| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Implementation of operations over local quota file |
| */ |
| |
| #include <linux/fs.h> |
| #include <linux/slab.h> |
| #include <linux/quota.h> |
| #include <linux/quotaops.h> |
| #include <linux/module.h> |
| |
| #include <cluster/masklog.h> |
| |
| #include "ocfs2_fs.h" |
| #include "ocfs2.h" |
| #include "inode.h" |
| #include "alloc.h" |
| #include "file.h" |
| #include "buffer_head_io.h" |
| #include "journal.h" |
| #include "sysfile.h" |
| #include "dlmglue.h" |
| #include "quota.h" |
| #include "uptodate.h" |
| #include "super.h" |
| #include "ocfs2_trace.h" |
| |
| /* Number of local quota structures per block */ |
| static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) |
| { |
| return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / |
| sizeof(struct ocfs2_local_disk_dqblk)); |
| } |
| |
| /* Number of blocks with entries in one chunk */ |
| static inline unsigned int ol_chunk_blocks(struct super_block *sb) |
| { |
| return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - |
| OCFS2_QBLK_RESERVED_SPACE) << 3) / |
| ol_quota_entries_per_block(sb); |
| } |
| |
| /* Number of entries in a chunk bitmap */ |
| static unsigned int ol_chunk_entries(struct super_block *sb) |
| { |
| return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); |
| } |
| |
| /* Offset of the chunk in quota file */ |
| static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) |
| { |
| /* 1 block for local quota file info, 1 block per chunk for chunk info */ |
| return 1 + (ol_chunk_blocks(sb) + 1) * c; |
| } |
| |
| static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
| { |
| int epb = ol_quota_entries_per_block(sb); |
| |
| return ol_quota_chunk_block(sb, c) + 1 + off / epb; |
| } |
| |
| static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) |
| { |
| int epb = ol_quota_entries_per_block(sb); |
| |
| return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
| } |
| |
| /* Offset of the dquot structure in the quota file */ |
| static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) |
| { |
| return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + |
| ol_dqblk_block_off(sb, c, off); |
| } |
| |
| static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) |
| { |
| return off & ((1 << sb->s_blocksize_bits) - 1); |
| } |
| |
| /* Compute offset in the chunk of a structure with the given offset */ |
| static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) |
| { |
| int epb = ol_quota_entries_per_block(sb); |
| |
| return ((off >> sb->s_blocksize_bits) - |
| ol_quota_chunk_block(sb, c) - 1) * epb |
| + ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / |
| sizeof(struct ocfs2_local_disk_dqblk); |
| } |
| |
| /* Write bufferhead into the fs */ |
| static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, |
| void (*modify)(struct buffer_head *, void *), void *private) |
| { |
| struct super_block *sb = inode->i_sb; |
| handle_t *handle; |
| int status; |
| |
| handle = ocfs2_start_trans(OCFS2_SB(sb), |
| OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
| if (IS_ERR(handle)) { |
| status = PTR_ERR(handle); |
| mlog_errno(status); |
| return status; |
| } |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
| OCFS2_JOURNAL_ACCESS_WRITE); |
| if (status < 0) { |
| mlog_errno(status); |
| ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| return status; |
| } |
| lock_buffer(bh); |
| modify(bh, private); |
| unlock_buffer(bh); |
| ocfs2_journal_dirty(handle, bh); |
| |
| status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| if (status < 0) { |
| mlog_errno(status); |
| return status; |
| } |
| return 0; |
| } |
| |
| /* |
| * Read quota block from a given logical offset. |
| * |
| * This function acquires ip_alloc_sem and thus it must not be called with a |
| * transaction started. |
| */ |
| static int ocfs2_read_quota_block(struct inode *inode, u64 v_block, |
| struct buffer_head **bh) |
| { |
| int rc = 0; |
| struct buffer_head *tmp = *bh; |
| |
| if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) |
| return ocfs2_error(inode->i_sb, |
| "Quota file %llu is probably corrupted! Requested to read block %Lu but file has size only %Lu\n", |
| (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| (unsigned long long)v_block, |
| (unsigned long long)i_size_read(inode)); |
| |
| rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, |
| ocfs2_validate_quota_block); |
| if (rc) |
| mlog_errno(rc); |
| |
| /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ |
| if (!rc && !*bh) |
| *bh = tmp; |
| |
| return rc; |
| } |
| |
| /* Check whether we understand format of quota files */ |
| static int ocfs2_local_check_quota_file(struct super_block *sb, int type) |
| { |
| unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; |
| unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; |
| unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; |
| unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; |
| unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, |
| GROUP_QUOTA_SYSTEM_INODE }; |
| struct buffer_head *bh = NULL; |
| struct inode *linode = sb_dqopt(sb)->files[type]; |
| struct inode *ginode = NULL; |
| struct ocfs2_disk_dqheader *dqhead; |
| int status, ret = 0; |
| |
| /* First check whether we understand local quota file */ |
| status = ocfs2_read_quota_block(linode, 0, &bh); |
| if (status) { |
| mlog_errno(status); |
| mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", |
| type); |
| goto out_err; |
| } |
| dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); |
| if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { |
| mlog(ML_ERROR, "quota file magic does not match (%u != %u)," |
| " type=%d\n", le32_to_cpu(dqhead->dqh_magic), |
| lmagics[type], type); |
| goto out_err; |
| } |
| if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { |
| mlog(ML_ERROR, "quota file version does not match (%u != %u)," |
| " type=%d\n", le32_to_cpu(dqhead->dqh_version), |
| lversions[type], type); |
| goto out_err; |
| } |
| brelse(bh); |
| bh = NULL; |
| |
| /* Next check whether we understand global quota file */ |
| ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], |
| OCFS2_INVALID_SLOT); |
| if (!ginode) { |
| mlog(ML_ERROR, "cannot get global quota file inode " |
| "(type=%d)\n", type); |
| goto out_err; |
| } |
| /* Since the header is read only, we don't care about locking */ |
| status = ocfs2_read_quota_block(ginode, 0, &bh); |
| if (status) { |
| mlog_errno(status); |
| mlog(ML_ERROR, "failed to read global quota file header " |
| "(type=%d)\n", type); |
| goto out_err; |
| } |
| dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); |
| if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { |
| mlog(ML_ERROR, "global quota file magic does not match " |
| "(%u != %u), type=%d\n", |
| le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); |
| goto out_err; |
| } |
| if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { |
| mlog(ML_ERROR, "global quota file version does not match " |
| "(%u != %u), type=%d\n", |
| le32_to_cpu(dqhead->dqh_version), gversions[type], |
| type); |
| goto out_err; |
| } |
| |
| ret = 1; |
| out_err: |
| brelse(bh); |
| iput(ginode); |
| return ret; |
| } |
| |
| /* Release given list of quota file chunks */ |
| static void ocfs2_release_local_quota_bitmaps(struct list_head *head) |
| { |
| struct ocfs2_quota_chunk *pos, *next; |
| |
| list_for_each_entry_safe(pos, next, head, qc_chunk) { |
| list_del(&pos->qc_chunk); |
| brelse(pos->qc_headerbh); |
| kmem_cache_free(ocfs2_qf_chunk_cachep, pos); |
| } |
| } |
| |
| /* Load quota bitmaps into memory */ |
| static int ocfs2_load_local_quota_bitmaps(struct inode *inode, |
| struct ocfs2_local_disk_dqinfo *ldinfo, |
| struct list_head *head) |
| { |
| struct ocfs2_quota_chunk *newchunk; |
| int i, status; |
| |
| INIT_LIST_HEAD(head); |
| for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { |
| newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); |
| if (!newchunk) { |
| ocfs2_release_local_quota_bitmaps(head); |
| return -ENOMEM; |
| } |
| newchunk->qc_num = i; |
| newchunk->qc_headerbh = NULL; |
| status = ocfs2_read_quota_block(inode, |
| ol_quota_chunk_block(inode->i_sb, i), |
| &newchunk->qc_headerbh); |
| if (status) { |
| mlog_errno(status); |
| kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); |
| ocfs2_release_local_quota_bitmaps(head); |
| return status; |
| } |
| list_add_tail(&newchunk->qc_chunk, head); |
| } |
| return 0; |
| } |
| |
| static void olq_update_info(struct buffer_head *bh, void *private) |
| { |
| struct mem_dqinfo *info = private; |
| struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| struct ocfs2_local_disk_dqinfo *ldinfo; |
| |
| ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
| OCFS2_LOCAL_INFO_OFF); |
| spin_lock(&dq_data_lock); |
| ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); |
| ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); |
| ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); |
| spin_unlock(&dq_data_lock); |
| } |
| |
| static int ocfs2_add_recovery_chunk(struct super_block *sb, |
| struct ocfs2_local_disk_chunk *dchunk, |
| int chunk, |
| struct list_head *head) |
| { |
| struct ocfs2_recovery_chunk *rc; |
| |
| rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); |
| if (!rc) |
| return -ENOMEM; |
| rc->rc_chunk = chunk; |
| rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); |
| if (!rc->rc_bitmap) { |
| kfree(rc); |
| return -ENOMEM; |
| } |
| memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, |
| (ol_chunk_entries(sb) + 7) >> 3); |
| list_add_tail(&rc->rc_list, head); |
| return 0; |
| } |
| |
| static void free_recovery_list(struct list_head *head) |
| { |
| struct ocfs2_recovery_chunk *next; |
| struct ocfs2_recovery_chunk *rchunk; |
| |
| list_for_each_entry_safe(rchunk, next, head, rc_list) { |
| list_del(&rchunk->rc_list); |
| kfree(rchunk->rc_bitmap); |
| kfree(rchunk); |
| } |
| } |
| |
| void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) |
| { |
| int type; |
| |
| for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
| free_recovery_list(&(rec->r_list[type])); |
| kfree(rec); |
| } |
| |
| /* Load entries in our quota file we have to recover*/ |
| static int ocfs2_recovery_load_quota(struct inode *lqinode, |
| struct ocfs2_local_disk_dqinfo *ldinfo, |
| int type, |
| struct list_head *head) |
| { |
| struct super_block *sb = lqinode->i_sb; |
| struct buffer_head *hbh; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); |
| int status = 0; |
| |
| for (i = 0; i < chunks; i++) { |
| hbh = NULL; |
| status = ocfs2_read_quota_block(lqinode, |
| ol_quota_chunk_block(sb, i), |
| &hbh); |
| if (status) { |
| mlog_errno(status); |
| break; |
| } |
| dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; |
| if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) |
| status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); |
| brelse(hbh); |
| if (status < 0) |
| break; |
| } |
| if (status < 0) |
| free_recovery_list(head); |
| return status; |
| } |
| |
| static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) |
| { |
| int type; |
| struct ocfs2_quota_recovery *rec; |
| |
| rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); |
| if (!rec) |
| return NULL; |
| for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
| INIT_LIST_HEAD(&(rec->r_list[type])); |
| return rec; |
| } |
| |
| /* Load information we need for quota recovery into memory */ |
| struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( |
| struct ocfs2_super *osb, |
| int slot_num) |
| { |
| unsigned int feature[OCFS2_MAXQUOTAS] = { |
| OCFS2_FEATURE_RO_COMPAT_USRQUOTA, |
| OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; |
| unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
| LOCAL_GROUP_QUOTA_SYSTEM_INODE }; |
| struct super_block *sb = osb->sb; |
| struct ocfs2_local_disk_dqinfo *ldinfo; |
| struct inode *lqinode; |
| struct buffer_head *bh; |
| int type; |
| int status = 0; |
| struct ocfs2_quota_recovery *rec; |
| |
| printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for " |
| "slot %u\n", osb->dev_str, slot_num); |
| |
| rec = ocfs2_alloc_quota_recovery(); |
| if (!rec) |
| return ERR_PTR(-ENOMEM); |
| /* First init... */ |
| |
| for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
| if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
| continue; |
| /* At this point, journal of the slot is already replayed so |
| * we can trust metadata and data of the quota file */ |
| lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
| if (!lqinode) { |
| status = -ENOENT; |
| goto out; |
| } |
| status = ocfs2_inode_lock_full(lqinode, NULL, 1, |
| OCFS2_META_LOCK_RECOVERY); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_put; |
| } |
| /* Now read local header */ |
| bh = NULL; |
| status = ocfs2_read_quota_block(lqinode, 0, &bh); |
| if (status) { |
| mlog_errno(status); |
| mlog(ML_ERROR, "failed to read quota file info header " |
| "(slot=%d type=%d)\n", slot_num, type); |
| goto out_lock; |
| } |
| ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
| OCFS2_LOCAL_INFO_OFF); |
| status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
| &rec->r_list[type]); |
| brelse(bh); |
| out_lock: |
| ocfs2_inode_unlock(lqinode, 1); |
| out_put: |
| iput(lqinode); |
| if (status < 0) |
| break; |
| } |
| out: |
| if (status < 0) { |
| ocfs2_free_quota_recovery(rec); |
| rec = ERR_PTR(status); |
| } |
| return rec; |
| } |
| |
| /* Sync changes in local quota file into global quota file and |
| * reinitialize local quota file. |
| * The function expects local quota file to be already locked and |
| * s_umount locked in shared mode. */ |
| static int ocfs2_recover_local_quota_file(struct inode *lqinode, |
| int type, |
| struct ocfs2_quota_recovery *rec) |
| { |
| struct super_block *sb = lqinode->i_sb; |
| struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| struct ocfs2_local_disk_chunk *dchunk; |
| struct ocfs2_local_disk_dqblk *dqblk; |
| struct dquot *dquot; |
| handle_t *handle; |
| struct buffer_head *hbh = NULL, *qbh = NULL; |
| int status = 0; |
| int bit, chunk; |
| struct ocfs2_recovery_chunk *rchunk, *next; |
| qsize_t spacechange, inodechange; |
| |
| trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type); |
| |
| list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
| chunk = rchunk->rc_chunk; |
| hbh = NULL; |
| status = ocfs2_read_quota_block(lqinode, |
| ol_quota_chunk_block(sb, chunk), |
| &hbh); |
| if (status) { |
| mlog_errno(status); |
| break; |
| } |
| dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; |
| for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { |
| qbh = NULL; |
| status = ocfs2_read_quota_block(lqinode, |
| ol_dqblk_block(sb, chunk, bit), |
| &qbh); |
| if (status) { |
| mlog_errno(status); |
| break; |
| } |
| dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + |
| ol_dqblk_block_off(sb, chunk, bit)); |
| dquot = dqget(sb, |
| make_kqid(&init_user_ns, type, |
| le64_to_cpu(dqblk->dqb_id))); |
| if (IS_ERR(dquot)) { |
| status = PTR_ERR(dquot); |
| mlog(ML_ERROR, "Failed to get quota structure " |
| "for id %u, type %d. Cannot finish quota " |
| "file recovery.\n", |
| (unsigned)le64_to_cpu(dqblk->dqb_id), |
| type); |
| goto out_put_bh; |
| } |
| status = ocfs2_lock_global_qf(oinfo, 1); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_put_dquot; |
| } |
| |
| handle = ocfs2_start_trans(OCFS2_SB(sb), |
| OCFS2_QSYNC_CREDITS); |
| if (IS_ERR(handle)) { |
| status = PTR_ERR(handle); |
| mlog_errno(status); |
| goto out_drop_lock; |
| } |
| down_write(&sb_dqopt(sb)->dqio_sem); |
| spin_lock(&dquot->dq_dqb_lock); |
| /* Add usage from quota entry into quota changes |
| * of our node. Auxiliary variables are important |
| * due to signedness */ |
| spacechange = le64_to_cpu(dqblk->dqb_spacemod); |
| inodechange = le64_to_cpu(dqblk->dqb_inodemod); |
| dquot->dq_dqb.dqb_curspace += spacechange; |
| dquot->dq_dqb.dqb_curinodes += inodechange; |
| spin_unlock(&dquot->dq_dqb_lock); |
| /* We want to drop reference held by the crashed |
| * node. Since we have our own reference we know |
| * global structure actually won't be freed. */ |
| status = ocfs2_global_release_dquot(dquot); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_commit; |
| } |
| /* Release local quota file entry */ |
| status = ocfs2_journal_access_dq(handle, |
| INODE_CACHE(lqinode), |
| qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_commit; |
| } |
| lock_buffer(qbh); |
| WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
| ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); |
| le32_add_cpu(&dchunk->dqc_free, 1); |
| unlock_buffer(qbh); |
| ocfs2_journal_dirty(handle, qbh); |
| out_commit: |
| up_write(&sb_dqopt(sb)->dqio_sem); |
| ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| out_drop_lock: |
| ocfs2_unlock_global_qf(oinfo, 1); |
| out_put_dquot: |
| dqput(dquot); |
| out_put_bh: |
| brelse(qbh); |
| if (status < 0) |
| break; |
| } |
| brelse(hbh); |
| list_del(&rchunk->rc_list); |
| kfree(rchunk->rc_bitmap); |
| kfree(rchunk); |
| if (status < 0) |
| break; |
| } |
| if (status < 0) |
| free_recovery_list(&(rec->r_list[type])); |
| if (status) |
| mlog_errno(status); |
| return status; |
| } |
| |
| /* Recover local quota files for given node different from us */ |
| int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, |
| struct ocfs2_quota_recovery *rec, |
| int slot_num) |
| { |
| unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
| LOCAL_GROUP_QUOTA_SYSTEM_INODE }; |
| struct super_block *sb = osb->sb; |
| struct ocfs2_local_disk_dqinfo *ldinfo; |
| struct buffer_head *bh; |
| handle_t *handle; |
| int type; |
| int status = 0; |
| struct inode *lqinode; |
| unsigned int flags; |
| |
| printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
| "slot %u\n", osb->dev_str, slot_num); |
| |
| down_read(&sb->s_umount); |
| for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
| if (list_empty(&(rec->r_list[type]))) |
| continue; |
| trace_ocfs2_finish_quota_recovery(slot_num); |
| lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
| if (!lqinode) { |
| status = -ENOENT; |
| goto out; |
| } |
| status = ocfs2_inode_lock_full(lqinode, NULL, 1, |
| OCFS2_META_LOCK_NOQUEUE); |
| /* Someone else is holding the lock? Then he must be |
| * doing the recovery. Just skip the file... */ |
| if (status == -EAGAIN) { |
| printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
| "device (%s) for slot %d because quota file is " |
| "locked.\n", osb->dev_str, slot_num); |
| status = 0; |
| goto out_put; |
| } else if (status < 0) { |
| mlog_errno(status); |
| goto out_put; |
| } |
| /* Now read local header */ |
| bh = NULL; |
| status = ocfs2_read_quota_block(lqinode, 0, &bh); |
| if (status) { |
| mlog_errno(status); |
| mlog(ML_ERROR, "failed to read quota file info header " |
| "(slot=%d type=%d)\n", slot_num, type); |
| goto out_lock; |
| } |
| ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
| OCFS2_LOCAL_INFO_OFF); |
| /* Is recovery still needed? */ |
| flags = le32_to_cpu(ldinfo->dqi_flags); |
| if (!(flags & OLQF_CLEAN)) |
| status = ocfs2_recover_local_quota_file(lqinode, |
| type, |
| rec); |
| /* We don't want to mark file as clean when it is actually |
| * active */ |
| if (slot_num == osb->slot_num) |
| goto out_bh; |
| /* Mark quota file as clean if we are recovering quota file of |
| * some other node. */ |
| handle = ocfs2_start_trans(osb, |
| OCFS2_LOCAL_QINFO_WRITE_CREDITS); |
| if (IS_ERR(handle)) { |
| status = PTR_ERR(handle); |
| mlog_errno(status); |
| goto out_bh; |
| } |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
| bh, |
| OCFS2_JOURNAL_ACCESS_WRITE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| lock_buffer(bh); |
| ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); |
| unlock_buffer(bh); |
| ocfs2_journal_dirty(handle, bh); |
| out_trans: |
| ocfs2_commit_trans(osb, handle); |
| out_bh: |
| brelse(bh); |
| out_lock: |
| ocfs2_inode_unlock(lqinode, 1); |
| out_put: |
| iput(lqinode); |
| if (status < 0) |
| break; |
| } |
| out: |
| up_read(&sb->s_umount); |
| kfree(rec); |
| return status; |
| } |
| |
| /* Read information header from quota file */ |
| static int ocfs2_local_read_info(struct super_block *sb, int type) |
| { |
| struct ocfs2_local_disk_dqinfo *ldinfo; |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct ocfs2_mem_dqinfo *oinfo; |
| struct inode *lqinode = sb_dqopt(sb)->files[type]; |
| int status; |
| struct buffer_head *bh = NULL; |
| struct ocfs2_quota_recovery *rec; |
| int locked = 0; |
| |
| info->dqi_max_spc_limit = 0x7fffffffffffffffLL; |
| info->dqi_max_ino_limit = 0x7fffffffffffffffLL; |
| oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); |
| if (!oinfo) { |
| mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" |
| " info."); |
| goto out_err; |
| } |
| info->dqi_priv = oinfo; |
| oinfo->dqi_type = type; |
| INIT_LIST_HEAD(&oinfo->dqi_chunk); |
| oinfo->dqi_rec = NULL; |
| oinfo->dqi_lqi_bh = NULL; |
| oinfo->dqi_libh = NULL; |
| |
| status = ocfs2_global_read_info(sb, type); |
| if (status < 0) |
| goto out_err; |
| |
| status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_err; |
| } |
| locked = 1; |
| |
| /* Now read local header */ |
| status = ocfs2_read_quota_block(lqinode, 0, &bh); |
| if (status) { |
| mlog_errno(status); |
| mlog(ML_ERROR, "failed to read quota file info header " |
| "(type=%d)\n", type); |
| goto out_err; |
| } |
| ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
| OCFS2_LOCAL_INFO_OFF); |
| oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
| oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
| oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); |
| oinfo->dqi_libh = bh; |
| |
| /* We crashed when using local quota file? */ |
| if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
| rec = OCFS2_SB(sb)->quota_rec; |
| if (!rec) { |
| rec = ocfs2_alloc_quota_recovery(); |
| if (!rec) { |
| status = -ENOMEM; |
| mlog_errno(status); |
| goto out_err; |
| } |
| OCFS2_SB(sb)->quota_rec = rec; |
| } |
| |
| status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
| &rec->r_list[type]); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_err; |
| } |
| } |
| |
| status = ocfs2_load_local_quota_bitmaps(lqinode, |
| ldinfo, |
| &oinfo->dqi_chunk); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_err; |
| } |
| |
| /* Now mark quota file as used */ |
| oinfo->dqi_flags &= ~OLQF_CLEAN; |
| status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_err; |
| } |
| |
| return 0; |
| out_err: |
| if (oinfo) { |
| iput(oinfo->dqi_gqinode); |
| ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); |
| ocfs2_lock_res_free(&oinfo->dqi_gqlock); |
| brelse(oinfo->dqi_lqi_bh); |
| if (locked) |
| ocfs2_inode_unlock(lqinode, 1); |
| ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); |
| kfree(oinfo); |
| } |
| brelse(bh); |
| return -1; |
| } |
| |
| /* Write local info to quota file */ |
| static int ocfs2_local_write_info(struct super_block *sb, int type) |
| { |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) |
| ->dqi_libh; |
| int status; |
| |
| status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, |
| info); |
| if (status < 0) { |
| mlog_errno(status); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /* Release info from memory */ |
| static int ocfs2_local_free_info(struct super_block *sb, int type) |
| { |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| struct ocfs2_quota_chunk *chunk; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int mark_clean = 1, len; |
| int status; |
| |
| iput(oinfo->dqi_gqinode); |
| ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); |
| ocfs2_lock_res_free(&oinfo->dqi_gqlock); |
| list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { |
| dchunk = (struct ocfs2_local_disk_chunk *) |
| (chunk->qc_headerbh->b_data); |
| if (chunk->qc_num < oinfo->dqi_chunks - 1) { |
| len = ol_chunk_entries(sb); |
| } else { |
| len = (oinfo->dqi_blocks - |
| ol_quota_chunk_block(sb, chunk->qc_num) - 1) |
| * ol_quota_entries_per_block(sb); |
| } |
| /* Not all entries free? Bug! */ |
| if (le32_to_cpu(dchunk->dqc_free) != len) { |
| mlog(ML_ERROR, "releasing quota file with used " |
| "entries (type=%d)\n", type); |
| mark_clean = 0; |
| } |
| } |
| ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); |
| |
| /* |
| * s_umount held in exclusive mode protects us against racing with |
| * recovery thread... |
| */ |
| if (oinfo->dqi_rec) { |
| ocfs2_free_quota_recovery(oinfo->dqi_rec); |
| mark_clean = 0; |
| } |
| |
| if (!mark_clean) |
| goto out; |
| |
| /* Mark local file as clean */ |
| oinfo->dqi_flags |= OLQF_CLEAN; |
| status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
| oinfo->dqi_libh, |
| olq_update_info, |
| info); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| |
| out: |
| ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); |
| brelse(oinfo->dqi_libh); |
| brelse(oinfo->dqi_lqi_bh); |
| kfree(oinfo); |
| return 0; |
| } |
| |
| static void olq_set_dquot(struct buffer_head *bh, void *private) |
| { |
| struct ocfs2_dquot *od = private; |
| struct ocfs2_local_disk_dqblk *dqblk; |
| struct super_block *sb = od->dq_dquot.dq_sb; |
| |
| dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data |
| + ol_dqblk_block_offset(sb, od->dq_local_off)); |
| |
| dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
| od->dq_dquot.dq_id)); |
| spin_lock(&od->dq_dquot.dq_dqb_lock); |
| dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - |
| od->dq_origspace); |
| dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - |
| od->dq_originodes); |
| spin_unlock(&od->dq_dquot.dq_dqb_lock); |
| trace_olq_set_dquot( |
| (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), |
| (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), |
| from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
| } |
| |
| /* Write dquot to local quota file */ |
| int ocfs2_local_write_dquot(struct dquot *dquot) |
| { |
| struct super_block *sb = dquot->dq_sb; |
| struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
| struct buffer_head *bh; |
| struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
| int status; |
| |
| status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
| &bh); |
| if (status) { |
| mlog_errno(status); |
| goto out; |
| } |
| status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| out: |
| brelse(bh); |
| return status; |
| } |
| |
| /* Find free entry in local quota file */ |
| static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, |
| int type, |
| int *offset) |
| { |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| struct ocfs2_quota_chunk *chunk; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int found = 0, len; |
| |
| list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { |
| dchunk = (struct ocfs2_local_disk_chunk *) |
| chunk->qc_headerbh->b_data; |
| if (le32_to_cpu(dchunk->dqc_free) > 0) { |
| found = 1; |
| break; |
| } |
| } |
| if (!found) |
| return NULL; |
| |
| if (chunk->qc_num < oinfo->dqi_chunks - 1) { |
| len = ol_chunk_entries(sb); |
| } else { |
| len = (oinfo->dqi_blocks - |
| ol_quota_chunk_block(sb, chunk->qc_num) - 1) |
| * ol_quota_entries_per_block(sb); |
| } |
| |
| found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
| /* We failed? */ |
| if (found == len) { |
| mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" |
| " entries free (type=%d)\n", chunk->qc_num, |
| le32_to_cpu(dchunk->dqc_free), type); |
| return ERR_PTR(-EIO); |
| } |
| *offset = found; |
| return chunk; |
| } |
| |
| /* Add new chunk to the local quota file */ |
| static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( |
| struct super_block *sb, |
| int type, |
| int *offset) |
| { |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| struct inode *lqinode = sb_dqopt(sb)->files[type]; |
| struct ocfs2_quota_chunk *chunk = NULL; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int status; |
| handle_t *handle; |
| struct buffer_head *bh = NULL, *dbh = NULL; |
| u64 p_blkno; |
| |
| /* We are protected by dqio_sem so no locking needed */ |
| status = ocfs2_extend_no_holes(lqinode, NULL, |
| i_size_read(lqinode) + 2 * sb->s_blocksize, |
| i_size_read(lqinode)); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, |
| i_size_read(lqinode) + 2 * sb->s_blocksize); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| |
| chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); |
| if (!chunk) { |
| status = -ENOMEM; |
| mlog_errno(status); |
| goto out; |
| } |
| /* Local quota info and two new blocks we initialize */ |
| handle = ocfs2_start_trans(OCFS2_SB(sb), |
| OCFS2_LOCAL_QINFO_WRITE_CREDITS + |
| 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
| if (IS_ERR(handle)) { |
| status = PTR_ERR(handle); |
| mlog_errno(status); |
| goto out; |
| } |
| |
| /* Initialize chunk header */ |
| status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
| &p_blkno, NULL, NULL); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| bh = sb_getblk(sb, p_blkno); |
| if (!bh) { |
| status = -ENOMEM; |
| mlog_errno(status); |
| goto out_trans; |
| } |
| dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; |
| ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
| OCFS2_JOURNAL_ACCESS_CREATE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| lock_buffer(bh); |
| dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
| memset(dchunk->dqc_bitmap, 0, |
| sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - |
| OCFS2_QBLK_RESERVED_SPACE); |
| unlock_buffer(bh); |
| ocfs2_journal_dirty(handle, bh); |
| |
| /* Initialize new block with structures */ |
| status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
| &p_blkno, NULL, NULL); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| dbh = sb_getblk(sb, p_blkno); |
| if (!dbh) { |
| status = -ENOMEM; |
| mlog_errno(status); |
| goto out_trans; |
| } |
| ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
| OCFS2_JOURNAL_ACCESS_CREATE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| lock_buffer(dbh); |
| memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); |
| unlock_buffer(dbh); |
| ocfs2_journal_dirty(handle, dbh); |
| |
| /* Update local quotafile info */ |
| oinfo->dqi_blocks += 2; |
| oinfo->dqi_chunks++; |
| status = ocfs2_local_write_info(sb, type); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| |
| list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); |
| chunk->qc_num = list_entry(chunk->qc_chunk.prev, |
| struct ocfs2_quota_chunk, |
| qc_chunk)->qc_num + 1; |
| chunk->qc_headerbh = bh; |
| *offset = 0; |
| return chunk; |
| out_trans: |
| ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| out: |
| brelse(bh); |
| brelse(dbh); |
| kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
| return ERR_PTR(status); |
| } |
| |
| /* Find free entry in local quota file */ |
| static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( |
| struct super_block *sb, |
| int type, |
| int *offset) |
| { |
| struct mem_dqinfo *info = sb_dqinfo(sb, type); |
| struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
| struct ocfs2_quota_chunk *chunk; |
| struct inode *lqinode = sb_dqopt(sb)->files[type]; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int epb = ol_quota_entries_per_block(sb); |
| unsigned int chunk_blocks; |
| struct buffer_head *bh; |
| u64 p_blkno; |
| int status; |
| handle_t *handle; |
| |
| if (list_empty(&oinfo->dqi_chunk)) |
| return ocfs2_local_quota_add_chunk(sb, type, offset); |
| /* Is the last chunk full? */ |
| chunk = list_entry(oinfo->dqi_chunk.prev, |
| struct ocfs2_quota_chunk, qc_chunk); |
| chunk_blocks = oinfo->dqi_blocks - |
| ol_quota_chunk_block(sb, chunk->qc_num) - 1; |
| if (ol_chunk_blocks(sb) == chunk_blocks) |
| return ocfs2_local_quota_add_chunk(sb, type, offset); |
| |
| /* We are protected by dqio_sem so no locking needed */ |
| status = ocfs2_extend_no_holes(lqinode, NULL, |
| i_size_read(lqinode) + sb->s_blocksize, |
| i_size_read(lqinode)); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, |
| i_size_read(lqinode) + sb->s_blocksize); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| |
| /* Get buffer from the just added block */ |
| status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
| &p_blkno, NULL, NULL); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| bh = sb_getblk(sb, p_blkno); |
| if (!bh) { |
| status = -ENOMEM; |
| mlog_errno(status); |
| goto out; |
| } |
| ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
| |
| /* Local quota info, chunk header and the new block we initialize */ |
| handle = ocfs2_start_trans(OCFS2_SB(sb), |
| OCFS2_LOCAL_QINFO_WRITE_CREDITS + |
| 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
| if (IS_ERR(handle)) { |
| status = PTR_ERR(handle); |
| mlog_errno(status); |
| goto out; |
| } |
| /* Zero created block */ |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
| OCFS2_JOURNAL_ACCESS_CREATE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| lock_buffer(bh); |
| memset(bh->b_data, 0, sb->s_blocksize); |
| unlock_buffer(bh); |
| ocfs2_journal_dirty(handle, bh); |
| |
| /* Update chunk header */ |
| status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
| chunk->qc_headerbh, |
| OCFS2_JOURNAL_ACCESS_WRITE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| |
| dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; |
| lock_buffer(chunk->qc_headerbh); |
| le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); |
| unlock_buffer(chunk->qc_headerbh); |
| ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
| |
| /* Update file header */ |
| oinfo->dqi_blocks++; |
| status = ocfs2_local_write_info(sb, type); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out_trans; |
| } |
| |
| status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| *offset = chunk_blocks * epb; |
| return chunk; |
| out_trans: |
| ocfs2_commit_trans(OCFS2_SB(sb), handle); |
| out: |
| return ERR_PTR(status); |
| } |
| |
| static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
| { |
| int *offset = private; |
| struct ocfs2_local_disk_chunk *dchunk; |
| |
| dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; |
| ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
| le32_add_cpu(&dchunk->dqc_free, -1); |
| } |
| |
| /* Create dquot in the local file for given id */ |
| int ocfs2_create_local_dquot(struct dquot *dquot) |
| { |
| struct super_block *sb = dquot->dq_sb; |
| int type = dquot->dq_id.type; |
| struct inode *lqinode = sb_dqopt(sb)->files[type]; |
| struct ocfs2_quota_chunk *chunk; |
| struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
| int offset; |
| int status; |
| u64 pcount; |
| |
| down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
| chunk = ocfs2_find_free_entry(sb, type, &offset); |
| if (!chunk) { |
| chunk = ocfs2_extend_local_quota_file(sb, type, &offset); |
| if (IS_ERR(chunk)) { |
| status = PTR_ERR(chunk); |
| goto out; |
| } |
| } else if (IS_ERR(chunk)) { |
| status = PTR_ERR(chunk); |
| goto out; |
| } |
| od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); |
| od->dq_chunk = chunk; |
| status = ocfs2_extent_map_get_blocks(lqinode, |
| ol_dqblk_block(sb, chunk->qc_num, offset), |
| &od->dq_local_phys_blk, |
| &pcount, |
| NULL); |
| |
| /* Initialize dquot structure on disk */ |
| status = ocfs2_local_write_dquot(dquot); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| |
| /* Mark structure as allocated */ |
| status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, |
| &offset); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| out: |
| up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
| return status; |
| } |
| |
| /* |
| * Release dquot structure from local quota file. ocfs2_release_dquot() has |
| * already started a transaction and written all changes to global quota file |
| */ |
| int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) |
| { |
| int status; |
| int type = dquot->dq_id.type; |
| struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
| struct super_block *sb = dquot->dq_sb; |
| struct ocfs2_local_disk_chunk *dchunk; |
| int offset; |
| |
| status = ocfs2_journal_access_dq(handle, |
| INODE_CACHE(sb_dqopt(sb)->files[type]), |
| od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
| if (status < 0) { |
| mlog_errno(status); |
| goto out; |
| } |
| offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, |
| od->dq_local_off); |
| dchunk = (struct ocfs2_local_disk_chunk *) |
| (od->dq_chunk->qc_headerbh->b_data); |
| /* Mark structure as freed */ |
| lock_buffer(od->dq_chunk->qc_headerbh); |
| ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
| le32_add_cpu(&dchunk->dqc_free, 1); |
| unlock_buffer(od->dq_chunk->qc_headerbh); |
| ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
| |
| out: |
| return status; |
| } |
| |
| static const struct quota_format_ops ocfs2_format_ops = { |
| .check_quota_file = ocfs2_local_check_quota_file, |
| .read_file_info = ocfs2_local_read_info, |
| .write_file_info = ocfs2_global_write_info, |
| .free_file_info = ocfs2_local_free_info, |
| }; |
| |
| struct quota_format_type ocfs2_quota_format = { |
| .qf_fmt_id = QFMT_OCFS2, |
| .qf_ops = &ocfs2_format_ops, |
| .qf_owner = THIS_MODULE |
| }; |