Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Definitions for diskquota-operations. When diskquota is configured these |
| 3 | * macros expand to the right source-code. |
| 4 | * |
| 5 | * Author: Marco van Wieringen <mvw@planets.elm.net> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | */ |
| 7 | #ifndef _LINUX_QUOTAOPS_ |
| 8 | #define _LINUX_QUOTAOPS_ |
| 9 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <linux/smp_lock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/fs.h> |
| 12 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 13 | static inline struct quota_info *sb_dqopt(struct super_block *sb) |
| 14 | { |
| 15 | return &sb->s_dquot; |
| 16 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #if defined(CONFIG_QUOTA) |
| 19 | |
| 20 | /* |
| 21 | * declaration of quota_function calls in kernel. |
| 22 | */ |
Christoph Hellwig | 850b201 | 2009-04-27 16:43:54 +0200 | [diff] [blame] | 23 | void sync_quota_sb(struct super_block *sb, int type); |
Jan Kara | c3f8a40 | 2009-04-27 16:43:55 +0200 | [diff] [blame] | 24 | static inline void writeout_quota_sb(struct super_block *sb, int type) |
| 25 | { |
| 26 | if (sb->s_qcop->quota_sync) |
| 27 | sb->s_qcop->quota_sync(sb, type); |
| 28 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 30 | int dquot_initialize(struct inode *inode, int type); |
| 31 | int dquot_drop(struct inode *inode); |
Jan Kara | 3d9ea25 | 2008-10-10 16:12:23 +0200 | [diff] [blame] | 32 | struct dquot *dqget(struct super_block *sb, unsigned int id, int type); |
| 33 | void dqput(struct dquot *dquot); |
Jan Kara | 12c7752 | 2008-10-20 17:05:00 +0200 | [diff] [blame] | 34 | int dquot_scan_active(struct super_block *sb, |
| 35 | int (*fn)(struct dquot *dquot, unsigned long priv), |
| 36 | unsigned long priv); |
Jan Kara | 7d9056b | 2008-11-25 15:31:32 +0100 | [diff] [blame] | 37 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
| 38 | void dquot_destroy(struct dquot *dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 40 | int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc); |
Jan Kara | 1209546 | 2008-08-20 14:45:12 +0200 | [diff] [blame] | 41 | int dquot_alloc_inode(const struct inode *inode, qsize_t number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 43 | int dquot_reserve_space(struct inode *inode, qsize_t number, int prealloc); |
| 44 | int dquot_claim_space(struct inode *inode, qsize_t number); |
| 45 | void dquot_release_reserved_space(struct inode *inode, qsize_t number); |
| 46 | qsize_t dquot_get_reserved_space(struct inode *inode); |
| 47 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 48 | int dquot_free_space(struct inode *inode, qsize_t number); |
Jan Kara | 1209546 | 2008-08-20 14:45:12 +0200 | [diff] [blame] | 49 | int dquot_free_inode(const struct inode *inode, qsize_t number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 51 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
| 52 | int dquot_commit(struct dquot *dquot); |
| 53 | int dquot_acquire(struct dquot *dquot); |
| 54 | int dquot_release(struct dquot *dquot); |
| 55 | int dquot_commit_info(struct super_block *sb, int type); |
| 56 | int dquot_mark_dquot_dirty(struct dquot *dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 58 | int vfs_quota_on(struct super_block *sb, int type, int format_id, |
| 59 | char *path, int remount); |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 60 | int vfs_quota_enable(struct inode *inode, int type, int format_id, |
| 61 | unsigned int flags); |
Al Viro | 77e69da | 2008-08-01 04:29:18 -0400 | [diff] [blame] | 62 | int vfs_quota_on_path(struct super_block *sb, int type, int format_id, |
| 63 | struct path *path); |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 64 | int vfs_quota_on_mount(struct super_block *sb, char *qf_name, |
| 65 | int format_id, int type); |
| 66 | int vfs_quota_off(struct super_block *sb, int type, int remount); |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 67 | int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags); |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 68 | int vfs_quota_sync(struct super_block *sb, int type); |
| 69 | int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); |
| 70 | int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii); |
| 71 | int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di); |
| 72 | int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di); |
| 73 | |
| 74 | void vfs_dq_drop(struct inode *inode); |
| 75 | int vfs_dq_transfer(struct inode *inode, struct iattr *iattr); |
| 76 | int vfs_dq_quota_on_remount(struct super_block *sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 78 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
| 79 | { |
| 80 | return sb_dqopt(sb)->info + type; |
| 81 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 82 | |
| 83 | /* |
| 84 | * Functions for checking status of quota |
| 85 | */ |
| 86 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 87 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 88 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 89 | return sb_dqopt(sb)->flags & |
| 90 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 91 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 92 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 93 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 94 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 95 | return sb_dqopt(sb)->flags & |
| 96 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 97 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 98 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 99 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) |
| 100 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 101 | return sb_dqopt(sb)->flags & |
| 102 | dquot_state_flag(DQUOT_SUSPENDED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 103 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 104 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 105 | static inline int sb_any_quota_suspended(struct super_block *sb) |
| 106 | { |
| 107 | return sb_has_quota_suspended(sb, USRQUOTA) || |
| 108 | sb_has_quota_suspended(sb, GRPQUOTA); |
| 109 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 110 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 111 | /* Does kernel know about any quota information for given sb + type? */ |
| 112 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) |
| 113 | { |
| 114 | /* Currently if anything is on, then quota usage is on as well */ |
| 115 | return sb_has_quota_usage_enabled(sb, type); |
| 116 | } |
| 117 | |
| 118 | static inline int sb_any_quota_loaded(struct super_block *sb) |
| 119 | { |
| 120 | return sb_has_quota_loaded(sb, USRQUOTA) || |
| 121 | sb_has_quota_loaded(sb, GRPQUOTA); |
| 122 | } |
| 123 | |
| 124 | static inline int sb_has_quota_active(struct super_block *sb, int type) |
| 125 | { |
| 126 | return sb_has_quota_loaded(sb, type) && |
| 127 | !sb_has_quota_suspended(sb, type); |
| 128 | } |
| 129 | |
| 130 | static inline int sb_any_quota_active(struct super_block *sb) |
| 131 | { |
| 132 | return sb_has_quota_active(sb, USRQUOTA) || |
| 133 | sb_has_quota_active(sb, GRPQUOTA); |
| 134 | } |
| 135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | /* |
| 137 | * Operations supported for diskquotas. |
| 138 | */ |
| 139 | extern struct dquot_operations dquot_operations; |
| 140 | extern struct quotactl_ops vfs_quotactl_ops; |
| 141 | |
| 142 | #define sb_dquot_ops (&dquot_operations) |
| 143 | #define sb_quotactl_ops (&vfs_quotactl_ops) |
| 144 | |
| 145 | /* It is better to call this function outside of any transaction as it might |
| 146 | * need a lot of space in journal for dquot structure allocation. */ |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 147 | static inline void vfs_dq_init(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
| 149 | BUG_ON(!inode->i_sb); |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 150 | if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | inode->i_sb->dq_op->initialize(inode, -1); |
| 152 | } |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | /* The following allocation/freeing/transfer functions *must* be called inside |
| 155 | * a transaction (deadlocks possible otherwise) */ |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 156 | static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 158 | if (sb_any_quota_active(inode->i_sb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | /* Used space is updated in alloc_space() */ |
| 160 | if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA) |
| 161 | return 1; |
| 162 | } |
| 163 | else |
| 164 | inode_add_bytes(inode, nr); |
| 165 | return 0; |
| 166 | } |
| 167 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 168 | static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
| 170 | int ret; |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 171 | if (!(ret = vfs_dq_prealloc_space_nodirty(inode, nr))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | mark_inode_dirty(inode); |
| 173 | return ret; |
| 174 | } |
| 175 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 176 | static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 178 | if (sb_any_quota_active(inode->i_sb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | /* Used space is updated in alloc_space() */ |
| 180 | if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA) |
| 181 | return 1; |
| 182 | } |
| 183 | else |
| 184 | inode_add_bytes(inode, nr); |
| 185 | return 0; |
| 186 | } |
| 187 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 188 | static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { |
| 190 | int ret; |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 191 | if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | mark_inode_dirty(inode); |
| 193 | return ret; |
| 194 | } |
| 195 | |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 196 | static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr) |
| 197 | { |
| 198 | if (sb_any_quota_active(inode->i_sb)) { |
| 199 | /* Used space is updated in alloc_space() */ |
| 200 | if (inode->i_sb->dq_op->reserve_space(inode, nr, 0) == NO_QUOTA) |
| 201 | return 1; |
| 202 | } |
| 203 | return 0; |
| 204 | } |
| 205 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 206 | static inline int vfs_dq_alloc_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 208 | if (sb_any_quota_active(inode->i_sb)) { |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 209 | vfs_dq_init(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) |
| 211 | return 1; |
| 212 | } |
| 213 | return 0; |
| 214 | } |
| 215 | |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 216 | /* |
| 217 | * Convert in-memory reserved quotas to real consumed quotas |
| 218 | */ |
| 219 | static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr) |
| 220 | { |
| 221 | if (sb_any_quota_active(inode->i_sb)) { |
| 222 | if (inode->i_sb->dq_op->claim_space(inode, nr) == NO_QUOTA) |
| 223 | return 1; |
| 224 | } else |
| 225 | inode_add_bytes(inode, nr); |
| 226 | |
| 227 | mark_inode_dirty(inode); |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | * Release reserved (in-memory) quotas |
| 233 | */ |
| 234 | static inline |
| 235 | void vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr) |
| 236 | { |
| 237 | if (sb_any_quota_active(inode->i_sb)) |
| 238 | inode->i_sb->dq_op->release_rsv(inode, nr); |
| 239 | } |
| 240 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 241 | static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 243 | if (sb_any_quota_active(inode->i_sb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | inode->i_sb->dq_op->free_space(inode, nr); |
| 245 | else |
| 246 | inode_sub_bytes(inode, nr); |
| 247 | } |
| 248 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 249 | static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 251 | vfs_dq_free_space_nodirty(inode, nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | mark_inode_dirty(inode); |
| 253 | } |
| 254 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 255 | static inline void vfs_dq_free_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 257 | if (sb_any_quota_active(inode->i_sb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | inode->i_sb->dq_op->free_inode(inode, 1); |
| 259 | } |
| 260 | |
Christoph Hellwig | 850b201 | 2009-04-27 16:43:54 +0200 | [diff] [blame] | 261 | /* Cannot be called inside a transaction */ |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 262 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
| 264 | int ret = -ENOSYS; |
| 265 | |
Jan Kara | 0ff5af8 | 2008-04-28 02:14:33 -0700 | [diff] [blame] | 266 | if (sb->s_qcop && sb->s_qcop->quota_off) |
| 267 | ret = sb->s_qcop->quota_off(sb, -1, remount); |
| 268 | return ret; |
| 269 | } |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | #else |
| 272 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 273 | static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 274 | { |
| 275 | return 0; |
| 276 | } |
| 277 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 278 | static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 279 | { |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) |
| 284 | { |
| 285 | return 0; |
| 286 | } |
| 287 | |
| 288 | static inline int sb_any_quota_suspended(struct super_block *sb) |
| 289 | { |
| 290 | return 0; |
| 291 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 292 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 293 | /* Does kernel know about any quota information for given sb + type? */ |
| 294 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) |
| 295 | { |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | static inline int sb_any_quota_loaded(struct super_block *sb) |
| 300 | { |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | static inline int sb_has_quota_active(struct super_block *sb, int type) |
| 305 | { |
| 306 | return 0; |
| 307 | } |
| 308 | |
| 309 | static inline int sb_any_quota_active(struct super_block *sb) |
| 310 | { |
| 311 | return 0; |
| 312 | } |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* |
| 315 | * NO-OP when quota not configured. |
| 316 | */ |
| 317 | #define sb_dquot_ops (NULL) |
| 318 | #define sb_quotactl_ops (NULL) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 319 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 320 | static inline void vfs_dq_init(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 321 | { |
| 322 | } |
| 323 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 324 | static inline void vfs_dq_drop(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 325 | { |
| 326 | } |
| 327 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 328 | static inline int vfs_dq_alloc_inode(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 329 | { |
| 330 | return 0; |
| 331 | } |
| 332 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 333 | static inline void vfs_dq_free_inode(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 334 | { |
| 335 | } |
| 336 | |
Christoph Hellwig | 850b201 | 2009-04-27 16:43:54 +0200 | [diff] [blame] | 337 | static inline void sync_quota_sb(struct super_block *sb, int type) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 338 | { |
| 339 | } |
| 340 | |
Jan Kara | c3f8a40 | 2009-04-27 16:43:55 +0200 | [diff] [blame] | 341 | static inline void writeout_quota_sb(struct super_block *sb, int type) |
| 342 | { |
| 343 | } |
| 344 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 345 | static inline int vfs_dq_off(struct super_block *sb, int remount) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 346 | { |
| 347 | return 0; |
| 348 | } |
| 349 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 350 | static inline int vfs_dq_quota_on_remount(struct super_block *sb) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 351 | { |
| 352 | return 0; |
| 353 | } |
| 354 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 355 | static inline int vfs_dq_transfer(struct inode *inode, struct iattr *iattr) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 356 | { |
| 357 | return 0; |
| 358 | } |
| 359 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 360 | static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | { |
| 362 | inode_add_bytes(inode, nr); |
| 363 | return 0; |
| 364 | } |
| 365 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 366 | static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 368 | vfs_dq_prealloc_space_nodirty(inode, nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | mark_inode_dirty(inode); |
| 370 | return 0; |
| 371 | } |
| 372 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 373 | static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
| 375 | inode_add_bytes(inode, nr); |
| 376 | return 0; |
| 377 | } |
| 378 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 379 | static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | { |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 381 | vfs_dq_alloc_space_nodirty(inode, nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | mark_inode_dirty(inode); |
| 383 | return 0; |
| 384 | } |
| 385 | |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 386 | static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr) |
| 387 | { |
| 388 | return 0; |
| 389 | } |
| 390 | |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 391 | static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr) |
| 392 | { |
| 393 | return vfs_dq_alloc_space(inode, nr); |
| 394 | } |
| 395 | |
| 396 | static inline |
| 397 | int vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr) |
| 398 | { |
| 399 | return 0; |
| 400 | } |
| 401 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 402 | static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | { |
| 404 | inode_sub_bytes(inode, nr); |
| 405 | } |
| 406 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 407 | static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | { |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 409 | vfs_dq_free_space_nodirty(inode, nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | mark_inode_dirty(inode); |
| 411 | } |
| 412 | |
| 413 | #endif /* CONFIG_QUOTA */ |
| 414 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 415 | static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 416 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 417 | return vfs_dq_prealloc_space_nodirty(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 418 | } |
| 419 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 420 | static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 421 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 422 | return vfs_dq_prealloc_space(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 425 | static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 426 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 427 | return vfs_dq_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 428 | } |
| 429 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 430 | static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 431 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 432 | return vfs_dq_alloc_space(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 433 | } |
| 434 | |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 435 | static inline int vfs_dq_reserve_block(struct inode *inode, qsize_t nr) |
| 436 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 437 | return vfs_dq_reserve_space(inode, nr << inode->i_blkbits); |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 438 | } |
| 439 | |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 440 | static inline int vfs_dq_claim_block(struct inode *inode, qsize_t nr) |
| 441 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 442 | return vfs_dq_claim_space(inode, nr << inode->i_blkbits); |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | static inline |
| 446 | void vfs_dq_release_reservation_block(struct inode *inode, qsize_t nr) |
| 447 | { |
| 448 | vfs_dq_release_reservation_space(inode, nr << inode->i_blkbits); |
| 449 | } |
| 450 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 451 | static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 452 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 453 | vfs_dq_free_space_nodirty(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 454 | } |
| 455 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 456 | static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 457 | { |
Mingming Cao | 9900ba3 | 2009-01-14 16:18:57 +0100 | [diff] [blame] | 458 | vfs_dq_free_space(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 459 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | #endif /* _LINUX_QUOTAOPS_ */ |