Move c_src dirs back to toplevel

[bcachefs-tools-debian] / c_src / libbcachefs / migrate.c

diff --git a/c_src/libbcachefs/migrate.c b/c_src/libbcachefs/migrate.c
deleted file mode 100644 (file)
index 5623cee..0000000
--- a/c_src/libbcachefs/migrate.c
+++ /dev/null
@@ -1,176 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Code for moving data off a device.
- */
-
-#include "bcachefs.h"
-#include "bkey_buf.h"
-#include "btree_update.h"
-#include "btree_update_interior.h"
-#include "buckets.h"
-#include "errcode.h"
-#include "extents.h"
-#include "io_write.h"
-#include "journal.h"
-#include "keylist.h"
-#include "migrate.h"
-#include "move.h"
-#include "replicas.h"
-#include "super-io.h"
-
-static int drop_dev_ptrs(struct bch_fs *c, struct bkey_s k,
-                        unsigned dev_idx, int flags, bool metadata)
-{
-       unsigned replicas = metadata ? c->opts.metadata_replicas : c->opts.data_replicas;
-       unsigned lost = metadata ? BCH_FORCE_IF_METADATA_LOST : BCH_FORCE_IF_DATA_LOST;
-       unsigned degraded = metadata ? BCH_FORCE_IF_METADATA_DEGRADED : BCH_FORCE_IF_DATA_DEGRADED;
-       unsigned nr_good;
-
-       bch2_bkey_drop_device(k, dev_idx);
-
-       nr_good = bch2_bkey_durability(c, k.s_c);
-       if ((!nr_good && !(flags & lost)) ||
-           (nr_good < replicas && !(flags & degraded)))
-               return -EINVAL;
-
-       return 0;
-}
-
-static int bch2_dev_usrdata_drop_key(struct btree_trans *trans,
-                                    struct btree_iter *iter,
-                                    struct bkey_s_c k,
-                                    unsigned dev_idx,
-                                    int flags)
-{
-       struct bch_fs *c = trans->c;
-       struct bkey_i *n;
-       int ret;
-
-       if (!bch2_bkey_has_device_c(k, dev_idx))
-               return 0;
-
-       n = bch2_bkey_make_mut(trans, iter, &k, BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE);
-       ret = PTR_ERR_OR_ZERO(n);
-       if (ret)
-               return ret;
-
-       ret = drop_dev_ptrs(c, bkey_i_to_s(n), dev_idx, flags, false);
-       if (ret)
-               return ret;
-
-       /*
-        * If the new extent no longer has any pointers, bch2_extent_normalize()
-        * will do the appropriate thing with it (turning it into a
-        * KEY_TYPE_error key, or just a discard if it was a cached extent)
-        */
-       bch2_extent_normalize(c, bkey_i_to_s(n));
-
-       /*
-        * Since we're not inserting through an extent iterator
-        * (BTREE_ITER_ALL_SNAPSHOTS iterators aren't extent iterators),
-        * we aren't using the extent overwrite path to delete, we're
-        * just using the normal key deletion path:
-        */
-       if (bkey_deleted(&n->k))
-               n->k.size = 0;
-       return 0;
-}
-
-static int bch2_dev_usrdata_drop(struct bch_fs *c, unsigned dev_idx, int flags)
-{
-       struct btree_trans *trans = bch2_trans_get(c);
-       enum btree_id id;
-       int ret = 0;
-
-       for (id = 0; id < BTREE_ID_NR; id++) {
-               if (!btree_type_has_ptrs(id))
-                       continue;
-
-               ret = for_each_btree_key_commit(trans, iter, id, POS_MIN,
-                               BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,
-                               NULL, NULL, BCH_TRANS_COMMIT_no_enospc,
-                       bch2_dev_usrdata_drop_key(trans, &iter, k, dev_idx, flags));
-               if (ret)
-                       break;
-       }
-
-       bch2_trans_put(trans);
-
-       return ret;
-}
-
-static int bch2_dev_metadata_drop(struct bch_fs *c, unsigned dev_idx, int flags)
-{
-       struct btree_trans *trans;
-       struct btree_iter iter;
-       struct closure cl;
-       struct btree *b;
-       struct bkey_buf k;
-       unsigned id;
-       int ret;
-
-       /* don't handle this yet: */
-       if (flags & BCH_FORCE_IF_METADATA_LOST)
-               return -EINVAL;
-
-       trans = bch2_trans_get(c);
-       bch2_bkey_buf_init(&k);
-       closure_init_stack(&cl);
-
-       for (id = 0; id < BTREE_ID_NR; id++) {
-               bch2_trans_node_iter_init(trans, &iter, id, POS_MIN, 0, 0,
-                                         BTREE_ITER_PREFETCH);
-retry:
-               ret = 0;
-               while (bch2_trans_begin(trans),
-                      (b = bch2_btree_iter_peek_node(&iter)) &&
-                      !(ret = PTR_ERR_OR_ZERO(b))) {
-                       if (!bch2_bkey_has_device_c(bkey_i_to_s_c(&b->key), dev_idx))
-                               goto next;
-
-                       bch2_bkey_buf_copy(&k, c, &b->key);
-
-                       ret = drop_dev_ptrs(c, bkey_i_to_s(k.k),
-                                           dev_idx, flags, true);
-                       if (ret) {
-                               bch_err(c, "Cannot drop device without losing data");
-                               break;
-                       }
-
-                       ret = bch2_btree_node_update_key(trans, &iter, b, k.k, 0, false);
-                       if (bch2_err_matches(ret, BCH_ERR_transaction_restart)) {
-                               ret = 0;
-                               continue;
-                       }
-
-                       bch_err_msg(c, ret, "updating btree node key");
-                       if (ret)
-                               break;
-next:
-                       bch2_btree_iter_next_node(&iter);
-               }
-               if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
-                       goto retry;
-
-               bch2_trans_iter_exit(trans, &iter);
-
-               if (ret)
-                       goto err;
-       }
-
-       bch2_btree_interior_updates_flush(c);
-       ret = 0;
-err:
-       bch2_bkey_buf_exit(&k, c);
-       bch2_trans_put(trans);
-
-       BUG_ON(bch2_err_matches(ret, BCH_ERR_transaction_restart));
-
-       return ret;
-}
-
-int bch2_dev_data_drop(struct bch_fs *c, unsigned dev_idx, int flags)
-{
-       return bch2_dev_usrdata_drop(c, dev_idx, flags) ?:
-               bch2_dev_metadata_drop(c, dev_idx, flags);
-}