Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Implementation of operations over global quota file |
| 3 | */ |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 4 | #include <linux/spinlock.h> |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 5 | #include <linux/fs.h> |
| 6 | #include <linux/quota.h> |
| 7 | #include <linux/quotaops.h> |
| 8 | #include <linux/dqblk_qtree.h> |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 9 | #include <linux/jiffies.h> |
| 10 | #include <linux/writeback.h> |
| 11 | #include <linux/workqueue.h> |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 12 | |
| 13 | #define MLOG_MASK_PREFIX ML_QUOTA |
| 14 | #include <cluster/masklog.h> |
| 15 | |
| 16 | #include "ocfs2_fs.h" |
| 17 | #include "ocfs2.h" |
| 18 | #include "alloc.h" |
Joel Becker | d6b32bb | 2008-10-17 14:55:01 -0700 | [diff] [blame] | 19 | #include "blockcheck.h" |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 20 | #include "inode.h" |
| 21 | #include "journal.h" |
| 22 | #include "file.h" |
| 23 | #include "sysfile.h" |
| 24 | #include "dlmglue.h" |
| 25 | #include "uptodate.h" |
Jan Kara | ada5082 | 2009-08-03 18:24:21 +0200 | [diff] [blame] | 26 | #include "super.h" |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 27 | #include "quota.h" |
| 28 | |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 29 | static struct workqueue_struct *ocfs2_quota_wq = NULL; |
| 30 | |
| 31 | static void qsync_work_fn(struct work_struct *work); |
| 32 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 33 | static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp) |
| 34 | { |
| 35 | struct ocfs2_global_disk_dqblk *d = dp; |
| 36 | struct mem_dqblk *m = &dquot->dq_dqb; |
| 37 | |
| 38 | /* Update from disk only entries not set by the admin */ |
| 39 | if (!test_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags)) { |
| 40 | m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); |
| 41 | m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); |
| 42 | } |
| 43 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) |
| 44 | m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); |
| 45 | if (!test_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags)) { |
| 46 | m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit); |
| 47 | m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit); |
| 48 | } |
| 49 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) |
| 50 | m->dqb_curspace = le64_to_cpu(d->dqb_curspace); |
| 51 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags)) |
| 52 | m->dqb_btime = le64_to_cpu(d->dqb_btime); |
| 53 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags)) |
| 54 | m->dqb_itime = le64_to_cpu(d->dqb_itime); |
| 55 | OCFS2_DQUOT(dquot)->dq_use_count = le32_to_cpu(d->dqb_use_count); |
| 56 | } |
| 57 | |
| 58 | static void ocfs2_global_mem2diskdqb(void *dp, struct dquot *dquot) |
| 59 | { |
| 60 | struct ocfs2_global_disk_dqblk *d = dp; |
| 61 | struct mem_dqblk *m = &dquot->dq_dqb; |
| 62 | |
| 63 | d->dqb_id = cpu_to_le32(dquot->dq_id); |
| 64 | d->dqb_use_count = cpu_to_le32(OCFS2_DQUOT(dquot)->dq_use_count); |
| 65 | d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); |
| 66 | d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); |
| 67 | d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); |
| 68 | d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit); |
| 69 | d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit); |
| 70 | d->dqb_curspace = cpu_to_le64(m->dqb_curspace); |
| 71 | d->dqb_btime = cpu_to_le64(m->dqb_btime); |
| 72 | d->dqb_itime = cpu_to_le64(m->dqb_itime); |
Jan Kara | 7669f54 | 2009-07-22 13:17:18 +0200 | [diff] [blame] | 73 | d->dqb_pad1 = d->dqb_pad2 = 0; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | static int ocfs2_global_is_id(void *dp, struct dquot *dquot) |
| 77 | { |
| 78 | struct ocfs2_global_disk_dqblk *d = dp; |
| 79 | struct ocfs2_mem_dqinfo *oinfo = |
| 80 | sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; |
| 81 | |
| 82 | if (qtree_entry_unused(&oinfo->dqi_gi, dp)) |
| 83 | return 0; |
| 84 | return le32_to_cpu(d->dqb_id) == dquot->dq_id; |
| 85 | } |
| 86 | |
| 87 | struct qtree_fmt_operations ocfs2_global_ops = { |
| 88 | .mem2disk_dqblk = ocfs2_global_mem2diskdqb, |
| 89 | .disk2mem_dqblk = ocfs2_global_disk2memdqb, |
| 90 | .is_id = ocfs2_global_is_id, |
| 91 | }; |
| 92 | |
Joel Becker | 684ef27 | 2008-12-02 17:44:05 -0800 | [diff] [blame] | 93 | static int ocfs2_validate_quota_block(struct super_block *sb, |
| 94 | struct buffer_head *bh) |
| 95 | { |
Joel Becker | d6b32bb | 2008-10-17 14:55:01 -0700 | [diff] [blame] | 96 | struct ocfs2_disk_dqtrailer *dqt = |
| 97 | ocfs2_block_dqtrailer(sb->s_blocksize, bh->b_data); |
Joel Becker | 684ef27 | 2008-12-02 17:44:05 -0800 | [diff] [blame] | 98 | |
| 99 | mlog(0, "Validating quota block %llu\n", |
| 100 | (unsigned long long)bh->b_blocknr); |
| 101 | |
Joel Becker | d6b32bb | 2008-10-17 14:55:01 -0700 | [diff] [blame] | 102 | BUG_ON(!buffer_uptodate(bh)); |
| 103 | |
| 104 | /* |
| 105 | * If the ecc fails, we return the error but otherwise |
| 106 | * leave the filesystem running. We know any error is |
| 107 | * local to this block. |
| 108 | */ |
| 109 | return ocfs2_validate_meta_ecc(sb, bh->b_data, &dqt->dq_check); |
Joel Becker | 684ef27 | 2008-12-02 17:44:05 -0800 | [diff] [blame] | 110 | } |
| 111 | |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 112 | int ocfs2_read_quota_block(struct inode *inode, u64 v_block, |
| 113 | struct buffer_head **bh) |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 114 | { |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 115 | int rc = 0; |
| 116 | struct buffer_head *tmp = *bh; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 117 | |
Jan Kara | ada5082 | 2009-08-03 18:24:21 +0200 | [diff] [blame] | 118 | if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) { |
| 119 | ocfs2_error(inode->i_sb, |
| 120 | "Quota file %llu is probably corrupted! Requested " |
| 121 | "to read block %Lu but file has size only %Lu\n", |
| 122 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 123 | (unsigned long long)v_block, |
| 124 | (unsigned long long)i_size_read(inode)); |
| 125 | return -EIO; |
| 126 | } |
Joel Becker | 684ef27 | 2008-12-02 17:44:05 -0800 | [diff] [blame] | 127 | rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, |
| 128 | ocfs2_validate_quota_block); |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 129 | if (rc) |
| 130 | mlog_errno(rc); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 131 | |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 132 | /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ |
| 133 | if (!rc && !*bh) |
| 134 | *bh = tmp; |
| 135 | |
| 136 | return rc; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 137 | } |
| 138 | |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 139 | static int ocfs2_get_quota_block(struct inode *inode, int block, |
| 140 | struct buffer_head **bh) |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 141 | { |
| 142 | u64 pblock, pcount; |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 143 | int err; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 144 | |
| 145 | down_read(&OCFS2_I(inode)->ip_alloc_sem); |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 146 | err = ocfs2_extent_map_get_blocks(inode, block, &pblock, &pcount, NULL); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 147 | up_read(&OCFS2_I(inode)->ip_alloc_sem); |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 148 | if (err) { |
| 149 | mlog_errno(err); |
| 150 | return err; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 151 | } |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 152 | *bh = sb_getblk(inode->i_sb, pblock); |
| 153 | if (!*bh) { |
| 154 | err = -EIO; |
| 155 | mlog_errno(err); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 156 | } |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 157 | return err;; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | /* Read data from global quotafile - avoid pagecache and such because we cannot |
| 161 | * afford acquiring the locks... We use quota cluster lock to serialize |
| 162 | * operations. Caller is responsible for acquiring it. */ |
| 163 | ssize_t ocfs2_quota_read(struct super_block *sb, int type, char *data, |
| 164 | size_t len, loff_t off) |
| 165 | { |
| 166 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 167 | struct inode *gqinode = oinfo->dqi_gqinode; |
| 168 | loff_t i_size = i_size_read(gqinode); |
| 169 | int offset = off & (sb->s_blocksize - 1); |
| 170 | sector_t blk = off >> sb->s_blocksize_bits; |
| 171 | int err = 0; |
| 172 | struct buffer_head *bh; |
| 173 | size_t toread, tocopy; |
| 174 | |
| 175 | if (off > i_size) |
| 176 | return 0; |
| 177 | if (off + len > i_size) |
| 178 | len = i_size - off; |
| 179 | toread = len; |
| 180 | while (toread > 0) { |
Mark Fasheh | dad7d97 | 2008-12-24 16:33:08 -0800 | [diff] [blame] | 181 | tocopy = min_t(size_t, (sb->s_blocksize - offset), toread); |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 182 | bh = NULL; |
| 183 | err = ocfs2_read_quota_block(gqinode, blk, &bh); |
| 184 | if (err) { |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 185 | mlog_errno(err); |
| 186 | return err; |
| 187 | } |
| 188 | memcpy(data, bh->b_data + offset, tocopy); |
| 189 | brelse(bh); |
| 190 | offset = 0; |
| 191 | toread -= tocopy; |
| 192 | data += tocopy; |
| 193 | blk++; |
| 194 | } |
| 195 | return len; |
| 196 | } |
| 197 | |
| 198 | /* Write to quotafile (we know the transaction is already started and has |
| 199 | * enough credits) */ |
| 200 | ssize_t ocfs2_quota_write(struct super_block *sb, int type, |
| 201 | const char *data, size_t len, loff_t off) |
| 202 | { |
| 203 | struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| 204 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| 205 | struct inode *gqinode = oinfo->dqi_gqinode; |
| 206 | int offset = off & (sb->s_blocksize - 1); |
| 207 | sector_t blk = off >> sb->s_blocksize_bits; |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 208 | int err = 0, new = 0, ja_type; |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 209 | struct buffer_head *bh = NULL; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 210 | handle_t *handle = journal_current_handle(); |
| 211 | |
| 212 | if (!handle) { |
| 213 | mlog(ML_ERROR, "Quota write (off=%llu, len=%llu) cancelled " |
| 214 | "because transaction was not started.\n", |
| 215 | (unsigned long long)off, (unsigned long long)len); |
| 216 | return -EIO; |
| 217 | } |
| 218 | if (len > sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset) { |
| 219 | WARN_ON(1); |
| 220 | len = sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE - offset; |
| 221 | } |
| 222 | |
| 223 | mutex_lock_nested(&gqinode->i_mutex, I_MUTEX_QUOTA); |
| 224 | if (gqinode->i_size < off + len) { |
Jan Kara | b57ac2c | 2009-07-22 13:17:15 +0200 | [diff] [blame] | 225 | loff_t rounded_end = |
| 226 | ocfs2_align_bytes_to_blocks(sb, off + len); |
| 227 | |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 228 | /* Space is already allocated in ocfs2_global_read_dquot() */ |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 229 | err = ocfs2_simple_size_update(gqinode, |
| 230 | oinfo->dqi_gqi_bh, |
Jan Kara | b57ac2c | 2009-07-22 13:17:15 +0200 | [diff] [blame] | 231 | rounded_end); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 232 | if (err < 0) |
| 233 | goto out; |
| 234 | new = 1; |
| 235 | } |
| 236 | /* Not rewriting whole block? */ |
| 237 | if ((offset || len < sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) && |
| 238 | !new) { |
Joel Becker | 85eb8b7 | 2008-11-25 15:31:27 +0100 | [diff] [blame] | 239 | err = ocfs2_read_quota_block(gqinode, blk, &bh); |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 240 | ja_type = OCFS2_JOURNAL_ACCESS_WRITE; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 241 | } else { |
Jan Kara | 53a3604 | 2008-11-25 15:31:29 +0100 | [diff] [blame] | 242 | err = ocfs2_get_quota_block(gqinode, blk, &bh); |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 243 | ja_type = OCFS2_JOURNAL_ACCESS_CREATE; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 244 | } |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 245 | if (err) { |
| 246 | mlog_errno(err); |
Tao Ma | e9956fa | 2009-07-30 16:07:10 +0800 | [diff] [blame] | 247 | goto out; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 248 | } |
| 249 | lock_buffer(bh); |
| 250 | if (new) |
| 251 | memset(bh->b_data, 0, sb->s_blocksize); |
| 252 | memcpy(bh->b_data + offset, data, len); |
| 253 | flush_dcache_page(bh->b_page); |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 254 | set_buffer_uptodate(bh); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 255 | unlock_buffer(bh); |
Joel Becker | 8cb471e | 2009-02-10 20:00:41 -0800 | [diff] [blame^] | 256 | ocfs2_set_buffer_uptodate(INODE_CACHE(gqinode), bh); |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 257 | err = ocfs2_journal_access_dq(handle, gqinode, bh, ja_type); |
Jan Kara | af09e51 | 2008-11-25 15:31:28 +0100 | [diff] [blame] | 258 | if (err < 0) { |
| 259 | brelse(bh); |
| 260 | goto out; |
| 261 | } |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 262 | err = ocfs2_journal_dirty(handle, bh); |
| 263 | brelse(bh); |
| 264 | if (err < 0) |
| 265 | goto out; |
| 266 | out: |
| 267 | if (err) { |
| 268 | mutex_unlock(&gqinode->i_mutex); |
| 269 | mlog_errno(err); |
| 270 | return err; |
| 271 | } |
| 272 | gqinode->i_version++; |
| 273 | ocfs2_mark_inode_dirty(handle, gqinode, oinfo->dqi_gqi_bh); |
| 274 | mutex_unlock(&gqinode->i_mutex); |
| 275 | return len; |
| 276 | } |
| 277 | |
| 278 | int ocfs2_lock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) |
| 279 | { |
| 280 | int status; |
| 281 | struct buffer_head *bh = NULL; |
| 282 | |
| 283 | status = ocfs2_inode_lock(oinfo->dqi_gqinode, &bh, ex); |
| 284 | if (status < 0) |
| 285 | return status; |
| 286 | spin_lock(&dq_data_lock); |
| 287 | if (!oinfo->dqi_gqi_count++) |
| 288 | oinfo->dqi_gqi_bh = bh; |
| 289 | else |
| 290 | WARN_ON(bh != oinfo->dqi_gqi_bh); |
| 291 | spin_unlock(&dq_data_lock); |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex) |
| 296 | { |
| 297 | ocfs2_inode_unlock(oinfo->dqi_gqinode, ex); |
| 298 | brelse(oinfo->dqi_gqi_bh); |
| 299 | spin_lock(&dq_data_lock); |
| 300 | if (!--oinfo->dqi_gqi_count) |
| 301 | oinfo->dqi_gqi_bh = NULL; |
| 302 | spin_unlock(&dq_data_lock); |
| 303 | } |
| 304 | |
| 305 | /* Read information header from global quota file */ |
| 306 | int ocfs2_global_read_info(struct super_block *sb, int type) |
| 307 | { |
| 308 | struct inode *gqinode = NULL; |
| 309 | unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, |
| 310 | GROUP_QUOTA_SYSTEM_INODE }; |
| 311 | struct ocfs2_global_disk_dqinfo dinfo; |
| 312 | struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| 313 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| 314 | int status; |
| 315 | |
| 316 | mlog_entry_void(); |
| 317 | |
| 318 | /* Read global header */ |
| 319 | gqinode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], |
| 320 | OCFS2_INVALID_SLOT); |
| 321 | if (!gqinode) { |
| 322 | mlog(ML_ERROR, "failed to get global quota inode (type=%d)\n", |
| 323 | type); |
| 324 | status = -EINVAL; |
| 325 | goto out_err; |
| 326 | } |
| 327 | oinfo->dqi_gi.dqi_sb = sb; |
| 328 | oinfo->dqi_gi.dqi_type = type; |
| 329 | ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo); |
| 330 | oinfo->dqi_gi.dqi_entry_size = sizeof(struct ocfs2_global_disk_dqblk); |
| 331 | oinfo->dqi_gi.dqi_ops = &ocfs2_global_ops; |
| 332 | oinfo->dqi_gqi_bh = NULL; |
| 333 | oinfo->dqi_gqi_count = 0; |
| 334 | oinfo->dqi_gqinode = gqinode; |
| 335 | status = ocfs2_lock_global_qf(oinfo, 0); |
| 336 | if (status < 0) { |
| 337 | mlog_errno(status); |
| 338 | goto out_err; |
| 339 | } |
| 340 | status = sb->s_op->quota_read(sb, type, (char *)&dinfo, |
| 341 | sizeof(struct ocfs2_global_disk_dqinfo), |
| 342 | OCFS2_GLOBAL_INFO_OFF); |
| 343 | ocfs2_unlock_global_qf(oinfo, 0); |
| 344 | if (status != sizeof(struct ocfs2_global_disk_dqinfo)) { |
| 345 | mlog(ML_ERROR, "Cannot read global quota info (%d).\n", |
| 346 | status); |
| 347 | if (status >= 0) |
| 348 | status = -EIO; |
| 349 | mlog_errno(status); |
| 350 | goto out_err; |
| 351 | } |
| 352 | info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); |
| 353 | info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); |
| 354 | oinfo->dqi_syncms = le32_to_cpu(dinfo.dqi_syncms); |
| 355 | oinfo->dqi_gi.dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); |
| 356 | oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); |
| 357 | oinfo->dqi_gi.dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); |
| 358 | oinfo->dqi_gi.dqi_blocksize_bits = sb->s_blocksize_bits; |
| 359 | oinfo->dqi_gi.dqi_usable_bs = sb->s_blocksize - |
| 360 | OCFS2_QBLK_RESERVED_SPACE; |
| 361 | oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi); |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 362 | INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn); |
| 363 | queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work, |
Jan Kara | 4539f1d | 2009-07-22 13:17:20 +0200 | [diff] [blame] | 364 | msecs_to_jiffies(oinfo->dqi_syncms)); |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 365 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 366 | out_err: |
| 367 | mlog_exit(status); |
| 368 | return status; |
| 369 | } |
| 370 | |
| 371 | /* Write information to global quota file. Expects exlusive lock on quota |
| 372 | * file inode and quota info */ |
| 373 | static int __ocfs2_global_write_info(struct super_block *sb, int type) |
| 374 | { |
| 375 | struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| 376 | struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| 377 | struct ocfs2_global_disk_dqinfo dinfo; |
| 378 | ssize_t size; |
| 379 | |
| 380 | spin_lock(&dq_data_lock); |
| 381 | info->dqi_flags &= ~DQF_INFO_DIRTY; |
| 382 | dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); |
| 383 | dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); |
| 384 | spin_unlock(&dq_data_lock); |
| 385 | dinfo.dqi_syncms = cpu_to_le32(oinfo->dqi_syncms); |
| 386 | dinfo.dqi_blocks = cpu_to_le32(oinfo->dqi_gi.dqi_blocks); |
| 387 | dinfo.dqi_free_blk = cpu_to_le32(oinfo->dqi_gi.dqi_free_blk); |
| 388 | dinfo.dqi_free_entry = cpu_to_le32(oinfo->dqi_gi.dqi_free_entry); |
| 389 | size = sb->s_op->quota_write(sb, type, (char *)&dinfo, |
| 390 | sizeof(struct ocfs2_global_disk_dqinfo), |
| 391 | OCFS2_GLOBAL_INFO_OFF); |
| 392 | if (size != sizeof(struct ocfs2_global_disk_dqinfo)) { |
| 393 | mlog(ML_ERROR, "Cannot write global quota info structure\n"); |
| 394 | if (size >= 0) |
| 395 | size = -EIO; |
| 396 | return size; |
| 397 | } |
| 398 | return 0; |
| 399 | } |
| 400 | |
| 401 | int ocfs2_global_write_info(struct super_block *sb, int type) |
| 402 | { |
| 403 | int err; |
| 404 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
| 405 | |
| 406 | err = ocfs2_qinfo_lock(info, 1); |
| 407 | if (err < 0) |
| 408 | return err; |
| 409 | err = __ocfs2_global_write_info(sb, type); |
| 410 | ocfs2_qinfo_unlock(info, 1); |
| 411 | return err; |
| 412 | } |
| 413 | |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 414 | static int ocfs2_global_qinit_alloc(struct super_block *sb, int type) |
| 415 | { |
| 416 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 417 | |
| 418 | /* |
| 419 | * We may need to allocate tree blocks and a leaf block but not the |
| 420 | * root block |
| 421 | */ |
| 422 | return oinfo->dqi_gi.dqi_qtree_depth; |
| 423 | } |
| 424 | |
| 425 | static int ocfs2_calc_global_qinit_credits(struct super_block *sb, int type) |
| 426 | { |
| 427 | /* We modify all the allocated blocks, tree root, and info block */ |
| 428 | return (ocfs2_global_qinit_alloc(sb, type) + 2) * |
| 429 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS; |
| 430 | } |
| 431 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 432 | /* Read in information from global quota file and acquire a reference to it. |
| 433 | * dquot_acquire() has already started the transaction and locked quota file */ |
| 434 | int ocfs2_global_read_dquot(struct dquot *dquot) |
| 435 | { |
| 436 | int err, err2, ex = 0; |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 437 | struct super_block *sb = dquot->dq_sb; |
| 438 | int type = dquot->dq_type; |
| 439 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
| 440 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 441 | struct inode *gqinode = info->dqi_gqinode; |
| 442 | int need_alloc = ocfs2_global_qinit_alloc(sb, type); |
| 443 | handle_t *handle = NULL; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 444 | |
| 445 | err = ocfs2_qinfo_lock(info, 0); |
| 446 | if (err < 0) |
| 447 | goto out; |
| 448 | err = qtree_read_dquot(&info->dqi_gi, dquot); |
| 449 | if (err < 0) |
| 450 | goto out_qlock; |
| 451 | OCFS2_DQUOT(dquot)->dq_use_count++; |
| 452 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; |
| 453 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 454 | ocfs2_qinfo_unlock(info, 0); |
| 455 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 456 | if (!dquot->dq_off) { /* No real quota entry? */ |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 457 | ex = 1; |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 458 | /* |
| 459 | * Add blocks to quota file before we start a transaction since |
| 460 | * locking allocators ranks above a transaction start |
| 461 | */ |
| 462 | WARN_ON(journal_current_handle()); |
| 463 | down_write(&OCFS2_I(gqinode)->ip_alloc_sem); |
| 464 | err = ocfs2_extend_no_holes(gqinode, |
| 465 | gqinode->i_size + (need_alloc << sb->s_blocksize_bits), |
| 466 | gqinode->i_size); |
| 467 | up_write(&OCFS2_I(gqinode)->ip_alloc_sem); |
| 468 | if (err < 0) |
| 469 | goto out; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 470 | } |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 471 | |
| 472 | handle = ocfs2_start_trans(osb, |
| 473 | ocfs2_calc_global_qinit_credits(sb, type)); |
| 474 | if (IS_ERR(handle)) { |
| 475 | err = PTR_ERR(handle); |
| 476 | goto out; |
| 477 | } |
| 478 | err = ocfs2_qinfo_lock(info, ex); |
| 479 | if (err < 0) |
| 480 | goto out_trans; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 481 | err = qtree_write_dquot(&info->dqi_gi, dquot); |
| 482 | if (ex && info_dirty(sb_dqinfo(dquot->dq_sb, dquot->dq_type))) { |
| 483 | err2 = __ocfs2_global_write_info(dquot->dq_sb, dquot->dq_type); |
| 484 | if (!err) |
| 485 | err = err2; |
| 486 | } |
| 487 | out_qlock: |
| 488 | if (ex) |
| 489 | ocfs2_qinfo_unlock(info, 1); |
Jan Kara | 4e8a301 | 2009-06-02 14:23:59 +0200 | [diff] [blame] | 490 | else |
| 491 | ocfs2_qinfo_unlock(info, 0); |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 492 | out_trans: |
| 493 | if (handle) |
| 494 | ocfs2_commit_trans(osb, handle); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 495 | out: |
| 496 | if (err < 0) |
| 497 | mlog_errno(err); |
| 498 | return err; |
| 499 | } |
| 500 | |
| 501 | /* Sync local information about quota modifications with global quota file. |
| 502 | * Caller must have started the transaction and obtained exclusive lock for |
| 503 | * global quota file inode */ |
| 504 | int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) |
| 505 | { |
| 506 | int err, err2; |
| 507 | struct super_block *sb = dquot->dq_sb; |
| 508 | int type = dquot->dq_type; |
| 509 | struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; |
| 510 | struct ocfs2_global_disk_dqblk dqblk; |
| 511 | s64 spacechange, inodechange; |
| 512 | time_t olditime, oldbtime; |
| 513 | |
| 514 | err = sb->s_op->quota_read(sb, type, (char *)&dqblk, |
| 515 | sizeof(struct ocfs2_global_disk_dqblk), |
| 516 | dquot->dq_off); |
| 517 | if (err != sizeof(struct ocfs2_global_disk_dqblk)) { |
| 518 | if (err >= 0) { |
| 519 | mlog(ML_ERROR, "Short read from global quota file " |
| 520 | "(%u read)\n", err); |
| 521 | err = -EIO; |
| 522 | } |
| 523 | goto out; |
| 524 | } |
| 525 | |
| 526 | /* Update space and inode usage. Get also other information from |
| 527 | * global quota file so that we don't overwrite any changes there. |
| 528 | * We are */ |
| 529 | spin_lock(&dq_data_lock); |
| 530 | spacechange = dquot->dq_dqb.dqb_curspace - |
| 531 | OCFS2_DQUOT(dquot)->dq_origspace; |
| 532 | inodechange = dquot->dq_dqb.dqb_curinodes - |
| 533 | OCFS2_DQUOT(dquot)->dq_originodes; |
| 534 | olditime = dquot->dq_dqb.dqb_itime; |
| 535 | oldbtime = dquot->dq_dqb.dqb_btime; |
| 536 | ocfs2_global_disk2memdqb(dquot, &dqblk); |
Jan Kara | 9a2f386 | 2008-11-25 15:31:30 +0100 | [diff] [blame] | 537 | mlog(0, "Syncing global dquot %u space %lld+%lld, inodes %lld+%lld\n", |
| 538 | dquot->dq_id, dquot->dq_dqb.dqb_curspace, (long long)spacechange, |
| 539 | dquot->dq_dqb.dqb_curinodes, (long long)inodechange); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 540 | if (!test_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags)) |
| 541 | dquot->dq_dqb.dqb_curspace += spacechange; |
| 542 | if (!test_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags)) |
| 543 | dquot->dq_dqb.dqb_curinodes += inodechange; |
| 544 | /* Set properly space grace time... */ |
| 545 | if (dquot->dq_dqb.dqb_bsoftlimit && |
| 546 | dquot->dq_dqb.dqb_curspace > dquot->dq_dqb.dqb_bsoftlimit) { |
| 547 | if (!test_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags) && |
| 548 | oldbtime > 0) { |
| 549 | if (dquot->dq_dqb.dqb_btime > 0) |
| 550 | dquot->dq_dqb.dqb_btime = |
| 551 | min(dquot->dq_dqb.dqb_btime, oldbtime); |
| 552 | else |
| 553 | dquot->dq_dqb.dqb_btime = oldbtime; |
| 554 | } |
| 555 | } else { |
| 556 | dquot->dq_dqb.dqb_btime = 0; |
| 557 | clear_bit(DQ_BLKS_B, &dquot->dq_flags); |
| 558 | } |
| 559 | /* Set properly inode grace time... */ |
| 560 | if (dquot->dq_dqb.dqb_isoftlimit && |
| 561 | dquot->dq_dqb.dqb_curinodes > dquot->dq_dqb.dqb_isoftlimit) { |
| 562 | if (!test_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags) && |
| 563 | olditime > 0) { |
| 564 | if (dquot->dq_dqb.dqb_itime > 0) |
| 565 | dquot->dq_dqb.dqb_itime = |
| 566 | min(dquot->dq_dqb.dqb_itime, olditime); |
| 567 | else |
| 568 | dquot->dq_dqb.dqb_itime = olditime; |
| 569 | } |
| 570 | } else { |
| 571 | dquot->dq_dqb.dqb_itime = 0; |
| 572 | clear_bit(DQ_INODES_B, &dquot->dq_flags); |
| 573 | } |
| 574 | /* All information is properly updated, clear the flags */ |
| 575 | __clear_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags); |
| 576 | __clear_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags); |
| 577 | __clear_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags); |
| 578 | __clear_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags); |
| 579 | __clear_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags); |
| 580 | __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); |
| 581 | OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; |
| 582 | OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; |
| 583 | spin_unlock(&dq_data_lock); |
| 584 | err = ocfs2_qinfo_lock(info, freeing); |
| 585 | if (err < 0) { |
| 586 | mlog(ML_ERROR, "Failed to lock quota info, loosing quota write" |
| 587 | " (type=%d, id=%u)\n", dquot->dq_type, |
| 588 | (unsigned)dquot->dq_id); |
| 589 | goto out; |
| 590 | } |
| 591 | if (freeing) |
| 592 | OCFS2_DQUOT(dquot)->dq_use_count--; |
| 593 | err = qtree_write_dquot(&info->dqi_gi, dquot); |
| 594 | if (err < 0) |
| 595 | goto out_qlock; |
| 596 | if (freeing && !OCFS2_DQUOT(dquot)->dq_use_count) { |
| 597 | err = qtree_release_dquot(&info->dqi_gi, dquot); |
| 598 | if (info_dirty(sb_dqinfo(sb, type))) { |
| 599 | err2 = __ocfs2_global_write_info(sb, type); |
| 600 | if (!err) |
| 601 | err = err2; |
| 602 | } |
| 603 | } |
| 604 | out_qlock: |
| 605 | ocfs2_qinfo_unlock(info, freeing); |
| 606 | out: |
| 607 | if (err < 0) |
| 608 | mlog_errno(err); |
| 609 | return err; |
| 610 | } |
| 611 | |
| 612 | /* |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 613 | * Functions for periodic syncing of dquots with global file |
| 614 | */ |
| 615 | static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type) |
| 616 | { |
| 617 | handle_t *handle; |
| 618 | struct super_block *sb = dquot->dq_sb; |
| 619 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 620 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 621 | int status = 0; |
| 622 | |
| 623 | mlog_entry("id=%u qtype=%u type=%lu device=%s\n", dquot->dq_id, |
| 624 | dquot->dq_type, type, sb->s_id); |
| 625 | if (type != dquot->dq_type) |
| 626 | goto out; |
| 627 | status = ocfs2_lock_global_qf(oinfo, 1); |
| 628 | if (status < 0) |
| 629 | goto out; |
| 630 | |
| 631 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); |
| 632 | if (IS_ERR(handle)) { |
| 633 | status = PTR_ERR(handle); |
| 634 | mlog_errno(status); |
| 635 | goto out_ilock; |
| 636 | } |
| 637 | mutex_lock(&sb_dqopt(sb)->dqio_mutex); |
| 638 | status = ocfs2_sync_dquot(dquot); |
| 639 | mutex_unlock(&sb_dqopt(sb)->dqio_mutex); |
| 640 | if (status < 0) |
| 641 | mlog_errno(status); |
| 642 | /* We have to write local structure as well... */ |
| 643 | dquot_mark_dquot_dirty(dquot); |
| 644 | status = dquot_commit(dquot); |
| 645 | if (status < 0) |
| 646 | mlog_errno(status); |
| 647 | ocfs2_commit_trans(osb, handle); |
| 648 | out_ilock: |
| 649 | ocfs2_unlock_global_qf(oinfo, 1); |
| 650 | out: |
| 651 | mlog_exit(status); |
| 652 | return status; |
| 653 | } |
| 654 | |
| 655 | static void qsync_work_fn(struct work_struct *work) |
| 656 | { |
| 657 | struct ocfs2_mem_dqinfo *oinfo = container_of(work, |
| 658 | struct ocfs2_mem_dqinfo, |
| 659 | dqi_sync_work.work); |
| 660 | struct super_block *sb = oinfo->dqi_gqinode->i_sb; |
| 661 | |
| 662 | dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type); |
| 663 | queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work, |
Jan Kara | 4539f1d | 2009-07-22 13:17:20 +0200 | [diff] [blame] | 664 | msecs_to_jiffies(oinfo->dqi_syncms)); |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | /* |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 668 | * Wrappers for generic quota functions |
| 669 | */ |
| 670 | |
| 671 | static int ocfs2_write_dquot(struct dquot *dquot) |
| 672 | { |
| 673 | handle_t *handle; |
| 674 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); |
| 675 | int status = 0; |
| 676 | |
| 677 | mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); |
| 678 | |
| 679 | handle = ocfs2_start_trans(osb, OCFS2_QWRITE_CREDITS); |
| 680 | if (IS_ERR(handle)) { |
| 681 | status = PTR_ERR(handle); |
| 682 | mlog_errno(status); |
| 683 | goto out; |
| 684 | } |
| 685 | status = dquot_commit(dquot); |
| 686 | ocfs2_commit_trans(osb, handle); |
| 687 | out: |
| 688 | mlog_exit(status); |
| 689 | return status; |
| 690 | } |
| 691 | |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 692 | static int ocfs2_calc_qdel_credits(struct super_block *sb, int type) |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 693 | { |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 694 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
Jan Kara | 0584974 | 2009-07-22 13:17:21 +0200 | [diff] [blame] | 695 | /* |
| 696 | * We modify tree, leaf block, global info, local chunk header, |
| 697 | * global and local inode; OCFS2_QINFO_WRITE_CREDITS already |
| 698 | * accounts for inode update |
| 699 | */ |
Jan Kara | b409d7a | 2009-08-06 23:29:34 +0200 | [diff] [blame] | 700 | return (oinfo->dqi_gi.dqi_qtree_depth + 2) * |
| 701 | OCFS2_QUOTA_BLOCK_UPDATE_CREDITS + |
Jan Kara | 0584974 | 2009-07-22 13:17:21 +0200 | [diff] [blame] | 702 | OCFS2_QINFO_WRITE_CREDITS + |
Jan Kara | 0584974 | 2009-07-22 13:17:21 +0200 | [diff] [blame] | 703 | OCFS2_INODE_UPDATE_CREDITS; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | static int ocfs2_release_dquot(struct dquot *dquot) |
| 707 | { |
| 708 | handle_t *handle; |
| 709 | struct ocfs2_mem_dqinfo *oinfo = |
| 710 | sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; |
| 711 | struct ocfs2_super *osb = OCFS2_SB(dquot->dq_sb); |
| 712 | int status = 0; |
| 713 | |
| 714 | mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); |
| 715 | |
| 716 | status = ocfs2_lock_global_qf(oinfo, 1); |
| 717 | if (status < 0) |
| 718 | goto out; |
| 719 | handle = ocfs2_start_trans(osb, |
| 720 | ocfs2_calc_qdel_credits(dquot->dq_sb, dquot->dq_type)); |
| 721 | if (IS_ERR(handle)) { |
| 722 | status = PTR_ERR(handle); |
| 723 | mlog_errno(status); |
| 724 | goto out_ilock; |
| 725 | } |
| 726 | status = dquot_release(dquot); |
| 727 | ocfs2_commit_trans(osb, handle); |
| 728 | out_ilock: |
| 729 | ocfs2_unlock_global_qf(oinfo, 1); |
| 730 | out: |
| 731 | mlog_exit(status); |
| 732 | return status; |
| 733 | } |
| 734 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 735 | static int ocfs2_acquire_dquot(struct dquot *dquot) |
| 736 | { |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 737 | struct ocfs2_mem_dqinfo *oinfo = |
| 738 | sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 739 | int status = 0; |
| 740 | |
| 741 | mlog_entry("id=%u, type=%d", dquot->dq_id, dquot->dq_type); |
| 742 | /* We need an exclusive lock, because we're going to update use count |
| 743 | * and instantiate possibly new dquot structure */ |
| 744 | status = ocfs2_lock_global_qf(oinfo, 1); |
| 745 | if (status < 0) |
| 746 | goto out; |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 747 | status = dquot_acquire(dquot); |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 748 | ocfs2_unlock_global_qf(oinfo, 1); |
| 749 | out: |
| 750 | mlog_exit(status); |
| 751 | return status; |
| 752 | } |
| 753 | |
| 754 | static int ocfs2_mark_dquot_dirty(struct dquot *dquot) |
| 755 | { |
| 756 | unsigned long mask = (1 << (DQ_LASTSET_B + QIF_ILIMITS_B)) | |
| 757 | (1 << (DQ_LASTSET_B + QIF_BLIMITS_B)) | |
| 758 | (1 << (DQ_LASTSET_B + QIF_INODES_B)) | |
| 759 | (1 << (DQ_LASTSET_B + QIF_SPACE_B)) | |
| 760 | (1 << (DQ_LASTSET_B + QIF_BTIME_B)) | |
| 761 | (1 << (DQ_LASTSET_B + QIF_ITIME_B)); |
| 762 | int sync = 0; |
| 763 | int status; |
| 764 | struct super_block *sb = dquot->dq_sb; |
| 765 | int type = dquot->dq_type; |
| 766 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 767 | handle_t *handle; |
| 768 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 769 | |
| 770 | mlog_entry("id=%u, type=%d", dquot->dq_id, type); |
| 771 | dquot_mark_dquot_dirty(dquot); |
| 772 | |
| 773 | /* In case user set some limits, sync dquot immediately to global |
| 774 | * quota file so that information propagates quicker */ |
| 775 | spin_lock(&dq_data_lock); |
| 776 | if (dquot->dq_flags & mask) |
| 777 | sync = 1; |
| 778 | spin_unlock(&dq_data_lock); |
Jan Kara | f8afead | 2009-01-12 23:20:32 +0100 | [diff] [blame] | 779 | /* This is a slight hack but we can't afford getting global quota |
| 780 | * lock if we already have a transaction started. */ |
| 781 | if (!sync || journal_current_handle()) { |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 782 | status = ocfs2_write_dquot(dquot); |
| 783 | goto out; |
| 784 | } |
| 785 | status = ocfs2_lock_global_qf(oinfo, 1); |
| 786 | if (status < 0) |
| 787 | goto out; |
| 788 | handle = ocfs2_start_trans(osb, OCFS2_QSYNC_CREDITS); |
| 789 | if (IS_ERR(handle)) { |
| 790 | status = PTR_ERR(handle); |
| 791 | mlog_errno(status); |
| 792 | goto out_ilock; |
| 793 | } |
| 794 | status = ocfs2_sync_dquot(dquot); |
| 795 | if (status < 0) { |
| 796 | mlog_errno(status); |
| 797 | goto out_trans; |
| 798 | } |
| 799 | /* Now write updated local dquot structure */ |
| 800 | status = dquot_commit(dquot); |
| 801 | out_trans: |
| 802 | ocfs2_commit_trans(osb, handle); |
| 803 | out_ilock: |
| 804 | ocfs2_unlock_global_qf(oinfo, 1); |
| 805 | out: |
| 806 | mlog_exit(status); |
| 807 | return status; |
| 808 | } |
| 809 | |
| 810 | /* This should happen only after set_dqinfo(). */ |
| 811 | static int ocfs2_write_info(struct super_block *sb, int type) |
| 812 | { |
| 813 | handle_t *handle; |
| 814 | int status = 0; |
| 815 | struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 816 | |
| 817 | mlog_entry_void(); |
| 818 | |
| 819 | status = ocfs2_lock_global_qf(oinfo, 1); |
| 820 | if (status < 0) |
| 821 | goto out; |
| 822 | handle = ocfs2_start_trans(OCFS2_SB(sb), OCFS2_QINFO_WRITE_CREDITS); |
| 823 | if (IS_ERR(handle)) { |
| 824 | status = PTR_ERR(handle); |
| 825 | mlog_errno(status); |
| 826 | goto out_ilock; |
| 827 | } |
| 828 | status = dquot_commit_info(sb, type); |
| 829 | ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| 830 | out_ilock: |
| 831 | ocfs2_unlock_global_qf(oinfo, 1); |
| 832 | out: |
| 833 | mlog_exit(status); |
| 834 | return status; |
| 835 | } |
| 836 | |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 837 | static struct dquot *ocfs2_alloc_dquot(struct super_block *sb, int type) |
| 838 | { |
| 839 | struct ocfs2_dquot *dquot = |
| 840 | kmem_cache_zalloc(ocfs2_dquot_cachep, GFP_NOFS); |
| 841 | |
| 842 | if (!dquot) |
| 843 | return NULL; |
| 844 | return &dquot->dq_dquot; |
| 845 | } |
| 846 | |
| 847 | static void ocfs2_destroy_dquot(struct dquot *dquot) |
| 848 | { |
| 849 | kmem_cache_free(ocfs2_dquot_cachep, dquot); |
| 850 | } |
| 851 | |
| 852 | struct dquot_operations ocfs2_quota_operations = { |
Jan Kara | c475146 | 2009-01-12 17:44:34 +0100 | [diff] [blame] | 853 | .initialize = dquot_initialize, |
| 854 | .drop = dquot_drop, |
Jan Kara | 9e33d69 | 2008-08-25 19:56:50 +0200 | [diff] [blame] | 855 | .alloc_space = dquot_alloc_space, |
| 856 | .alloc_inode = dquot_alloc_inode, |
| 857 | .free_space = dquot_free_space, |
| 858 | .free_inode = dquot_free_inode, |
| 859 | .transfer = dquot_transfer, |
| 860 | .write_dquot = ocfs2_write_dquot, |
| 861 | .acquire_dquot = ocfs2_acquire_dquot, |
| 862 | .release_dquot = ocfs2_release_dquot, |
| 863 | .mark_dirty = ocfs2_mark_dquot_dirty, |
| 864 | .write_info = ocfs2_write_info, |
| 865 | .alloc_dquot = ocfs2_alloc_dquot, |
| 866 | .destroy_dquot = ocfs2_destroy_dquot, |
| 867 | }; |
Mark Fasheh | 171bf93 | 2008-10-20 15:36:47 +0200 | [diff] [blame] | 868 | |
| 869 | int ocfs2_quota_setup(void) |
| 870 | { |
| 871 | ocfs2_quota_wq = create_workqueue("o2quot"); |
| 872 | if (!ocfs2_quota_wq) |
| 873 | return -ENOMEM; |
| 874 | return 0; |
| 875 | } |
| 876 | |
| 877 | void ocfs2_quota_shutdown(void) |
| 878 | { |
| 879 | if (ocfs2_quota_wq) { |
| 880 | flush_workqueue(ocfs2_quota_wq); |
| 881 | destroy_workqueue(ocfs2_quota_wq); |
| 882 | ocfs2_quota_wq = NULL; |
| 883 | } |
| 884 | } |