+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-
-#include "bcachefs.h"
-#include "journal_sb.h"
-#include "darray.h"
-
-#include <linux/sort.h>
-
-/* BCH_SB_FIELD_journal: */
-
-static int u64_cmp(const void *_l, const void *_r)
-{
- const u64 *l = _l;
- const u64 *r = _r;
-
- return cmp_int(*l, *r);
-}
-
-static int bch2_sb_journal_validate(struct bch_sb *sb,
- struct bch_sb_field *f,
- struct printbuf *err)
-{
- struct bch_sb_field_journal *journal = field_to_type(f, journal);
- struct bch_member m = bch2_sb_member_get(sb, sb->dev_idx);
- int ret = -BCH_ERR_invalid_sb_journal;
- unsigned nr;
- unsigned i;
- u64 *b;
-
- nr = bch2_nr_journal_buckets(journal);
- if (!nr)
- return 0;
-
- b = kmalloc_array(nr, sizeof(u64), GFP_KERNEL);
- if (!b)
- return -BCH_ERR_ENOMEM_sb_journal_validate;
-
- for (i = 0; i < nr; i++)
- b[i] = le64_to_cpu(journal->buckets[i]);
-
- sort(b, nr, sizeof(u64), u64_cmp, NULL);
-
- if (!b[0]) {
- prt_printf(err, "journal bucket at sector 0");
- goto err;
- }
-
- if (b[0] < le16_to_cpu(m.first_bucket)) {
- prt_printf(err, "journal bucket %llu before first bucket %u",
- b[0], le16_to_cpu(m.first_bucket));
- goto err;
- }
-
- if (b[nr - 1] >= le64_to_cpu(m.nbuckets)) {
- prt_printf(err, "journal bucket %llu past end of device (nbuckets %llu)",
- b[nr - 1], le64_to_cpu(m.nbuckets));
- goto err;
- }
-
- for (i = 0; i + 1 < nr; i++)
- if (b[i] == b[i + 1]) {
- prt_printf(err, "duplicate journal buckets %llu", b[i]);
- goto err;
- }
-
- ret = 0;
-err:
- kfree(b);
- return ret;
-}
-
-static void bch2_sb_journal_to_text(struct printbuf *out, struct bch_sb *sb,
- struct bch_sb_field *f)
-{
- struct bch_sb_field_journal *journal = field_to_type(f, journal);
- unsigned i, nr = bch2_nr_journal_buckets(journal);
-
- prt_printf(out, "Buckets: ");
- for (i = 0; i < nr; i++)
- prt_printf(out, " %llu", le64_to_cpu(journal->buckets[i]));
- prt_newline(out);
-}
-
-const struct bch_sb_field_ops bch_sb_field_ops_journal = {
- .validate = bch2_sb_journal_validate,
- .to_text = bch2_sb_journal_to_text,
-};
-
-struct u64_range {
- u64 start;
- u64 end;
-};
-
-static int u64_range_cmp(const void *_l, const void *_r)
-{
- const struct u64_range *l = _l;
- const struct u64_range *r = _r;
-
- return cmp_int(l->start, r->start);
-}
-
-static int bch2_sb_journal_v2_validate(struct bch_sb *sb,
- struct bch_sb_field *f,
- struct printbuf *err)
-{
- struct bch_sb_field_journal_v2 *journal = field_to_type(f, journal_v2);
- struct bch_member m = bch2_sb_member_get(sb, sb->dev_idx);
- int ret = -BCH_ERR_invalid_sb_journal;
- unsigned nr;
- unsigned i;
- struct u64_range *b;
-
- nr = bch2_sb_field_journal_v2_nr_entries(journal);
- if (!nr)
- return 0;
-
- b = kmalloc_array(nr, sizeof(*b), GFP_KERNEL);
- if (!b)
- return -BCH_ERR_ENOMEM_sb_journal_v2_validate;
-
- for (i = 0; i < nr; i++) {
- b[i].start = le64_to_cpu(journal->d[i].start);
- b[i].end = b[i].start + le64_to_cpu(journal->d[i].nr);
- }
-
- sort(b, nr, sizeof(*b), u64_range_cmp, NULL);
-
- if (!b[0].start) {
- prt_printf(err, "journal bucket at sector 0");
- goto err;
- }
-
- if (b[0].start < le16_to_cpu(m.first_bucket)) {
- prt_printf(err, "journal bucket %llu before first bucket %u",
- b[0].start, le16_to_cpu(m.first_bucket));
- goto err;
- }
-
- if (b[nr - 1].end > le64_to_cpu(m.nbuckets)) {
- prt_printf(err, "journal bucket %llu past end of device (nbuckets %llu)",
- b[nr - 1].end - 1, le64_to_cpu(m.nbuckets));
- goto err;
- }
-
- for (i = 0; i + 1 < nr; i++) {
- if (b[i].end > b[i + 1].start) {
- prt_printf(err, "duplicate journal buckets in ranges %llu-%llu, %llu-%llu",
- b[i].start, b[i].end, b[i + 1].start, b[i + 1].end);
- goto err;
- }
- }
-
- ret = 0;
-err:
- kfree(b);
- return ret;
-}
-
-static void bch2_sb_journal_v2_to_text(struct printbuf *out, struct bch_sb *sb,
- struct bch_sb_field *f)
-{
- struct bch_sb_field_journal_v2 *journal = field_to_type(f, journal_v2);
- unsigned i, nr = bch2_sb_field_journal_v2_nr_entries(journal);
-
- prt_printf(out, "Buckets: ");
- for (i = 0; i < nr; i++)
- prt_printf(out, " %llu-%llu",
- le64_to_cpu(journal->d[i].start),
- le64_to_cpu(journal->d[i].start) + le64_to_cpu(journal->d[i].nr));
- prt_newline(out);
-}
-
-const struct bch_sb_field_ops bch_sb_field_ops_journal_v2 = {
- .validate = bch2_sb_journal_v2_validate,
- .to_text = bch2_sb_journal_v2_to_text,
-};
-
-int bch2_journal_buckets_to_sb(struct bch_fs *c, struct bch_dev *ca,
- u64 *buckets, unsigned nr)
-{
- struct bch_sb_field_journal_v2 *j;
- unsigned i, dst = 0, nr_compacted = 1;
-
- if (c)
- lockdep_assert_held(&c->sb_lock);
-
- if (!nr) {
- bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal);
- bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal_v2);
- return 0;
- }
-
- for (i = 0; i + 1 < nr; i++)
- if (buckets[i] + 1 != buckets[i + 1])
- nr_compacted++;
-
- j = bch2_sb_field_resize(&ca->disk_sb, journal_v2,
- (sizeof(*j) + sizeof(j->d[0]) * nr_compacted) / sizeof(u64));
- if (!j)
- return -BCH_ERR_ENOSPC_sb_journal;
-
- bch2_sb_field_delete(&ca->disk_sb, BCH_SB_FIELD_journal);
-
- j->d[dst].start = cpu_to_le64(buckets[0]);
- j->d[dst].nr = cpu_to_le64(1);
-
- for (i = 1; i < nr; i++) {
- if (buckets[i] == buckets[i - 1] + 1) {
- le64_add_cpu(&j->d[dst].nr, 1);
- } else {
- dst++;
- j->d[dst].start = cpu_to_le64(buckets[i]);
- j->d[dst].nr = cpu_to_le64(1);
- }
- }
-
- BUG_ON(dst + 1 != nr_compacted);
- return 0;
-}
projects / bcachefs-tools-debian / blobdiff