1 /* 2 * Copyright (C) 2014 Facebook. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public 6 * License v2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public 14 * License along with this program; if not, write to the 15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 16 * Boston, MA 021110-1307, USA. 17 */ 18 19 #ifndef __BTRFS_QGROUP__ 20 #define __BTRFS_QGROUP__ 21 22 #include "ulist.h" 23 #include "delayed-ref.h" 24 25 /* 26 * Record a dirty extent, and info qgroup to update quota on it 27 * TODO: Use kmem cache to alloc it. 28 */ 29 struct btrfs_qgroup_extent_record { 30 struct rb_node node; 31 u64 bytenr; 32 u64 num_bytes; 33 struct ulist *old_roots; 34 }; 35 36 int btrfs_quota_enable(struct btrfs_trans_handle *trans, 37 struct btrfs_fs_info *fs_info); 38 int btrfs_quota_disable(struct btrfs_trans_handle *trans, 39 struct btrfs_fs_info *fs_info); 40 int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); 41 void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); 42 int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); 43 int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, 44 struct btrfs_fs_info *fs_info, u64 src, u64 dst); 45 int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, 46 struct btrfs_fs_info *fs_info, u64 src, u64 dst); 47 int btrfs_create_qgroup(struct btrfs_trans_handle *trans, 48 struct btrfs_fs_info *fs_info, u64 qgroupid); 49 int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, 50 struct btrfs_fs_info *fs_info, u64 qgroupid); 51 int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, 52 struct btrfs_fs_info *fs_info, u64 qgroupid, 53 struct btrfs_qgroup_limit *limit); 54 int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); 55 void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); 56 struct btrfs_delayed_extent_op; 57 int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, 58 struct btrfs_fs_info *fs_info); 59 struct btrfs_qgroup_extent_record 60 *btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs, 61 struct btrfs_qgroup_extent_record *record); 62 int 63 btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, 64 struct btrfs_fs_info *fs_info, 65 u64 bytenr, u64 num_bytes, 66 struct ulist *old_roots, struct ulist *new_roots); 67 int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans, 68 struct btrfs_fs_info *fs_info); 69 int btrfs_run_qgroups(struct btrfs_trans_handle *trans, 70 struct btrfs_fs_info *fs_info); 71 int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, 72 struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, 73 struct btrfs_qgroup_inherit *inherit); 74 int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); 75 void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); 76 77 void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); 78 79 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS 80 int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid, 81 u64 rfer, u64 excl); 82 #endif 83 84 #endif /* __BTRFS_QGROUP__ */ 85