summaryrefslogtreecommitdiff
path: root/fs/bcachefs/lru.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/bcachefs/lru.c')
-rw-r--r--fs/bcachefs/lru.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/fs/bcachefs/lru.c b/fs/bcachefs/lru.c
deleted file mode 100644
index 57b5b3263b08..000000000000
--- a/fs/bcachefs/lru.c
+++ /dev/null
@@ -1,223 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include "bcachefs.h"
-#include "alloc_background.h"
-#include "bkey_buf.h"
-#include "btree_iter.h"
-#include "btree_update.h"
-#include "btree_write_buffer.h"
-#include "ec.h"
-#include "error.h"
-#include "lru.h"
-#include "recovery.h"
-
-/* KEY_TYPE_lru is obsolete: */
-int bch2_lru_validate(struct bch_fs *c, struct bkey_s_c k,
- struct bkey_validate_context from)
-{
- int ret = 0;
-
- bkey_fsck_err_on(!lru_pos_time(k.k->p),
- c, lru_entry_at_time_0,
- "lru entry at time=0");
-fsck_err:
- return ret;
-}
-
-void bch2_lru_to_text(struct printbuf *out, struct bch_fs *c,
- struct bkey_s_c k)
-{
- const struct bch_lru *lru = bkey_s_c_to_lru(k).v;
-
- prt_printf(out, "idx %llu", le64_to_cpu(lru->idx));
-}
-
-void bch2_lru_pos_to_text(struct printbuf *out, struct bpos lru)
-{
- prt_printf(out, "%llu:%llu -> %llu:%llu",
- lru_pos_id(lru),
- lru_pos_time(lru),
- u64_to_bucket(lru.offset).inode,
- u64_to_bucket(lru.offset).offset);
-}
-
-static int __bch2_lru_set(struct btree_trans *trans, u16 lru_id,
- u64 dev_bucket, u64 time, bool set)
-{
- return time
- ? bch2_btree_bit_mod_buffered(trans, BTREE_ID_lru,
- lru_pos(lru_id, dev_bucket, time), set)
- : 0;
-}
-
-int bch2_lru_del(struct btree_trans *trans, u16 lru_id, u64 dev_bucket, u64 time)
-{
- return __bch2_lru_set(trans, lru_id, dev_bucket, time, KEY_TYPE_deleted);
-}
-
-int bch2_lru_set(struct btree_trans *trans, u16 lru_id, u64 dev_bucket, u64 time)
-{
- return __bch2_lru_set(trans, lru_id, dev_bucket, time, KEY_TYPE_set);
-}
-
-int __bch2_lru_change(struct btree_trans *trans,
- u16 lru_id, u64 dev_bucket,
- u64 old_time, u64 new_time)
-{
- if (old_time == new_time)
- return 0;
-
- return bch2_lru_del(trans, lru_id, dev_bucket, old_time) ?:
- bch2_lru_set(trans, lru_id, dev_bucket, new_time);
-}
-
-static const char * const bch2_lru_types[] = {
-#define x(n) #n,
- BCH_LRU_TYPES()
-#undef x
- NULL
-};
-
-int bch2_lru_check_set(struct btree_trans *trans,
- u16 lru_id,
- u64 dev_bucket,
- u64 time,
- struct bkey_s_c referring_k,
- struct bkey_buf *last_flushed)
-{
- struct bch_fs *c = trans->c;
- struct printbuf buf = PRINTBUF;
- struct btree_iter lru_iter;
- struct bkey_s_c lru_k =
- bch2_bkey_get_iter(trans, &lru_iter, BTREE_ID_lru,
- lru_pos(lru_id, dev_bucket, time), 0);
- int ret = bkey_err(lru_k);
- if (ret)
- return ret;
-
- if (lru_k.k->type != KEY_TYPE_set) {
- ret = bch2_btree_write_buffer_maybe_flush(trans, referring_k, last_flushed);
- if (ret)
- goto err;
-
- if (fsck_err(trans, alloc_key_to_missing_lru_entry,
- "missing %s lru entry\n%s",
- bch2_lru_types[lru_type(lru_k)],
- (bch2_bkey_val_to_text(&buf, c, referring_k), buf.buf))) {
- ret = bch2_lru_set(trans, lru_id, dev_bucket, time);
- if (ret)
- goto err;
- }
- }
-err:
-fsck_err:
- bch2_trans_iter_exit(trans, &lru_iter);
- printbuf_exit(&buf);
- return ret;
-}
-
-static struct bbpos lru_pos_to_bp(struct bkey_s_c lru_k)
-{
- enum bch_lru_type type = lru_type(lru_k);
-
- switch (type) {
- case BCH_LRU_read:
- case BCH_LRU_fragmentation:
- return BBPOS(BTREE_ID_alloc, u64_to_bucket(lru_k.k->p.offset));
- case BCH_LRU_stripes:
- return BBPOS(BTREE_ID_stripes, POS(0, lru_k.k->p.offset));
- default:
- BUG();
- }
-}
-
-static u64 bkey_lru_type_idx(struct bch_fs *c,
- enum bch_lru_type type,
- struct bkey_s_c k)
-{
- struct bch_alloc_v4 a_convert;
- const struct bch_alloc_v4 *a;
-
- switch (type) {
- case BCH_LRU_read:
- a = bch2_alloc_to_v4(k, &a_convert);
- return alloc_lru_idx_read(*a);
- case BCH_LRU_fragmentation: {
- a = bch2_alloc_to_v4(k, &a_convert);
-
- guard(rcu)();
- struct bch_dev *ca = bch2_dev_rcu_noerror(c, k.k->p.inode);
- return ca
- ? alloc_lru_idx_fragmentation(*a, ca)
- : 0;
- }
- case BCH_LRU_stripes:
- return k.k->type == KEY_TYPE_stripe
- ? stripe_lru_pos(bkey_s_c_to_stripe(k).v)
- : 0;
- default:
- BUG();
- }
-}
-
-static int bch2_check_lru_key(struct btree_trans *trans,
- struct btree_iter *lru_iter,
- struct bkey_s_c lru_k,
- struct bkey_buf *last_flushed)
-{
- struct bch_fs *c = trans->c;
- struct printbuf buf1 = PRINTBUF;
- struct printbuf buf2 = PRINTBUF;
-
- struct bbpos bp = lru_pos_to_bp(lru_k);
-
- struct btree_iter iter;
- struct bkey_s_c k = bch2_bkey_get_iter(trans, &iter, bp.btree, bp.pos, 0);
- int ret = bkey_err(k);
- if (ret)
- goto err;
-
- enum bch_lru_type type = lru_type(lru_k);
- u64 idx = bkey_lru_type_idx(c, type, k);
-
- if (lru_pos_time(lru_k.k->p) != idx) {
- ret = bch2_btree_write_buffer_maybe_flush(trans, lru_k, last_flushed);
- if (ret)
- goto err;
-
- if (fsck_err(trans, lru_entry_bad,
- "incorrect lru entry: lru %s time %llu\n"
- "%s\n"
- "for %s",
- bch2_lru_types[type],
- lru_pos_time(lru_k.k->p),
- (bch2_bkey_val_to_text(&buf1, c, lru_k), buf1.buf),
- (bch2_bkey_val_to_text(&buf2, c, k), buf2.buf)))
- ret = bch2_btree_bit_mod_buffered(trans, BTREE_ID_lru, lru_iter->pos, false);
- }
-err:
-fsck_err:
- bch2_trans_iter_exit(trans, &iter);
- printbuf_exit(&buf2);
- printbuf_exit(&buf1);
- return ret;
-}
-
-int bch2_check_lrus(struct bch_fs *c)
-{
- struct bkey_buf last_flushed;
-
- bch2_bkey_buf_init(&last_flushed);
- bkey_init(&last_flushed.k->k);
-
- int ret = bch2_trans_run(c,
- for_each_btree_key_commit(trans, iter,
- BTREE_ID_lru, POS_MIN, BTREE_ITER_prefetch, k,
- NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
- bch2_check_lru_key(trans, &iter, k, &last_flushed)));
-
- bch2_bkey_buf_exit(&last_flushed, c);
- bch_err_fn(c, ret);
- return ret;
-
-}
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-30 14:17:26 +0000