2_sb_journal_v2_v 174 .validate = bch2_sb_journal_v2_validate,
188 .to_text = bch2_sb_journal_v2_t 175 .to_text = bch2_sb_journal_v2_to_text,
189 }; 176 };
190 177
191 int bch2_journal_buckets_to_sb(struct bch_fs * 178 int bch2_journal_buckets_to_sb(struct bch_fs *c, struct bch_dev *ca,
192 u64 *buckets, u 179 u64 *buckets, unsigned nr)
193 { 180 {
194 struct bch_sb_field_journal_v2 *j; 181 struct bch_sb_field_journal_v2 *j;
195 unsigned i, dst = 0, nr_compacted = 1; 182 unsigned i, dst = 0, nr_compacted = 1;
196 183
197 if (c) 184 if (c)
198 lockdep_assert_held(&c->sb_loc 185 lockdep_assert_held(&c->sb_lock);
199 186
200 if (!nr) { 187 if (!nr) {
201 bch2_sb_field_delete(&ca->disk 188 bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal);
202 bch2_sb_field_delete(&ca->disk 189 bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal_v2);
203 return 0; 190 return 0;
204 } 191 }
205 192
206 for (i = 0; i + 1 < nr; i++) 193 for (i = 0; i + 1 < nr; i++)
207 if (buckets[i] + 1 != buckets[ 194 if (buckets[i] + 1 != buckets[i + 1])
208 nr_compacted++; 195 nr_compacted++;
209 196
210 j = bch2_sb_field_resize(&ca->disk_sb, 197 j = bch2_sb_field_resize(&ca->disk_sb, journal_v2,
211 (sizeof(*j) + sizeof( 198 (sizeof(*j) + sizeof(j->d[0]) * nr_compacted) / sizeof(u64));
212 if (!j) 199 if (!j)
213 return -BCH_ERR_ENOSPC_sb_jour 200 return -BCH_ERR_ENOSPC_sb_journal;
214 201
215 bch2_sb_field_delete(&ca->disk_sb, BCH 202 bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal);
216 203
217 j->d[dst].start = cpu_to_le64(buckets[ 204 j->d[dst].start = cpu_to_le64(buckets[0]);
218 j->d[dst].nr = cpu_to_le64(1); 205 j->d[dst].nr = cpu_to_le64(1);
219 206
220 for (i = 1; i < nr; i++) { 207 for (i = 1; i < nr; i++) {
221 if (buckets[i] == buckets[i - 208 if (buckets[i] == buckets[i - 1] + 1) {
222 le64_add_cpu(&j->d[dst 209 le64_add_cpu(&j->d[dst].nr, 1);
223 } else { 210 } else {
224 dst++; 211 dst++;
225 j->d[dst].start = cpu_ 212 j->d[dst].start = cpu_to_le64(buckets[i]);
226 j->d[dst].nr = cpu_ 213 j->d[dst].nr = cpu_to_le64(1);
227 } 214 }
228 } 215 }
229 216
230 BUG_ON(dst + 1 != nr_compacted); 217 BUG_ON(dst + 1 != nr_compacted);
231 return 0; 218 return 0;
232 } 219 }
233 220
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