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10#ifndef _OCFS2_QUOTA_H
11#define _OCFS2_QUOTA_H
12
13#include <linux/types.h>
14#include <linux/slab.h>
15#include <linux/quota.h>
16#include <linux/list.h>
17#include <linux/dqblk_qtree.h>
18
19#include "ocfs2.h"
20
21
22#define OCFS2_MAXQUOTAS 2
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25
26
27struct ocfs2_dquot {
28 struct dquot dq_dquot;
29 loff_t dq_local_off;
30 u64 dq_local_phys_blk;
31 struct ocfs2_quota_chunk *dq_chunk;
32 unsigned int dq_use_count;
33 s64 dq_origspace;
34 s64 dq_originodes;
35 struct llist_node list;
36};
37
38
39struct ocfs2_recovery_chunk {
40 struct list_head rc_list;
41 int rc_chunk;
42 unsigned long *rc_bitmap;
43};
44
45struct ocfs2_quota_recovery {
46 struct list_head r_list[OCFS2_MAXQUOTAS];
47};
48
49
50struct ocfs2_mem_dqinfo {
51 unsigned int dqi_type;
52 unsigned int dqi_flags;
53 unsigned int dqi_chunks;
54 unsigned int dqi_blocks;
55 unsigned int dqi_syncms;
56 struct list_head dqi_chunk;
57 struct inode *dqi_gqinode;
58 struct ocfs2_lock_res dqi_gqlock;
59 struct buffer_head *dqi_gqi_bh;
60 int dqi_gqi_count;
61 u64 dqi_giblk;
62 struct buffer_head *dqi_lqi_bh;
63 struct buffer_head *dqi_libh;
64 struct qtree_mem_dqinfo dqi_gi;
65 struct delayed_work dqi_sync_work;
66 struct ocfs2_quota_recovery *dqi_rec;
67
68
69
70};
71
72static inline struct ocfs2_dquot *OCFS2_DQUOT(struct dquot *dquot)
73{
74 return container_of(dquot, struct ocfs2_dquot, dq_dquot);
75}
76
77struct ocfs2_quota_chunk {
78 struct list_head qc_chunk;
79 int qc_num;
80 struct buffer_head *qc_headerbh;
81};
82
83extern struct kmem_cache *ocfs2_dquot_cachep;
84extern struct kmem_cache *ocfs2_qf_chunk_cachep;
85
86extern const struct qtree_fmt_operations ocfs2_global_ops;
87
88struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
89 struct ocfs2_super *osb, int slot_num);
90int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
91 struct ocfs2_quota_recovery *rec,
92 int slot_num);
93void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec);
94ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data,
95 size_t len, loff_t off);
96ssize_t ocfs2_quota_write(struct super_block *sb, int type,
97 const char *data, size_t len, loff_t off);
98int ocfs2_global_read_info(struct super_block *sb, int type);
99int ocfs2_global_write_info(struct super_block *sb, int type);
100int ocfs2_global_read_dquot(struct dquot *dquot);
101int __ocfs2_sync_dquot(struct dquot *dquot, int freeing);
102static inline int ocfs2_sync_dquot(struct dquot *dquot)
103{
104 return __ocfs2_sync_dquot(dquot, 0);
105}
106static inline int ocfs2_global_release_dquot(struct dquot *dquot)
107{
108 return __ocfs2_sync_dquot(dquot, 1);
109}
110
111int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
112void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex);
113int ocfs2_validate_quota_block(struct super_block *sb, struct buffer_head *bh);
114int ocfs2_read_quota_phys_block(struct inode *inode, u64 p_block,
115 struct buffer_head **bh);
116int ocfs2_create_local_dquot(struct dquot *dquot);
117int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot);
118int ocfs2_local_write_dquot(struct dquot *dquot);
119void ocfs2_drop_dquot_refs(struct work_struct *work);
120
121extern const struct dquot_operations ocfs2_quota_operations;
122extern struct quota_format_type ocfs2_quota_format;
123
124#endif
125