#include "bbpos.h"
#include "alloc_background.h"
#include "backpointers.h"
+#include "bkey_buf.h"
#include "btree_cache.h"
#include "btree_update.h"
#include "btree_update_interior.h"
/* verify that every backpointer has a corresponding alloc key */
int bch2_check_btree_backpointers(struct bch_fs *c)
{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret;
-
- ret = bch2_trans_run(c,
+ int ret = bch2_trans_run(c,
for_each_btree_key_commit(trans, iter,
BTREE_ID_backpointers, POS_MIN, 0, k,
NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
bch2_check_btree_backpointer(trans, &iter, k)));
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
return ret;
}
-struct bpos_level {
- unsigned level;
- struct bpos pos;
+static inline bool bkey_and_val_eq(struct bkey_s_c l, struct bkey_s_c r)
+{
+ return bpos_eq(l.k->p, r.k->p) &&
+ bkey_bytes(l.k) == bkey_bytes(r.k) &&
+ !memcmp(l.v, r.v, bkey_val_bytes(l.k));
+}
+
+struct extents_to_bp_state {
+ struct bpos bucket_start;
+ struct bpos bucket_end;
+ struct bkey_buf last_flushed;
};
static int check_bp_exists(struct btree_trans *trans,
+ struct extents_to_bp_state *s,
struct bpos bucket,
struct bch_backpointer bp,
- struct bkey_s_c orig_k,
- struct bpos bucket_start,
- struct bpos bucket_end,
- struct bpos_level *last_flushed)
+ struct bkey_s_c orig_k)
{
struct bch_fs *c = trans->c;
struct btree_iter bp_iter = { NULL };
struct printbuf buf = PRINTBUF;
struct bkey_s_c bp_k;
+ struct bkey_buf tmp;
int ret;
- if (bpos_lt(bucket, bucket_start) ||
- bpos_gt(bucket, bucket_end))
+ bch2_bkey_buf_init(&tmp);
+
+ if (bpos_lt(bucket, s->bucket_start) ||
+ bpos_gt(bucket, s->bucket_end))
return 0;
if (!bch2_dev_bucket_exists(c, bucket))
if (bp_k.k->type != KEY_TYPE_backpointer ||
memcmp(bkey_s_c_to_backpointer(bp_k).v, &bp, sizeof(bp))) {
- if (last_flushed->level != bp.level ||
- !bpos_eq(last_flushed->pos, orig_k.k->p)) {
+ bch2_bkey_buf_reassemble(&tmp, c, orig_k);
+
+ if (!bkey_and_val_eq(orig_k, bkey_i_to_s_c(s->last_flushed.k))) {
+ if (bp.level) {
+ bch2_trans_unlock(trans);
+ bch2_btree_interior_updates_flush(c);
+ }
+
ret = bch2_btree_write_buffer_flush_sync(trans);
if (ret)
goto err;
- last_flushed->level = bp.level;
- last_flushed->pos = orig_k.k->p;
+ bch2_bkey_buf_copy(&s->last_flushed, c, tmp.k);
ret = -BCH_ERR_transaction_restart_write_buffer_flush;
goto out;
}
err:
fsck_err:
bch2_trans_iter_exit(trans, &bp_iter);
+ bch2_bkey_buf_exit(&tmp, c);
printbuf_exit(&buf);
return ret;
missing:
prt_printf(&buf, "\nbp pos ");
bch2_bpos_to_text(&buf, bp_iter.pos);
- if (c->sb.version_upgrade_complete < bcachefs_metadata_version_backpointers ||
- c->opts.reconstruct_alloc ||
+ if (c->opts.reconstruct_alloc ||
fsck_err(c, ptr_to_missing_backpointer, "%s", buf.buf))
ret = bch2_bucket_backpointer_mod(trans, bucket, bp, orig_k, true);
}
static int check_extent_to_backpointers(struct btree_trans *trans,
+ struct extents_to_bp_state *s,
enum btree_id btree, unsigned level,
- struct bpos bucket_start,
- struct bpos bucket_end,
- struct bpos_level *last_flushed,
struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
bch2_extent_ptr_to_bp(c, btree, level,
k, p, &bucket_pos, &bp);
- ret = check_bp_exists(trans, bucket_pos, bp, k,
- bucket_start, bucket_end,
- last_flushed);
+ ret = check_bp_exists(trans, s, bucket_pos, bp, k);
if (ret)
return ret;
}
}
static int check_btree_root_to_backpointers(struct btree_trans *trans,
+ struct extents_to_bp_state *s,
enum btree_id btree_id,
- struct bpos bucket_start,
- struct bpos bucket_end,
- struct bpos_level *last_flushed,
int *level)
{
struct bch_fs *c = trans->c;
*level = b->c.level;
k = bkey_i_to_s_c(&b->key);
- ret = check_extent_to_backpointers(trans, btree_id, b->c.level + 1,
- bucket_start, bucket_end,
- last_flushed, k);
+ ret = check_extent_to_backpointers(trans, s, btree_id, b->c.level + 1, k);
err:
bch2_trans_iter_exit(trans, &iter);
return ret;
si_meminfo(&i);
mem_bytes = i.totalram * i.mem_unit;
- return div_u64(mem_bytes >> 1, btree_bytes(c));
+ return div_u64(mem_bytes >> 1, c->opts.btree_node_size);
}
static int bch2_get_btree_in_memory_pos(struct btree_trans *trans,
}
static int bch2_check_extents_to_backpointers_pass(struct btree_trans *trans,
- struct bpos bucket_start,
- struct bpos bucket_end)
+ struct extents_to_bp_state *s)
{
struct bch_fs *c = trans->c;
- struct btree_iter iter;
- enum btree_id btree_id;
- struct bkey_s_c k;
int ret = 0;
- for (btree_id = 0; btree_id < btree_id_nr_alive(c); btree_id++) {
- struct bpos_level last_flushed = { UINT_MAX, POS_MIN };
+ for (enum btree_id btree_id = 0;
+ btree_id < btree_id_nr_alive(c);
+ btree_id++) {
int level, depth = btree_type_has_ptrs(btree_id) ? 0 : 1;
ret = commit_do(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc,
- check_btree_root_to_backpointers(trans, btree_id,
- bucket_start, bucket_end,
- &last_flushed, &level));
+ check_btree_root_to_backpointers(trans, s, btree_id, &level));
if (ret)
return ret;
while (level >= depth) {
+ struct btree_iter iter;
bch2_trans_node_iter_init(trans, &iter, btree_id, POS_MIN, 0,
level,
BTREE_ITER_PREFETCH);
while (1) {
bch2_trans_begin(trans);
- k = bch2_btree_iter_peek(&iter);
+
+ struct bkey_s_c k = bch2_btree_iter_peek(&iter);
if (!k.k)
break;
ret = bkey_err(k) ?:
- check_extent_to_backpointers(trans, btree_id, level,
- bucket_start, bucket_end,
- &last_flushed, k) ?:
+ check_extent_to_backpointers(trans, s, btree_id, level, k) ?:
bch2_trans_commit(trans, NULL, NULL,
BCH_TRANS_COMMIT_no_enospc);
if (bch2_err_matches(ret, BCH_ERR_transaction_restart)) {
int bch2_check_extents_to_backpointers(struct bch_fs *c)
{
struct btree_trans *trans = bch2_trans_get(c);
- struct bpos start = POS_MIN, end;
+ struct extents_to_bp_state s = { .bucket_start = POS_MIN };
int ret;
+ bch2_bkey_buf_init(&s.last_flushed);
+ bkey_init(&s.last_flushed.k->k);
+
while (1) {
- ret = bch2_get_alloc_in_memory_pos(trans, start, &end);
+ ret = bch2_get_alloc_in_memory_pos(trans, s.bucket_start, &s.bucket_end);
if (ret)
break;
- if (bpos_eq(start, POS_MIN) && !bpos_eq(end, SPOS_MAX))
+ if ( bpos_eq(s.bucket_start, POS_MIN) &&
+ !bpos_eq(s.bucket_end, SPOS_MAX))
bch_verbose(c, "%s(): alloc info does not fit in ram, running in multiple passes with %zu nodes per pass",
__func__, btree_nodes_fit_in_ram(c));
- if (!bpos_eq(start, POS_MIN) || !bpos_eq(end, SPOS_MAX)) {
+ if (!bpos_eq(s.bucket_start, POS_MIN) ||
+ !bpos_eq(s.bucket_end, SPOS_MAX)) {
struct printbuf buf = PRINTBUF;
prt_str(&buf, "check_extents_to_backpointers(): ");
- bch2_bpos_to_text(&buf, start);
+ bch2_bpos_to_text(&buf, s.bucket_start);
prt_str(&buf, "-");
- bch2_bpos_to_text(&buf, end);
+ bch2_bpos_to_text(&buf, s.bucket_end);
bch_verbose(c, "%s", buf.buf);
printbuf_exit(&buf);
}
- ret = bch2_check_extents_to_backpointers_pass(trans, start, end);
- if (ret || bpos_eq(end, SPOS_MAX))
+ ret = bch2_check_extents_to_backpointers_pass(trans, &s);
+ if (ret || bpos_eq(s.bucket_end, SPOS_MAX))
break;
- start = bpos_successor(end);
+ s.bucket_start = bpos_successor(s.bucket_end);
}
bch2_trans_put(trans);
+ bch2_bkey_buf_exit(&s.last_flushed, c);
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
return ret;
}
struct bbpos start,
struct bbpos end)
{
- struct btree_iter iter;
- struct bkey_s_c k;
struct bpos last_flushed_pos = SPOS_MAX;
return for_each_btree_key_commit(trans, iter, BTREE_ID_backpointers,
}
bch2_trans_put(trans);
- if (ret)
- bch_err_fn(c, ret);
+ bch_err_fn(c, ret);
return ret;
}
projects / bcachefs-tools-debian / blobdiff