mirror of https://gitee.com/openkylin/linux.git
101 lines
4.1 KiB
C
101 lines
4.1 KiB
C
/*
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* Copyright (C) 2014 Facebook. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_QGROUP__
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#define __BTRFS_QGROUP__
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#include "ulist.h"
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#include "delayed-ref.h"
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/*
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* Record a dirty extent, and info qgroup to update quota on it
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* TODO: Use kmem cache to alloc it.
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*/
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struct btrfs_qgroup_extent_record {
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struct rb_node node;
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u64 bytenr;
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u64 num_bytes;
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struct ulist *old_roots;
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};
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int btrfs_quota_enable(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_quota_disable(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info);
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void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info);
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int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info);
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int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 src, u64 dst);
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int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 src, u64 dst);
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int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 qgroupid);
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int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 qgroupid);
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int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 qgroupid,
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struct btrfs_qgroup_limit *limit);
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int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info);
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void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info);
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struct btrfs_delayed_extent_op;
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int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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struct btrfs_qgroup_extent_record
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*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs,
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struct btrfs_qgroup_extent_record *record);
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int
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btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info,
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u64 bytenr, u64 num_bytes,
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struct ulist *old_roots, struct ulist *new_roots);
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int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_run_qgroups(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info);
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int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
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struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid,
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struct btrfs_qgroup_inherit *inherit);
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void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info,
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u64 ref_root, u64 num_bytes);
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/*
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* TODO: Add proper trace point for it, as btrfs_qgroup_free() is
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* called by everywhere, can't provide good trace for delayed ref case.
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*/
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static inline void btrfs_qgroup_free_delayed_ref(struct btrfs_fs_info *fs_info,
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u64 ref_root, u64 num_bytes)
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{
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btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes);
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}
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void assert_qgroups_uptodate(struct btrfs_trans_handle *trans);
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#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
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int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid,
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u64 rfer, u64 excl);
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#endif
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/* New io_tree based accurate qgroup reserve API */
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int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len);
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int btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len);
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int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len);
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int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes);
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void btrfs_qgroup_free_meta_all(struct btrfs_root *root);
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void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes);
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#endif /* __BTRFS_QGROUP__ */
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