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 /* 37 * For qgroup event trace points only 38 */ 39 #define QGROUP_RESERVE (1<<0) 40 #define QGROUP_RELEASE (1<<1) 41 #define QGROUP_FREE (1<<2) 42 43 int btrfs_quota_enable(struct btrfs_trans_handle *trans, 44 struct btrfs_fs_info *fs_info); 45 int btrfs_quota_disable(struct btrfs_trans_handle *trans, 46 struct btrfs_fs_info *fs_info); 47 int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); 48 void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); 49 int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); 50 int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, 51 struct btrfs_fs_info *fs_info, u64 src, u64 dst); 52 int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, 53 struct btrfs_fs_info *fs_info, u64 src, u64 dst); 54 int btrfs_create_qgroup(struct btrfs_trans_handle *trans, 55 struct btrfs_fs_info *fs_info, u64 qgroupid); 56 int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, 57 struct btrfs_fs_info *fs_info, u64 qgroupid); 58 int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, 59 struct btrfs_fs_info *fs_info, u64 qgroupid, 60 struct btrfs_qgroup_limit *limit); 61 int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); 62 void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); 63 struct btrfs_delayed_extent_op; 64 int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, 65 struct btrfs_fs_info *fs_info); 66 struct btrfs_qgroup_extent_record 67 *btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs, 68 struct btrfs_qgroup_extent_record *record); 69 int 70 btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, 71 struct btrfs_fs_info *fs_info, 72 u64 bytenr, u64 num_bytes, 73 struct ulist *old_roots, struct ulist *new_roots); 74 int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans, 75 struct btrfs_fs_info *fs_info); 76 int btrfs_run_qgroups(struct btrfs_trans_handle *trans, 77 struct btrfs_fs_info *fs_info); 78 int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, 79 struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, 80 struct btrfs_qgroup_inherit *inherit); 81 void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, 82 u64 ref_root, u64 num_bytes); 83 /* 84 * TODO: Add proper trace point for it, as btrfs_qgroup_free() is 85 * called by everywhere, can't provide good trace for delayed ref case. 86 */ 87 static inline void btrfs_qgroup_free_delayed_ref(struct btrfs_fs_info *fs_info, 88 u64 ref_root, u64 num_bytes) 89 { 90 btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes); 91 trace_btrfs_qgroup_free_delayed_ref(ref_root, num_bytes); 92 } 93 void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); 94 95 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS 96 int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid, 97 u64 rfer, u64 excl); 98 #endif 99 100 /* New io_tree based accurate qgroup reserve API */ 101 int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len); 102 int btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len); 103 int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len); 104 105 int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes); 106 void btrfs_qgroup_free_meta_all(struct btrfs_root *root); 107 void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes); 108 void btrfs_qgroup_check_reserved_leak(struct inode *inode); 109 #endif /* __BTRFS_QGROUP__ */ 110