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authorKent Overstreet <kent.overstreet@linux.dev>2024-01-16 17:00:02 -0500
committerKent Overstreet <kent.overstreet@linux.dev>2024-01-16 17:17:23 -0500
commitb5fd066153c40a70a29caa1ea7987723ab687763 (patch)
tree6d43a8b0a90d549a54c65565ac96c92b3e84b594 /c_src/libbcachefs/migrate.c
parent06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff)
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source directories. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'c_src/libbcachefs/migrate.c')
-rw-r--r--c_src/libbcachefs/migrate.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/c_src/libbcachefs/migrate.c b/c_src/libbcachefs/migrate.c
deleted file mode 100644
index 5623cee3..00000000
--- 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);
-}