diff options
Diffstat (limited to 'fs/bcachefs/dirent.c')
-rw-r--r-- | fs/bcachefs/dirent.c | 97 |
1 files changed, 45 insertions, 52 deletions
diff --git a/fs/bcachefs/dirent.c b/fs/bcachefs/dirent.c index d37bd07afbfe..6bbf9a7d9e4d 100644 --- a/fs/bcachefs/dirent.c +++ b/fs/bcachefs/dirent.c @@ -98,7 +98,7 @@ const struct bch_hash_desc bch2_dirent_hash_desc = { }; int bch2_dirent_invalid(struct bch_fs *c, struct bkey_s_c k, - enum bkey_invalid_flags flags, + enum bch_validate_flags flags, struct printbuf *err) { struct bkey_s_c_dirent d = bkey_s_c_to_dirent(k); @@ -118,7 +118,7 @@ int bch2_dirent_invalid(struct bch_fs *c, struct bkey_s_c k, * Check new keys don't exceed the max length * (older keys may be larger.) */ - bkey_fsck_err_on((flags & BKEY_INVALID_COMMIT) && d_name.len > BCH_NAME_MAX, c, err, + bkey_fsck_err_on((flags & BCH_VALIDATE_commit) && d_name.len > BCH_NAME_MAX, c, err, dirent_name_too_long, "dirent name too big (%u > %u)", d_name.len, BCH_NAME_MAX); @@ -205,7 +205,7 @@ int bch2_dirent_create_snapshot(struct btree_trans *trans, const struct bch_hash_info *hash_info, u8 type, const struct qstr *name, u64 dst_inum, u64 *dir_offset, - bch_str_hash_flags_t str_hash_flags) + enum btree_iter_update_trigger_flags flags) { subvol_inum dir_inum = { .subvol = dir_subvol, .inum = dir }; struct bkey_i_dirent *dirent; @@ -220,9 +220,8 @@ int bch2_dirent_create_snapshot(struct btree_trans *trans, dirent->k.p.snapshot = snapshot; ret = bch2_hash_set_in_snapshot(trans, bch2_dirent_hash_desc, hash_info, - dir_inum, snapshot, - &dirent->k_i, str_hash_flags, - BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE); + dir_inum, snapshot, &dirent->k_i, + flags|BTREE_UPDATE_internal_snapshot_node); *dir_offset = dirent->k.p.offset; return ret; @@ -232,7 +231,7 @@ int bch2_dirent_create(struct btree_trans *trans, subvol_inum dir, const struct bch_hash_info *hash_info, u8 type, const struct qstr *name, u64 dst_inum, u64 *dir_offset, - bch_str_hash_flags_t str_hash_flags) + enum btree_iter_update_trigger_flags flags) { struct bkey_i_dirent *dirent; int ret; @@ -243,7 +242,7 @@ int bch2_dirent_create(struct btree_trans *trans, subvol_inum dir, return ret; ret = bch2_hash_set(trans, bch2_dirent_hash_desc, hash_info, - dir, &dirent->k_i, str_hash_flags); + dir, &dirent->k_i, flags); *dir_offset = dirent->k.p.offset; return ret; @@ -272,7 +271,7 @@ int bch2_dirent_read_target(struct btree_trans *trans, subvol_inum dir, } else { target->subvol = le32_to_cpu(d.v->d_child_subvol); - ret = bch2_subvolume_get(trans, target->subvol, true, BTREE_ITER_CACHED, &s); + ret = bch2_subvolume_get(trans, target->subvol, true, BTREE_ITER_cached, &s); target->inum = le64_to_cpu(s.inode); } @@ -301,13 +300,9 @@ int bch2_dirent_rename(struct btree_trans *trans, memset(dst_inum, 0, sizeof(*dst_inum)); /* Lookup src: */ - ret = bch2_hash_lookup(trans, &src_iter, bch2_dirent_hash_desc, - src_hash, src_dir, src_name, - BTREE_ITER_INTENT); - if (ret) - goto out; - - old_src = bch2_btree_iter_peek_slot(&src_iter); + old_src = bch2_hash_lookup(trans, &src_iter, bch2_dirent_hash_desc, + src_hash, src_dir, src_name, + BTREE_ITER_intent); ret = bkey_err(old_src); if (ret) goto out; @@ -329,13 +324,9 @@ int bch2_dirent_rename(struct btree_trans *trans, if (ret) goto out; } else { - ret = bch2_hash_lookup(trans, &dst_iter, bch2_dirent_hash_desc, - dst_hash, dst_dir, dst_name, - BTREE_ITER_INTENT); - if (ret) - goto out; - - old_dst = bch2_btree_iter_peek_slot(&dst_iter); + old_dst = bch2_hash_lookup(trans, &dst_iter, bch2_dirent_hash_desc, + dst_hash, dst_dir, dst_name, + BTREE_ITER_intent); ret = bkey_err(old_dst); if (ret) goto out; @@ -450,7 +441,7 @@ out_set_src: if (delete_src) { bch2_btree_iter_set_snapshot(&src_iter, old_src.k->p.snapshot); ret = bch2_btree_iter_traverse(&src_iter) ?: - bch2_btree_delete_at(trans, &src_iter, BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE); + bch2_btree_delete_at(trans, &src_iter, BTREE_UPDATE_internal_snapshot_node); if (ret) goto out; } @@ -458,7 +449,7 @@ out_set_src: if (delete_dst) { bch2_btree_iter_set_snapshot(&dst_iter, old_dst.k->p.snapshot); ret = bch2_btree_iter_traverse(&dst_iter) ?: - bch2_btree_delete_at(trans, &dst_iter, BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE); + bch2_btree_delete_at(trans, &dst_iter, BTREE_UPDATE_internal_snapshot_node); if (ret) goto out; } @@ -479,13 +470,9 @@ int bch2_dirent_lookup_trans(struct btree_trans *trans, const struct qstr *name, subvol_inum *inum, unsigned flags) { - int ret = bch2_hash_lookup(trans, iter, bch2_dirent_hash_desc, - hash_info, dir, name, flags); - if (ret) - return ret; - - struct bkey_s_c k = bch2_btree_iter_peek_slot(iter); - ret = bkey_err(k); + struct bkey_s_c k = bch2_hash_lookup(trans, iter, bch2_dirent_hash_desc, + hash_info, dir, name, flags); + int ret = bkey_err(k); if (ret) goto err; @@ -541,16 +528,26 @@ int bch2_empty_dir_trans(struct btree_trans *trans, subvol_inum dir) bch2_empty_dir_snapshot(trans, dir.inum, dir.subvol, snapshot); } +static int bch2_dir_emit(struct dir_context *ctx, struct bkey_s_c_dirent d, subvol_inum target) +{ + struct qstr name = bch2_dirent_get_name(d); + bool ret = dir_emit(ctx, name.name, + name.len, + target.inum, + vfs_d_type(d.v->d_type)); + if (ret) + ctx->pos = d.k->p.offset + 1; + return ret; +} + int bch2_readdir(struct bch_fs *c, subvol_inum inum, struct dir_context *ctx) { struct btree_trans *trans = bch2_trans_get(c); struct btree_iter iter; struct bkey_s_c k; - struct bkey_s_c_dirent dirent; subvol_inum target; u32 snapshot; struct bkey_buf sk; - struct qstr name; int ret; bch2_bkey_buf_init(&sk); @@ -567,7 +564,9 @@ retry: if (k.k->type != KEY_TYPE_dirent) continue; - dirent = bkey_s_c_to_dirent(k); + /* dir_emit() can fault and block: */ + bch2_bkey_buf_reassemble(&sk, c, k); + struct bkey_s_c_dirent dirent = bkey_i_to_s_c_dirent(sk.k); ret = bch2_dirent_read_target(trans, inum, dirent, &target); if (ret < 0) @@ -575,28 +574,22 @@ retry: if (ret) continue; - /* dir_emit() can fault and block: */ - bch2_bkey_buf_reassemble(&sk, c, k); - dirent = bkey_i_to_s_c_dirent(sk.k); - bch2_trans_unlock(trans); - - name = bch2_dirent_get_name(dirent); - - ctx->pos = dirent.k->p.offset; - if (!dir_emit(ctx, name.name, - name.len, - target.inum, - vfs_d_type(dirent.v->d_type))) - break; - ctx->pos = dirent.k->p.offset + 1; - /* * read_target looks up subvolumes, we can overflow paths if the * directory has many subvolumes in it + * + * XXX: btree_trans_too_many_iters() is something we'd like to + * get rid of, and there's no good reason to be using it here + * except that we don't yet have a for_each_btree_key() helper + * that does subvolume_get_snapshot(). */ - ret = btree_trans_too_many_iters(trans); - if (ret) + ret = drop_locks_do(trans, + bch2_dir_emit(ctx, dirent, target)) ?: + btree_trans_too_many_iters(trans); + if (ret) { + ret = ret < 0 ? ret : 0; break; + } } bch2_trans_iter_exit(trans, &iter); err: |