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/fs.h> |
| 11 | |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 12 | #define DQUOT_SPACE_WARN 0x1 |
| 13 | #define DQUOT_SPACE_RESERVE 0x2 |
Eric Sandeen | 0e05842 | 2010-05-16 10:00:00 -0400 | [diff] [blame] | 14 | #define DQUOT_SPACE_NOFAIL 0x4 |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 15 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 16 | static inline struct quota_info *sb_dqopt(struct super_block *sb) |
| 17 | { |
| 18 | return &sb->s_dquot; |
| 19 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 20 | |
Dmitry Monakhov | 1275562 | 2010-04-08 22:04:20 +0400 | [diff] [blame] | 21 | /* i_mutex must being held */ |
| 22 | static inline bool is_quota_modification(struct inode *inode, struct iattr *ia) |
| 23 | { |
| 24 | return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) || |
Eric W. Biederman | 8e96e3b | 2012-03-03 21:17:15 -0800 | [diff] [blame] | 25 | (ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) || |
| 26 | (ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid)); |
Dmitry Monakhov | 1275562 | 2010-04-08 22:04:20 +0400 | [diff] [blame] | 27 | } |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #if defined(CONFIG_QUOTA) |
| 30 | |
Jiaying Zhang | fb5ffb0 | 2010-07-20 16:54:43 +0200 | [diff] [blame] | 31 | #define quota_error(sb, fmt, args...) \ |
| 32 | __quota_error((sb), __func__, fmt , ## args) |
| 33 | |
Joe Perches | b9075fa | 2011-10-31 17:11:33 -0700 | [diff] [blame] | 34 | extern __printf(3, 4) |
Joe Perches | 055adcb | 2010-11-23 18:49:54 -0800 | [diff] [blame] | 35 | void __quota_error(struct super_block *sb, const char *func, |
| 36 | const char *fmt, ...); |
Jiaying Zhang | fb5ffb0 | 2010-07-20 16:54:43 +0200 | [diff] [blame] | 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | /* |
| 39 | * declaration of quota_function calls in kernel. |
| 40 | */ |
Dmitry Monakhov | c469070 | 2010-02-09 17:53:36 +0100 | [diff] [blame] | 41 | void inode_add_rsv_space(struct inode *inode, qsize_t number); |
| 42 | void inode_claim_rsv_space(struct inode *inode, qsize_t number); |
| 43 | void inode_sub_rsv_space(struct inode *inode, qsize_t number); |
Jan Kara | 1c8924e | 2013-08-17 09:32:32 -0400 | [diff] [blame] | 44 | void inode_reclaim_rsv_space(struct inode *inode, qsize_t number); |
Dmitry Monakhov | c469070 | 2010-02-09 17:53:36 +0100 | [diff] [blame] | 45 | |
Jan Kara | 6184fc0 | 2015-06-24 18:07:02 +0200 | [diff] [blame] | 46 | int dquot_initialize(struct inode *inode); |
Christoph Hellwig | 9f75475 | 2010-03-03 09:05:05 -0500 | [diff] [blame] | 47 | void dquot_drop(struct inode *inode); |
Eric W. Biederman | aca645a | 2012-09-16 03:11:50 -0700 | [diff] [blame] | 48 | struct dquot *dqget(struct super_block *sb, struct kqid qid); |
Jan Kara | 9f985cb | 2014-04-03 14:46:55 -0700 | [diff] [blame] | 49 | static inline struct dquot *dqgrab(struct dquot *dquot) |
| 50 | { |
| 51 | /* Make sure someone else has active reference to dquot */ |
| 52 | WARN_ON_ONCE(!atomic_read(&dquot->dq_count)); |
| 53 | WARN_ON_ONCE(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)); |
| 54 | atomic_inc(&dquot->dq_count); |
| 55 | return dquot; |
| 56 | } |
Jan Kara | 3d9ea25 | 2008-10-10 16:12:23 +0200 | [diff] [blame] | 57 | void dqput(struct dquot *dquot); |
Jan Kara | 12c7752 | 2008-10-20 17:05:00 +0200 | [diff] [blame] | 58 | int dquot_scan_active(struct super_block *sb, |
| 59 | int (*fn)(struct dquot *dquot, unsigned long priv), |
| 60 | unsigned long priv); |
Jan Kara | 7d9056b | 2008-11-25 15:31:32 +0100 | [diff] [blame] | 61 | struct dquot *dquot_alloc(struct super_block *sb, int type); |
| 62 | void dquot_destroy(struct dquot *dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 64 | int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags); |
| 65 | void __dquot_free_space(struct inode *inode, qsize_t number, int flags); |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 66 | |
Jan Kara | 6bab359 | 2014-10-20 16:01:33 +0200 | [diff] [blame] | 67 | int dquot_alloc_inode(struct inode *inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 69 | int dquot_claim_space_nodirty(struct inode *inode, qsize_t number); |
Jan Kara | 6bab359 | 2014-10-20 16:01:33 +0200 | [diff] [blame] | 70 | void dquot_free_inode(struct inode *inode); |
Jan Kara | 1c8924e | 2013-08-17 09:32:32 -0400 | [diff] [blame] | 71 | void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
Christoph Hellwig | 0f0dd62 | 2010-05-19 07:16:41 -0400 | [diff] [blame] | 73 | int dquot_disable(struct super_block *sb, int type, unsigned int flags); |
| 74 | /* Suspend quotas on remount RO */ |
| 75 | static inline int dquot_suspend(struct super_block *sb, int type) |
| 76 | { |
| 77 | return dquot_disable(sb, type, DQUOT_SUSPENDED); |
| 78 | } |
| 79 | int dquot_resume(struct super_block *sb, int type); |
| 80 | |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 81 | int dquot_commit(struct dquot *dquot); |
| 82 | int dquot_acquire(struct dquot *dquot); |
| 83 | int dquot_release(struct dquot *dquot); |
| 84 | int dquot_commit_info(struct super_block *sb, int type); |
| 85 | int dquot_mark_dquot_dirty(struct dquot *dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 87 | int dquot_file_open(struct inode *inode, struct file *file); |
| 88 | |
Christoph Hellwig | 287a809 | 2010-05-19 07:16:45 -0400 | [diff] [blame] | 89 | int dquot_enable(struct inode *inode, int type, int format_id, |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 90 | unsigned int flags); |
Jan Kara | f00c9e4 | 2010-09-15 17:38:58 +0200 | [diff] [blame] | 91 | int dquot_quota_on(struct super_block *sb, int type, int format_id, |
Al Viro | 77e69da | 2008-08-01 04:29:18 -0400 | [diff] [blame] | 92 | struct path *path); |
Christoph Hellwig | 287a809 | 2010-05-19 07:16:45 -0400 | [diff] [blame] | 93 | int dquot_quota_on_mount(struct super_block *sb, char *qf_name, |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 94 | int format_id, int type); |
Christoph Hellwig | 287a809 | 2010-05-19 07:16:45 -0400 | [diff] [blame] | 95 | int dquot_quota_off(struct super_block *sb, int type); |
Jan Kara | ceed172 | 2012-07-03 16:45:28 +0200 | [diff] [blame] | 96 | int dquot_writeback_dquots(struct super_block *sb, int type); |
| 97 | int dquot_quota_sync(struct super_block *sb, int type); |
Jan Kara | 0a240339 | 2014-11-19 00:42:09 +0100 | [diff] [blame] | 98 | int dquot_get_state(struct super_block *sb, struct qc_state *state); |
Jan Kara | 5eacb2a | 2014-12-16 12:03:51 +0100 | [diff] [blame] | 99 | int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii); |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 100 | int dquot_get_dqblk(struct super_block *sb, struct kqid id, |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 101 | struct qc_dqblk *di); |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 102 | int dquot_set_dqblk(struct super_block *sb, struct kqid id, |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 103 | struct qc_dqblk *di); |
Jan Kara | b85f4b8 | 2008-07-25 01:46:50 -0700 | [diff] [blame] | 104 | |
Jan Kara | bc8e5f0 | 2010-05-13 19:58:50 +0200 | [diff] [blame] | 105 | int __dquot_transfer(struct inode *inode, struct dquot **transfer_to); |
Christoph Hellwig | b43fa82 | 2010-03-03 09:05:03 -0500 | [diff] [blame] | 106 | int dquot_transfer(struct inode *inode, struct iattr *iattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 108 | static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type) |
| 109 | { |
| 110 | return sb_dqopt(sb)->info + type; |
| 111 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 112 | |
| 113 | /* |
| 114 | * Functions for checking status of quota |
| 115 | */ |
| 116 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 117 | static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 118 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 119 | return sb_dqopt(sb)->flags & |
| 120 | dquot_state_flag(DQUOT_USAGE_ENABLED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 121 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 122 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 123 | static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 124 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 125 | return sb_dqopt(sb)->flags & |
| 126 | dquot_state_flag(DQUOT_LIMITS_ENABLED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 127 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 128 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 129 | static inline bool sb_has_quota_suspended(struct super_block *sb, int type) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 130 | { |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 131 | return sb_dqopt(sb)->flags & |
| 132 | dquot_state_flag(DQUOT_SUSPENDED, type); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 133 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 134 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 135 | static inline unsigned sb_any_quota_suspended(struct super_block *sb) |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 136 | { |
Konstantin Khlebnikov | 7819702 | 2015-02-12 19:08:16 +0300 | [diff] [blame] | 137 | return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_SUSPENDED); |
Jan Kara | 03b0634 | 2008-07-25 01:46:52 -0700 | [diff] [blame] | 138 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 139 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 140 | /* Does kernel know about any quota information for given sb + type? */ |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 141 | static inline bool sb_has_quota_loaded(struct super_block *sb, int type) |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 142 | { |
| 143 | /* Currently if anything is on, then quota usage is on as well */ |
| 144 | return sb_has_quota_usage_enabled(sb, type); |
| 145 | } |
| 146 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 147 | static inline unsigned sb_any_quota_loaded(struct super_block *sb) |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 148 | { |
Konstantin Khlebnikov | 7819702 | 2015-02-12 19:08:16 +0300 | [diff] [blame] | 149 | return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_USAGE_ENABLED); |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 150 | } |
| 151 | |
Dmitry Monakhov | ad1e6e8 | 2010-02-16 08:31:49 +0300 | [diff] [blame] | 152 | static inline bool sb_has_quota_active(struct super_block *sb, int type) |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 153 | { |
| 154 | return sb_has_quota_loaded(sb, type) && |
| 155 | !sb_has_quota_suspended(sb, type); |
| 156 | } |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | /* |
| 159 | * Operations supported for diskquotas. |
| 160 | */ |
Alexey Dobriyan | 61e225d | 2009-09-21 17:01:08 -0700 | [diff] [blame] | 161 | extern const struct dquot_operations dquot_operations; |
Christoph Hellwig | 287a809 | 2010-05-19 07:16:45 -0400 | [diff] [blame] | 162 | extern const struct quotactl_ops dquot_quotactl_ops; |
Jan Kara | 3e2af67 | 2014-10-06 18:40:51 +0200 | [diff] [blame] | 163 | extern const struct quotactl_ops dquot_quotactl_sysfile_ops; |
Jan Kara | 0ff5af8 | 2008-04-28 02:14:33 -0700 | [diff] [blame] | 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | #else |
| 166 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 167 | 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] | 168 | { |
| 169 | return 0; |
| 170 | } |
| 171 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 172 | 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] | 173 | { |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | static inline int sb_has_quota_suspended(struct super_block *sb, int type) |
| 178 | { |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static inline int sb_any_quota_suspended(struct super_block *sb) |
| 183 | { |
| 184 | return 0; |
| 185 | } |
Jan Kara | 74abb98 | 2008-07-25 01:46:51 -0700 | [diff] [blame] | 186 | |
Jan Kara | f55abc0 | 2008-08-20 17:50:32 +0200 | [diff] [blame] | 187 | /* Does kernel know about any quota information for given sb + type? */ |
| 188 | static inline int sb_has_quota_loaded(struct super_block *sb, int type) |
| 189 | { |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static inline int sb_any_quota_loaded(struct super_block *sb) |
| 194 | { |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | static inline int sb_has_quota_active(struct super_block *sb, int type) |
| 199 | { |
| 200 | return 0; |
| 201 | } |
| 202 | |
Jan Kara | 6184fc0 | 2015-06-24 18:07:02 +0200 | [diff] [blame] | 203 | static inline int dquot_initialize(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 204 | { |
Jan Kara | 6184fc0 | 2015-06-24 18:07:02 +0200 | [diff] [blame] | 205 | return 0; |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Christoph Hellwig | 9f75475 | 2010-03-03 09:05:05 -0500 | [diff] [blame] | 208 | static inline void dquot_drop(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 209 | { |
| 210 | } |
| 211 | |
Jan Kara | 6bab359 | 2014-10-20 16:01:33 +0200 | [diff] [blame] | 212 | static inline int dquot_alloc_inode(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 213 | { |
| 214 | return 0; |
| 215 | } |
| 216 | |
Jan Kara | 6bab359 | 2014-10-20 16:01:33 +0200 | [diff] [blame] | 217 | static inline void dquot_free_inode(struct inode *inode) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 218 | { |
| 219 | } |
| 220 | |
Christoph Hellwig | b43fa82 | 2010-03-03 09:05:03 -0500 | [diff] [blame] | 221 | static inline int dquot_transfer(struct inode *inode, struct iattr *iattr) |
Andrew Morton | 50f8c37 | 2008-04-28 02:14:35 -0700 | [diff] [blame] | 222 | { |
| 223 | return 0; |
| 224 | } |
| 225 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 226 | static inline int __dquot_alloc_space(struct inode *inode, qsize_t number, |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 227 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 229 | if (!(flags & DQUOT_SPACE_RESERVE)) |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 230 | inode_add_bytes(inode, number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return 0; |
| 232 | } |
| 233 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 234 | static inline void __dquot_free_space(struct inode *inode, qsize_t number, |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 235 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 237 | if (!(flags & DQUOT_SPACE_RESERVE)) |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 238 | inode_sub_bytes(inode, number); |
| 239 | } |
| 240 | |
| 241 | static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) |
| 242 | { |
| 243 | inode_add_bytes(inode, number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | return 0; |
| 245 | } |
| 246 | |
Jan Kara | 1c8924e | 2013-08-17 09:32:32 -0400 | [diff] [blame] | 247 | static inline int dquot_reclaim_space_nodirty(struct inode *inode, |
| 248 | qsize_t number) |
| 249 | { |
| 250 | inode_sub_bytes(inode, number); |
| 251 | return 0; |
| 252 | } |
| 253 | |
Christoph Hellwig | 0f0dd62 | 2010-05-19 07:16:41 -0400 | [diff] [blame] | 254 | static inline int dquot_disable(struct super_block *sb, int type, |
| 255 | unsigned int flags) |
| 256 | { |
| 257 | return 0; |
| 258 | } |
| 259 | |
| 260 | static inline int dquot_suspend(struct super_block *sb, int type) |
| 261 | { |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | static inline int dquot_resume(struct super_block *sb, int type) |
| 266 | { |
| 267 | return 0; |
| 268 | } |
| 269 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 270 | #define dquot_file_open generic_file_open |
| 271 | |
Jan Kara | ceed172 | 2012-07-03 16:45:28 +0200 | [diff] [blame] | 272 | static inline int dquot_writeback_dquots(struct super_block *sb, int type) |
| 273 | { |
| 274 | return 0; |
| 275 | } |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | #endif /* CONFIG_QUOTA */ |
| 278 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 279 | static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 280 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 281 | return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Eric Sandeen | 0e05842 | 2010-05-16 10:00:00 -0400 | [diff] [blame] | 284 | static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr) |
| 285 | { |
| 286 | __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL); |
Jan Kara | 43d2932 | 2010-07-21 14:22:21 +0200 | [diff] [blame] | 287 | mark_inode_dirty_sync(inode); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 290 | static inline int dquot_alloc_space(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 291 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 292 | int ret; |
| 293 | |
| 294 | ret = dquot_alloc_space_nodirty(inode, nr); |
Shaohua Li | d530148 | 2010-08-20 16:49:43 +0800 | [diff] [blame] | 295 | if (!ret) { |
| 296 | /* |
| 297 | * Mark inode fully dirty. Since we are allocating blocks, inode |
| 298 | * would become fully dirty soon anyway and it reportedly |
Dave Chinner | 250df6e | 2011-03-22 22:23:36 +1100 | [diff] [blame] | 299 | * reduces lock contention. |
Shaohua Li | d530148 | 2010-08-20 16:49:43 +0800 | [diff] [blame] | 300 | */ |
| 301 | mark_inode_dirty(inode); |
| 302 | } |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 303 | return ret; |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 306 | static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 307 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 308 | return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 309 | } |
| 310 | |
Eric Sandeen | 0e05842 | 2010-05-16 10:00:00 -0400 | [diff] [blame] | 311 | static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr) |
| 312 | { |
| 313 | dquot_alloc_space_nofail(inode, nr << inode->i_blkbits); |
| 314 | } |
| 315 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 316 | static inline int dquot_alloc_block(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 317 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 318 | return dquot_alloc_space(inode, nr << inode->i_blkbits); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 321 | static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr) |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 322 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 323 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0); |
Mingming Cao | f18df22 | 2009-01-13 16:43:09 +0100 | [diff] [blame] | 324 | } |
| 325 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 326 | static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr) |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 327 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 328 | int ret; |
| 329 | |
| 330 | ret = dquot_prealloc_block_nodirty(inode, nr); |
| 331 | if (!ret) |
Jan Kara | 43d2932 | 2010-07-21 14:22:21 +0200 | [diff] [blame] | 332 | mark_inode_dirty_sync(inode); |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 333 | return ret; |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 334 | } |
| 335 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 336 | static inline int dquot_reserve_block(struct inode *inode, qsize_t nr) |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 337 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 338 | return __dquot_alloc_space(inode, nr << inode->i_blkbits, |
| 339 | DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE); |
Mingming Cao | 740d9dc | 2009-01-13 16:43:14 +0100 | [diff] [blame] | 340 | } |
| 341 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 342 | static inline int dquot_claim_block(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 343 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 344 | int ret; |
| 345 | |
| 346 | ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits); |
| 347 | if (!ret) |
Jan Kara | 43d2932 | 2010-07-21 14:22:21 +0200 | [diff] [blame] | 348 | mark_inode_dirty_sync(inode); |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 349 | return ret; |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 350 | } |
| 351 | |
Jan Kara | 1c8924e | 2013-08-17 09:32:32 -0400 | [diff] [blame] | 352 | static inline void dquot_reclaim_block(struct inode *inode, qsize_t nr) |
| 353 | { |
| 354 | dquot_reclaim_space_nodirty(inode, nr << inode->i_blkbits); |
| 355 | mark_inode_dirty_sync(inode); |
| 356 | } |
| 357 | |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 358 | static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr) |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 359 | { |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 360 | __dquot_free_space(inode, nr, 0); |
| 361 | } |
| 362 | |
| 363 | static inline void dquot_free_space(struct inode *inode, qsize_t nr) |
| 364 | { |
| 365 | dquot_free_space_nodirty(inode, nr); |
Jan Kara | 43d2932 | 2010-07-21 14:22:21 +0200 | [diff] [blame] | 366 | mark_inode_dirty_sync(inode); |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr) |
| 370 | { |
| 371 | dquot_free_space_nodirty(inode, nr << inode->i_blkbits); |
| 372 | } |
| 373 | |
| 374 | static inline void dquot_free_block(struct inode *inode, qsize_t nr) |
| 375 | { |
| 376 | dquot_free_space(inode, nr << inode->i_blkbits); |
| 377 | } |
| 378 | |
| 379 | static inline void dquot_release_reservation_block(struct inode *inode, |
| 380 | qsize_t nr) |
| 381 | { |
Eric Sandeen | 56246f9 | 2010-05-16 09:00:00 -0400 | [diff] [blame] | 382 | __dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE); |
Jan Kara | 03f6e92 | 2008-04-28 02:14:32 -0700 | [diff] [blame] | 383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Jan Kara | d3b8632 | 2014-10-08 16:07:12 +0200 | [diff] [blame] | 385 | unsigned int qtype_enforce_flag(int type); |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | #endif /* _LINUX_QUOTAOPS_ */ |