132 void __quota_error(struct super_block *sb, const char *func,  in __quota_error()  argument
145 		       sb->s_id, func, &vaf);  in __quota_error()
253 hashfn(const struct super_block *sb, struct kqid qid)  in hashfn()  argument
259 	tmp = (((unsigned long)sb>>L1_CACHE_SHIFT) ^ id) * (MAXQUOTAS - type);  in hashfn()
278 static struct dquot *find_dquot(unsigned int hashent, struct super_block *sb,  in find_dquot()  argument
286 		if (dquot->dq_sb == sb && qid_eq(dquot->dq_id, qid))  in find_dquot()
393 void mark_info_dirty(struct super_block *sb, int type)  in mark_info_dirty()  argument
395 	set_bit(DQF_INFO_DIRTY_B, &sb_dqopt(sb)->info[type].dqi_flags);  in mark_info_dirty()
513 static void invalidate_dquots(struct super_block *sb, int type)  in invalidate_dquots()  argument
520 		if (dquot->dq_sb != sb)  in invalidate_dquots()
561 int dquot_scan_active(struct super_block *sb,  in dquot_scan_active()  argument
568 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_scan_active()
573 		if (dquot->dq_sb != sb)  in dquot_scan_active()
599 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_scan_active()
605 int dquot_writeback_dquots(struct super_block *sb, int type)  in dquot_writeback_dquots()  argument
609 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_writeback_dquots()
617 		if (!sb_has_quota_active(sb, cnt))  in dquot_writeback_dquots()
635 			err = sb->dq_op->write_dquot(dquot);  in dquot_writeback_dquots()
645 		if ((cnt == type || type == -1) && sb_has_quota_active(sb, cnt)  in dquot_writeback_dquots()
647 			sb->dq_op->write_info(sb, cnt);  in dquot_writeback_dquots()
656 int dquot_quota_sync(struct super_block *sb, int type)  in dquot_quota_sync()  argument
658 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_quota_sync()
662 	ret = dquot_writeback_dquots(sb, type);  in dquot_quota_sync()
671 	if (sb->s_op->sync_fs)  in dquot_quota_sync()
672 		sb->s_op->sync_fs(sb, 1);  in dquot_quota_sync()
673 	sync_blockdev(sb->s_bdev);  in dquot_quota_sync()
683 		if (!sb_has_quota_active(sb, cnt))  in dquot_quota_sync()
797 struct dquot *dquot_alloc(struct super_block *sb, int type)  in dquot_alloc()  argument
803 static struct dquot *get_empty_dquot(struct super_block *sb, int type)  in get_empty_dquot()  argument
807 	dquot = sb->dq_op->alloc_dquot(sb, type);  in get_empty_dquot()
817 	dquot->dq_sb = sb;  in get_empty_dquot()
832 struct dquot *dqget(struct super_block *sb, struct kqid qid)  in dqget()  argument
834 	unsigned int hashent = hashfn(sb, qid);  in dqget()
837         if (!sb_has_quota_active(sb, qid.type))  in dqget()
842 	if (!sb_has_quota_active(sb, qid.type)) {  in dqget()
850 	dquot = find_dquot(hashent, sb, qid);  in dqget()
854 			empty = get_empty_dquot(sb, qid.type);  in dqget()
883 		err = sb->dq_op->acquire_dquot(dquot);  in dqget()
924 static void add_dquot_ref(struct super_block *sb, int type)  in add_dquot_ref()  argument
931 	spin_lock(&sb->s_inode_list_lock);  in add_dquot_ref()
932 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {  in add_dquot_ref()
942 		spin_unlock(&sb->s_inode_list_lock);  in add_dquot_ref()
960 		spin_lock(&sb->s_inode_list_lock);  in add_dquot_ref()
962 	spin_unlock(&sb->s_inode_list_lock);  in add_dquot_ref()
967 		quota_error(sb, "Writes happened before quota was turned on "  in add_dquot_ref()
1025 static void remove_dquot_ref(struct super_block *sb, int type,  in remove_dquot_ref()  argument
1031 	spin_lock(&sb->s_inode_list_lock);  in remove_dquot_ref()
1032 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {  in remove_dquot_ref()
1047 	spin_unlock(&sb->s_inode_list_lock);  in remove_dquot_ref()
1052 			"inconsistent. Please run quotacheck(8).\n", sb->s_id);  in remove_dquot_ref()
1058 static void drop_dquot_ref(struct super_block *sb, int type)  in drop_dquot_ref()  argument
1062 	if (sb->dq_op) {  in drop_dquot_ref()
1063 		remove_dquot_ref(sb, type, &tofree_head);  in drop_dquot_ref()
1305 	struct super_block *sb = dquot->dq_sb;  in check_bdq()  local
1307 	if (!sb_has_quota_limits_enabled(sb, dquot->dq_id.type) ||  in check_bdq()
1338 			    sb_dqopt(sb)->info[dquot->dq_id.type].dqi_bgrace;  in check_bdq()
1385 	struct super_block *sb = inode->i_sb;  in dquot_active()  local
1389 	return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb);  in dquot_active()
1402 	struct super_block *sb = inode->i_sb;  in __dquot_initialize()  local
1428 		if (!sb_has_quota_active(sb, cnt))  in __dquot_initialize()
1447 		dquot = dqget(sb, qid);  in __dquot_initialize()
1470 		if (!sb_has_quota_active(sb, cnt))  in __dquot_initialize()
1983 	struct super_block *sb = inode->i_sb;  in dquot_transfer()  local
1990 		dquot = dqget(sb, make_kqid_uid(iattr->ia_uid));  in dquot_transfer()
2001 		dquot = dqget(sb, make_kqid_gid(iattr->ia_gid));  in dquot_transfer()
2021 int dquot_commit_info(struct super_block *sb, int type)  in dquot_commit_info()  argument
2024 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_commit_info()
2027 	ret = dqopt->ops[type]->write_file_info(sb, type);  in dquot_commit_info()
2064 int dquot_disable(struct super_block *sb, int type, unsigned int flags)  in dquot_disable()  argument
2067 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_disable()
2085 	if (!sb_any_quota_loaded(sb)) {  in dquot_disable()
2093 		if (!sb_has_quota_loaded(sb, cnt))  in dquot_disable()
2105 			if (!sb_has_quota_loaded(sb, cnt) &&  in dquot_disable()
2106 			    sb_has_quota_suspended(sb, cnt)) {  in dquot_disable()
2118 		if (sb_has_quota_loaded(sb, cnt) && !(flags & DQUOT_SUSPENDED))  in dquot_disable()
2122 		drop_dquot_ref(sb, cnt);  in dquot_disable()
2123 		invalidate_dquots(sb, cnt);  in dquot_disable()
2129 			sb->dq_op->write_info(sb, cnt);  in dquot_disable()
2131 			dqopt->ops[cnt]->free_file_info(sb, cnt);  in dquot_disable()
2135 		if (!sb_has_quota_loaded(sb, cnt))  in dquot_disable()
2150 	if (sb->s_op->sync_fs)  in dquot_disable()
2151 		sb->s_op->sync_fs(sb, 1);  in dquot_disable()
2152 	sync_blockdev(sb->s_bdev);  in dquot_disable()
2163 			if (!sb_has_quota_loaded(sb, cnt)) {  in dquot_disable()
2174 	if (sb->s_bdev)  in dquot_disable()
2175 		invalidate_bdev(sb->s_bdev);  in dquot_disable()
2195 int dquot_quota_off(struct super_block *sb, int type)  in dquot_quota_off()  argument
2197 	return dquot_disable(sb, type,  in dquot_quota_off()
2214 	struct super_block *sb = inode->i_sb;  in vfs_load_quota_inode()  local
2215 	struct quota_info *dqopt = sb_dqopt(sb);  in vfs_load_quota_inode()
2229 	if (!sb->s_op->quota_write || !sb->s_op->quota_read ||  in vfs_load_quota_inode()
2230 	    (type == PRJQUOTA && sb->dq_op->get_projid == NULL)) {  in vfs_load_quota_inode()
2247 		sync_filesystem(sb);  in vfs_load_quota_inode()
2248 		invalidate_bdev(sb->s_bdev);  in vfs_load_quota_inode()
2251 	if (sb_has_quota_loaded(sb, type)) {  in vfs_load_quota_inode()
2277 	if (!fmt->qf_ops->check_quota_file(sb, type))  in vfs_load_quota_inode()
2285 	error = dqopt->ops[type]->read_file_info(sb, type);  in vfs_load_quota_inode()
2297 	add_dquot_ref(sb, type);  in vfs_load_quota_inode()
2322 int dquot_resume(struct super_block *sb, int type)  in dquot_resume()  argument
2324 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_resume()
2334 		if (!sb_has_quota_suspended(sb, cnt)) {  in dquot_resume()
2358 int dquot_quota_on(struct super_block *sb, int type, int format_id,  in dquot_quota_on()  argument
2365 	if (path->dentry->d_sb != sb)  in dquot_quota_on()
2383 	struct super_block *sb = inode->i_sb;  in dquot_enable()  local
2384 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_enable()
2392 	if (sb_has_quota_loaded(sb, type)) {  in dquot_enable()
2395 		if (!sb_has_quota_loaded(sb, type)) {  in dquot_enable()
2400 		    sb_has_quota_usage_enabled(sb, type)) {  in dquot_enable()
2405 		    sb_has_quota_limits_enabled(sb, type)) {  in dquot_enable()
2410 		sb_dqopt(sb)->flags |= dquot_state_flag(flags, type);  in dquot_enable()
2426 int dquot_quota_on_mount(struct super_block *sb, char *qf_name,  in dquot_quota_on_mount()  argument
2432 	mutex_lock(&d_inode(sb->s_root)->i_mutex);  in dquot_quota_on_mount()
2433 	dentry = lookup_one_len(qf_name, sb->s_root, strlen(qf_name));  in dquot_quota_on_mount()
2434 	mutex_unlock(&d_inode(sb->s_root)->i_mutex);  in dquot_quota_on_mount()
2454 static int dquot_quota_enable(struct super_block *sb, unsigned int flags)  in dquot_quota_enable()  argument
2458 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_quota_enable()
2470 		if (!sb_has_quota_usage_enabled(sb, type))  in dquot_quota_enable()
2483 			dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);  in dquot_quota_enable()
2491 static int dquot_quota_disable(struct super_block *sb, unsigned int flags)  in dquot_quota_disable()  argument
2495 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_quota_disable()
2510 		if (!sb_has_quota_limits_enabled(sb, type))  in dquot_quota_disable()
2517 			ret = dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);  in dquot_quota_disable()
2552 int dquot_get_dqblk(struct super_block *sb, struct kqid qid,  in dquot_get_dqblk()  argument
2557 	dquot = dqget(sb, qid);  in dquot_get_dqblk()
2664 int dquot_set_dqblk(struct super_block *sb, struct kqid qid,  in dquot_set_dqblk()  argument
2670 	dquot = dqget(sb, qid);  in dquot_set_dqblk()
2683 int dquot_get_state(struct super_block *sb, struct qc_state *state)  in dquot_get_state()  argument
2687 	struct quota_info *dqopt = sb_dqopt(sb);  in dquot_get_state()
2690 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_get_state()
2693 		if (!sb_has_quota_active(sb, type))  in dquot_get_state()
2696 		mi = sb_dqopt(sb)->info + type;  in dquot_get_state()
2703 		if (sb_has_quota_limits_enabled(sb, type))  in dquot_get_state()
2712 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_get_state()
2718 int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii)  in dquot_set_dqinfo()  argument
2726 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_set_dqinfo()
2727 	if (!sb_has_quota_active(sb, type)) {  in dquot_set_dqinfo()
2731 	mi = sb_dqopt(sb)->info + type;  in dquot_set_dqinfo()
2751 	mark_info_dirty(sb, type);  in dquot_set_dqinfo()
2753 	sb->dq_op->write_info(sb, type);  in dquot_set_dqinfo()
2755 	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);  in dquot_set_dqinfo()