bch2_trans_init(&trans, c, 0, 0);
- for_each_btree_key(&trans, iter, BTREE_ID_alloc, POS_MIN,
- BTREE_ITER_PREFETCH, k, ret) {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL|
- BTREE_INSERT_LAZY_RW,
- bch2_check_alloc_to_lru_ref(&trans, &iter));
- if (ret)
- break;
- }
- bch2_trans_iter_exit(&trans, &iter);
+ for_each_btree_key_commit(&trans, iter, BTREE_ID_alloc,
+ POS_MIN, BTREE_ITER_PREFETCH, k,
+ NULL, NULL, BTREE_INSERT_NOFAIL|BTREE_INSERT_LAZY_RW,
+ bch2_check_alloc_to_lru_ref(&trans, &iter));
bch2_trans_exit(&trans);
return ret < 0 ? ret : 0;
return ret;
}
-static bool gc_btree_gens_key(struct bch_fs *c, struct bkey_s_c k)
+static int gc_btree_gens_key(struct btree_trans *trans,
+ struct btree_iter *iter,
+ struct bkey_s_c k)
{
+ struct bch_fs *c = trans->c;
struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
const struct bch_extent_ptr *ptr;
+ struct bkey_i *u;
+ int ret;
percpu_down_read(&c->mark_lock);
bkey_for_each_ptr(ptrs, ptr) {
if (ptr_stale(ca, ptr) > 16) {
percpu_up_read(&c->mark_lock);
- return true;
+ goto update;
}
}
*gen = ptr->gen;
}
percpu_up_read(&c->mark_lock);
+ return 0;
+update:
+ u = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ ret = PTR_ERR_OR_ZERO(u);
+ if (ret)
+ return ret;
- return false;
-}
-
-/*
- * For recalculating oldest gen, we only need to walk keys in leaf nodes; btree
- * node pointers currently never have cached pointers that can become stale:
- */
-static int bch2_gc_btree_gens(struct btree_trans *trans, enum btree_id btree_id)
-{
- struct bch_fs *c = trans->c;
- struct btree_iter iter;
- struct bkey_s_c k;
- struct bkey_buf sk;
- int ret = 0, commit_err = 0;
-
- bch2_bkey_buf_init(&sk);
-
- bch2_trans_iter_init(trans, &iter, btree_id, POS_MIN,
- BTREE_ITER_PREFETCH|
- BTREE_ITER_NOT_EXTENTS|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- while ((bch2_trans_begin(trans),
- k = bch2_btree_iter_peek(&iter)).k) {
- ret = bkey_err(k);
-
- if (ret == -EINTR)
- continue;
- if (ret)
- break;
-
- c->gc_gens_pos = iter.pos;
-
- if (gc_btree_gens_key(c, k) && !commit_err) {
- bch2_bkey_buf_reassemble(&sk, c, k);
- bch2_extent_normalize(c, bkey_i_to_s(sk.k));
-
- commit_err =
- bch2_trans_update(trans, &iter, sk.k, 0) ?:
- bch2_trans_commit(trans, NULL, NULL,
- BTREE_INSERT_NOWAIT|
- BTREE_INSERT_NOFAIL);
- if (commit_err == -EINTR) {
- commit_err = 0;
- continue;
- }
- }
-
- bch2_btree_iter_advance(&iter);
- }
- bch2_trans_iter_exit(trans, &iter);
-
- bch2_bkey_buf_exit(&sk, c);
+ bkey_reassemble(u, k);
- return ret;
+ bch2_extent_normalize(c, bkey_i_to_s(u));
+ return bch2_trans_update(trans, iter, u, 0);
}
-static int bch2_alloc_write_oldest_gen(struct btree_trans *trans, struct btree_iter *iter)
+static int bch2_alloc_write_oldest_gen(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k)
{
struct bch_dev *ca = bch_dev_bkey_exists(trans->c, iter->pos.inode);
- struct bkey_s_c k;
struct bch_alloc_v4 a;
struct bkey_i_alloc_v4 *a_mut;
int ret;
- k = bch2_btree_iter_peek_slot(iter);
- ret = bkey_err(k);
- if (ret)
- return ret;
-
bch2_alloc_to_v4(k, &a);
if (a.oldest_gen == ca->oldest_gen[iter->pos.offset])
for (i = 0; i < BTREE_ID_NR; i++)
if ((1 << i) & BTREE_ID_HAS_PTRS) {
+ struct btree_iter iter;
+ struct bkey_s_c k;
+
c->gc_gens_btree = i;
c->gc_gens_pos = POS_MIN;
- ret = bch2_gc_btree_gens(&trans, i);
+ ret = for_each_btree_key_commit(&trans, iter, i,
+ POS_MIN,
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_NOFAIL,
+ gc_btree_gens_key(&trans, &iter, k));
if (ret) {
bch_err(c, "error recalculating oldest_gen: %i", ret);
goto err;
}
}
- for_each_btree_key(&trans, iter, BTREE_ID_alloc, POS_MIN,
- BTREE_ITER_PREFETCH, k, ret) {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL,
- bch2_alloc_write_oldest_gen(&trans, &iter));
- if (ret) {
- bch_err(c, "error writing oldest_gen: %i", ret);
- break;
- }
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_alloc,
+ POS_MIN,
+ BTREE_ITER_PREFETCH,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_NOFAIL,
+ bch2_alloc_write_oldest_gen(&trans, &iter, k));
+ if (ret) {
+ bch_err(c, "error writing oldest_gen: %i", ret);
+ goto err;
}
- bch2_trans_iter_exit(&trans, &iter);
c->gc_gens_btree = 0;
c->gc_gens_pos = POS_MIN;
return k;
}
+#define for_each_btree_key2(_trans, _iter, _btree_id, \
+ _start, _flags, _k, _do) \
+({ \
+ int _ret = 0; \
+ \
+ bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \
+ (_start), (_flags)); \
+ \
+ do { \
+ bch2_trans_begin(_trans); \
+ (_k) = bch2_btree_iter_peek_type(&(_iter), (_flags)); \
+ if (!(_k).k) { \
+ _ret = 0; \
+ break; \
+ } \
+ \
+ _ret = bkey_err(_k) ?: (_do); \
+ if (!_ret) \
+ bch2_btree_iter_advance(&(_iter)); \
+ } while (_ret == 0 || _ret == -EINTR); \
+ \
+ bch2_trans_iter_exit((_trans), &(_iter)); \
+ _ret; \
+})
+
+#define for_each_btree_key_commit(_trans, _iter, _btree_id, \
+ _start, _iter_flags, _k, \
+ _disk_res, _journal_seq, _commit_flags,\
+ _do) \
+ for_each_btree_key2(_trans, _iter, _btree_id, _start, _iter_flags, _k,\
+ (_do) ?: bch2_trans_commit(_trans, (_disk_res),\
+ (_journal_seq), (_commit_flags)))
+
#define for_each_btree_key(_trans, _iter, _btree_id, \
_start, _flags, _k, _ret) \
for (bch2_trans_iter_init((_trans), &(_iter), (_btree_id), \
static int check_inode(struct btree_trans *trans,
struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_inode_unpacked *prev,
struct snapshots_seen *s,
bool full)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct bch_inode_unpacked u;
bool do_update = false;
int ret;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
ret = check_key_has_snapshot(trans, iter, k);
if (ret < 0)
goto err;
}
if (do_update) {
- ret = write_inode(trans, &u, iter->pos.snapshot);
+ ret = __write_inode(trans, &u, iter->pos.snapshot);
if (ret)
bch_err(c, "error in fsck: error %i "
"updating inode", ret);
struct btree_iter iter;
struct bch_inode_unpacked prev = { 0 };
struct snapshots_seen s;
+ struct bkey_s_c k;
int ret;
snapshots_seen_init(&s);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_inodes, POS_MIN,
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_inode(&trans, &iter, &prev, &s, full));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_inodes,
+ POS_MIN,
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_inode(&trans, &iter, k, &prev, &s, full));
bch2_trans_exit(&trans);
snapshots_seen_exit(&s);
}
static int check_extent(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct inode_walker *inode,
struct snapshots_seen *s)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct inode_walker_entry *i;
struct printbuf buf = PRINTBUF;
struct bpos equiv;
int ret = 0;
-peek:
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- goto out;
-
- ret = bkey_err(k);
- if (ret)
- goto err;
ret = check_key_has_snapshot(trans, iter, k);
if (ret) {
* it shouldn't be but we need to fix the new i_sectors check
* code and delete the old bch2_count_inode_sectors() first
*/
- goto peek;
+ return -EINTR;
}
#if 0
if (bkey_cmp(prev.k->k.p, bkey_start_pos(k.k)) > 0) {
struct snapshots_seen s;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret = 0;
#if 0
bch_verbose(c, "checking extents");
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_extents,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_extent(&trans, &iter, &w, &s));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_extents,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_extent(&trans, &iter, k, &w, &s));
#if 0
bch2_bkey_buf_exit(&prev, c);
#endif
}
static int check_dirent(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_hash_info *hash_info,
struct inode_walker *dir,
struct inode_walker *target,
struct snapshots_seen *s)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
struct bkey_s_c_dirent d;
struct inode_walker_entry *i;
struct printbuf buf = PRINTBUF;
struct bpos equiv;
int ret = 0;
-peek:
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- goto out;
-
- ret = bkey_err(k);
- if (ret)
- goto err;
ret = check_key_has_snapshot(trans, iter, k);
if (ret) {
if (!iter->path->should_be_locked) {
/* hack: see check_extent() */
- goto peek;
+ return -EINTR;
}
ret = __walk_inode(trans, dir, equiv);
struct bch_hash_info hash_info;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret = 0;
bch_verbose(c, "checking dirents");
snapshots_seen_init(&s);
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_dirents,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_dirent(&trans, &iter, &hash_info,
- &dir, &target, &s));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_dirents,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_dirent(&trans, &iter, k, &hash_info, &dir, &target, &s));
bch2_trans_exit(&trans);
snapshots_seen_exit(&s);
}
static int check_xattr(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k,
struct bch_hash_info *hash_info,
struct inode_walker *inode)
{
struct bch_fs *c = trans->c;
- struct bkey_s_c k;
int ret;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
ret = check_key_has_snapshot(trans, iter, k);
if (ret)
return ret;
struct bch_hash_info hash_info;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret = 0;
bch_verbose(c, "checking xattrs");
bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_xattrs,
- POS(BCACHEFS_ROOT_INO, 0),
- BTREE_ITER_INTENT|
- BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
-
- do {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_xattr(&trans, &iter, &hash_info,
- &inode));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_xattrs,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ NULL, NULL,
+ BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_xattr(&trans, &iter, k, &hash_info, &inode));
bch2_trans_exit(&trans);
}
static int bch2_fs_quota_read_inode(struct btree_trans *trans,
- struct btree_iter *iter)
+ struct btree_iter *iter,
+ struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
struct bch_inode_unpacked u;
struct bch_subvolume subvolume;
- struct bkey_s_c k;
int ret;
- k = bch2_btree_iter_peek(iter);
- ret = bkey_err(k);
- if (ret)
- return ret;
-
- if (!k.k)
- return 1;
-
ret = bch2_snapshot_get_subvol(trans, k.k->p.snapshot, &subvolume);
if (ret)
return ret;
struct bch_memquota_type *q;
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret;
mutex_lock(&c->sb_lock);
bch2_trans_init(&trans, c, 0, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_inodes, POS_MIN,
+ ret = for_each_btree_key2(&trans, iter, BTREE_ID_inodes,
+ POS_MIN,
BTREE_ITER_INTENT|
BTREE_ITER_PREFETCH|
- BTREE_ITER_ALL_SNAPSHOTS);
- do {
- ret = lockrestart_do(&trans,
- bch2_fs_quota_read_inode(&trans, &iter));
- } while (!ret);
- bch2_trans_iter_exit(&trans, &iter);
+ BTREE_ITER_ALL_SNAPSHOTS,
+ k,
+ bch2_fs_quota_read_inode(&trans, &iter, k));
+ if (ret)
+ bch_err(c, "err reading inodes in quota init: %i", ret);
bch2_trans_exit(&trans);
- return ret < 0 ? ret : 0;
+ return ret;
}
/* Enable/disable/delete quotas for an entire filesystem: */
if (!id)
return 0;
- ret = lockrestart_do(trans, snapshot_lookup(trans, id, &v));
+ ret = snapshot_lookup(trans, id, &v);
if (ret == -ENOENT)
bch_err(trans->c, "snapshot node %u not found", id);
if (ret)
return !BCH_SNAPSHOT_DELETED(&v);
}
-static int bch2_snapshot_set_equiv(struct btree_trans *trans,
- struct bkey_s_c_snapshot snap)
+static int bch2_snapshot_set_equiv(struct btree_trans *trans, struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
unsigned i, nr_live = 0, live_idx = 0;
- u32 id = snap.k->p.offset, child[2] = {
- [0] = le32_to_cpu(snap.v->children[0]),
- [1] = le32_to_cpu(snap.v->children[1])
- };
+ struct bkey_s_c_snapshot snap;
+ u32 id = k.k->p.offset, child[2];
+
+ if (k.k->type != KEY_TYPE_snapshot)
+ return 0;
+
+ snap = bkey_s_c_to_snapshot(k);
+
+ child[0] = le32_to_cpu(snap.v->children[0]);
+ child[1] = le32_to_cpu(snap.v->children[1]);
for (i = 0; i < 2; i++) {
int ret = snapshot_live(trans, child[i]);
return 0;
}
-static int bch2_snapshots_set_equiv(struct btree_trans *trans)
-{
- struct btree_iter iter;
- struct bkey_s_c k;
- int ret;
-
- for_each_btree_key(trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k, ret) {
- if (k.k->type != KEY_TYPE_snapshot)
- continue;
-
- ret = bch2_snapshot_set_equiv(trans, bkey_s_c_to_snapshot(k));
- if (ret)
- break;
- }
- bch2_trans_iter_exit(trans, &iter);
-
- if (ret)
- bch_err(trans->c, "error in bch2_snapshots_set_equiv: %i", ret);
-
- return ret;
-}
-
/* fsck: */
static int check_snapshot(struct btree_trans *trans,
- struct btree_iter *iter)
+ struct btree_iter *iter,
+ struct bkey_s_c k)
{
struct bch_fs *c = trans->c;
struct bkey_s_c_snapshot s;
struct bch_subvolume subvol;
struct bch_snapshot v;
- struct bkey_s_c k;
struct printbuf buf = PRINTBUF;
bool should_have_subvol;
u32 i, id;
int ret = 0;
- k = bch2_btree_iter_peek(iter);
- if (!k.k)
- return 0;
-
- ret = bkey_err(k);
- if (ret)
- return ret;
-
if (k.k->type != KEY_TYPE_snapshot)
return 0;
s = bkey_s_c_to_snapshot(k);
id = le32_to_cpu(s.v->parent);
if (id) {
- ret = lockrestart_do(trans, snapshot_lookup(trans, id, &v));
+ ret = snapshot_lookup(trans, id, &v);
if (ret == -ENOENT)
bch_err(c, "snapshot with nonexistent parent:\n %s",
(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf));
for (i = 0; i < 2 && s.v->children[i]; i++) {
id = le32_to_cpu(s.v->children[i]);
- ret = lockrestart_do(trans, snapshot_lookup(trans, id, &v));
+ ret = snapshot_lookup(trans, id, &v);
if (ret == -ENOENT)
bch_err(c, "snapshot node %llu has nonexistent child %u",
s.k->p.offset, id);
if (should_have_subvol) {
id = le32_to_cpu(s.v->subvol);
- ret = lockrestart_do(trans, bch2_subvolume_get(trans, id, 0, false, &subvol));
+ ret = bch2_subvolume_get(trans, id, 0, false, &subvol);
if (ret == -ENOENT)
bch_err(c, "snapshot points to nonexistent subvolume:\n %s",
(bch2_bkey_val_to_text(&buf, c, s.s_c), buf.buf));
{
struct btree_trans trans;
struct btree_iter iter;
+ struct bkey_s_c k;
int ret;
bch2_trans_init(&trans, c, 0, 0);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_snapshots,
- POS_MIN, BTREE_ITER_PREFETCH);
-
- do {
- ret = commit_do(&trans, NULL, NULL,
- BTREE_INSERT_LAZY_RW|
- BTREE_INSERT_NOFAIL,
- check_snapshot(&trans, &iter));
- if (ret)
- break;
- } while (bch2_btree_iter_advance(&iter));
- bch2_trans_iter_exit(&trans, &iter);
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_snapshots,
+ POS(BCACHEFS_ROOT_INO, 0),
+ BTREE_ITER_PREFETCH, k,
+ NULL, NULL, BTREE_INSERT_LAZY_RW|BTREE_INSERT_NOFAIL,
+ check_snapshot(&trans, &iter, k));
if (ret)
bch_err(c, "error %i checking snapshots", ret);
bch2_trans_init(&trans, c, 0, 0);
- for_each_btree_key(&trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k, ret) {
- if (bkey_cmp(k.k->p, POS(0, U32_MAX)) > 0)
- break;
-
- if (k.k->type != KEY_TYPE_snapshot)
- continue;
-
- ret = bch2_mark_snapshot(&trans, bkey_s_c_null, k, 0) ?:
- bch2_snapshot_set_equiv(&trans, bkey_s_c_to_snapshot(k));
- if (ret)
- break;
- }
- bch2_trans_iter_exit(&trans, &iter);
+ for_each_btree_key2(&trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
+ bch2_mark_snapshot(&trans, bkey_s_c_null, k, 0) ?:
+ bch2_snapshot_set_equiv(&trans, k));
bch2_trans_exit(&trans);
return ret;
}
+static int bch2_delete_redundant_snapshot(struct btree_trans *trans, struct btree_iter *iter,
+ struct bkey_s_c k)
+{
+ struct bkey_s_c_snapshot snap;
+ u32 children[2];
+ int ret;
+
+ if (k.k->type != KEY_TYPE_snapshot)
+ return 0;
+
+ snap = bkey_s_c_to_snapshot(k);
+ if (BCH_SNAPSHOT_DELETED(snap.v) ||
+ BCH_SNAPSHOT_SUBVOL(snap.v))
+ return 0;
+
+ children[0] = le32_to_cpu(snap.v->children[0]);
+ children[1] = le32_to_cpu(snap.v->children[1]);
+
+ ret = snapshot_live(trans, children[0]) ?:
+ snapshot_live(trans, children[1]);
+ if (ret < 0)
+ return ret;
+
+ if (!ret)
+ return bch2_snapshot_node_set_deleted(trans, k.k->p.offset);
+ return 0;
+}
+
int bch2_delete_dead_snapshots(struct bch_fs *c)
{
struct btree_trans trans;
struct bkey_s_c k;
struct bkey_s_c_snapshot snap;
snapshot_id_list deleted = { 0 };
- u32 i, id, children[2];
+ u32 i, id;
int ret = 0;
if (!test_bit(BCH_FS_HAVE_DELETED_SNAPSHOTS, &c->flags))
* For every snapshot node: If we have no live children and it's not
* pointed to by a subvolume, delete it:
*/
- for_each_btree_key(&trans, iter, BTREE_ID_snapshots,
- POS_MIN, 0, k, ret) {
- if (k.k->type != KEY_TYPE_snapshot)
- continue;
-
- snap = bkey_s_c_to_snapshot(k);
- if (BCH_SNAPSHOT_DELETED(snap.v) ||
- BCH_SNAPSHOT_SUBVOL(snap.v))
- continue;
-
- children[0] = le32_to_cpu(snap.v->children[0]);
- children[1] = le32_to_cpu(snap.v->children[1]);
-
- ret = snapshot_live(&trans, children[0]) ?:
- snapshot_live(&trans, children[1]);
- if (ret < 0)
- break;
- if (ret)
- continue;
-
- ret = commit_do(&trans, NULL, NULL, 0,
- bch2_snapshot_node_set_deleted(&trans, iter.pos.offset));
- if (ret) {
- bch_err(c, "error deleting snapshot %llu: %i", iter.pos.offset, ret);
- break;
- }
- }
- bch2_trans_iter_exit(&trans, &iter);
-
+ ret = for_each_btree_key_commit(&trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
+ NULL, NULL, 0,
+ bch2_delete_redundant_snapshot(&trans, &iter, k));
if (ret) {
- bch_err(c, "error walking snapshots: %i", ret);
+ bch_err(c, "error deleting redundant snapshots: %i", ret);
goto err;
}
- ret = bch2_snapshots_set_equiv(&trans);
- if (ret)
+ for_each_btree_key2(&trans, iter, BTREE_ID_snapshots,
+ POS_MIN, 0, k,
+ bch2_snapshot_set_equiv(&trans, k));
+ if (ret) {
+ bch_err(c, "error in bch2_snapshots_set_equiv: %i", ret);
goto err;
+ }
for_each_btree_key(&trans, iter, BTREE_ID_snapshots,
POS_MIN, 0, k, ret) {
projects / thirdparty / kernel / linux.git / commitdiff
