1 // SPDX-License-Identifier: GPL-2.0
18 	return sprintf(buf, "%llu\n", iar->sector);  in blk_ia_range_sector_show()
25 	return sprintf(buf, "%llu\n", iar->nr_sectors);  in blk_ia_range_nr_sectors_show()
58 	return entry->show(iar, buf);  in blk_ia_range_sysfs_show()
66  * Independent access range entries are not freed individually, but alltogether
69  * struct blk_independent_access_ranges, the array of independent access range
71  * So we do not need to do anything here, but still need this no-op release
85  * This will be executed only after all independent access range entries are
102  * disk_register_independent_access_ranges - register with sysfs a set of
103  *		independent access ranges
106  * Register with sysfs a set of independent access ranges for @disk.
110 	struct blk_independent_access_ranges *iars = disk->ia_ranges;  in disk_register_independent_access_ranges()
111 	struct request_queue *q = disk->queue;  in disk_register_independent_access_ranges()
114 	lockdep_assert_held(&q->sysfs_lock);  in disk_register_independent_access_ranges()
123 	WARN_ON(iars->sysfs_registered);  in disk_register_independent_access_ranges()
124 	ret = kobject_init_and_add(&iars->kobj, &blk_ia_ranges_ktype,  in disk_register_independent_access_ranges()
125 				   &disk->queue_kobj, "%s",  in disk_register_independent_access_ranges()
128 		disk->ia_ranges = NULL;  in disk_register_independent_access_ranges()
129 		kobject_put(&iars->kobj);  in disk_register_independent_access_ranges()
133 	for (i = 0; i < iars->nr_ia_ranges; i++) {  in disk_register_independent_access_ranges()
134 		ret = kobject_init_and_add(&iars->ia_range[i].kobj,  in disk_register_independent_access_ranges()
135 					   &blk_ia_range_ktype, &iars->kobj,  in disk_register_independent_access_ranges()
138 			while (--i >= 0)  in disk_register_independent_access_ranges()
139 				kobject_del(&iars->ia_range[i].kobj);  in disk_register_independent_access_ranges()
140 			kobject_del(&iars->kobj);  in disk_register_independent_access_ranges()
141 			kobject_put(&iars->kobj);  in disk_register_independent_access_ranges()
146 	iars->sysfs_registered = true;  in disk_register_independent_access_ranges()
153 	struct request_queue *q = disk->queue;  in disk_unregister_independent_access_ranges()
154 	struct blk_independent_access_ranges *iars = disk->ia_ranges;  in disk_unregister_independent_access_ranges()
157 	lockdep_assert_held(&q->sysfs_lock);  in disk_unregister_independent_access_ranges()
162 	if (iars->sysfs_registered) {  in disk_unregister_independent_access_ranges()
163 		for (i = 0; i < iars->nr_ia_ranges; i++)  in disk_unregister_independent_access_ranges()
164 			kobject_del(&iars->ia_range[i].kobj);  in disk_unregister_independent_access_ranges()
165 		kobject_del(&iars->kobj);  in disk_unregister_independent_access_ranges()
166 		kobject_put(&iars->kobj);  in disk_unregister_independent_access_ranges()
171 	disk->ia_ranges = NULL;  in disk_unregister_independent_access_ranges()
181 	for (i = 0; i < iars->nr_ia_ranges; i++) {  in disk_find_ia_range()
182 		iar = &iars->ia_range[i];  in disk_find_ia_range()
183 		if (sector >= iar->sector &&  in disk_find_ia_range()
184 		    sector < iar->sector + iar->nr_sectors)  in disk_find_ia_range()
199 	if (WARN_ON_ONCE(!iars->nr_ia_ranges))  in disk_check_ia_ranges()
207 	for (i = 0; i < iars->nr_ia_ranges; i++) {  in disk_check_ia_ranges()
209 		if (!tmp || tmp->sector != sector) {  in disk_check_ia_ranges()
210 			pr_warn("Invalid non-contiguous independent access ranges\n");  in disk_check_ia_ranges()
214 		iar = &iars->ia_range[i];  in disk_check_ia_ranges()
216 			swap(iar->sector, tmp->sector);  in disk_check_ia_ranges()
217 			swap(iar->nr_sectors, tmp->nr_sectors);  in disk_check_ia_ranges()
220 		sector += iar->nr_sectors;  in disk_check_ia_ranges()
224 		pr_warn("Independent access ranges do not match disk capacity\n");  in disk_check_ia_ranges()
234 	struct blk_independent_access_ranges *old = disk->ia_ranges;  in disk_ia_ranges_changed()
240 	if (old->nr_ia_ranges != new->nr_ia_ranges)  in disk_ia_ranges_changed()
243 	for (i = 0; i < old->nr_ia_ranges; i++) {  in disk_ia_ranges_changed()
244 		if (new->ia_range[i].sector != old->ia_range[i].sector ||  in disk_ia_ranges_changed()
245 		    new->ia_range[i].nr_sectors != old->ia_range[i].nr_sectors)  in disk_ia_ranges_changed()
253  * disk_alloc_independent_access_ranges - Allocate an independent access ranges
254  *                                        data structure
256  * @nr_ia_ranges:	Number of independent access ranges
267 			    GFP_KERNEL, disk->queue->node);  in disk_alloc_independent_access_ranges()
269 		iars->nr_ia_ranges = nr_ia_ranges;  in disk_alloc_independent_access_ranges()
275  * disk_set_independent_access_ranges - Set a disk independent access ranges
277  * @iars:	independent access ranges structure
279  * Set the independent access ranges information of the request queue
280  * of @disk to @iars. If @iars is NULL and the independent access ranges
282  * @iars and the independent access ranges structure already set, @iars
288 	struct request_queue *q = disk->queue;  in disk_set_independent_access_ranges()
290 	mutex_lock(&q->sysfs_lock);  in disk_set_independent_access_ranges()
303 	 * set of independent access ranges and register the new set. If the  in disk_set_independent_access_ranges()
305 	 * will register the independent access ranges.  in disk_set_independent_access_ranges()
308 	disk->ia_ranges = iars;  in disk_set_independent_access_ranges()
312 	mutex_unlock(&q->sysfs_lock);  in disk_set_independent_access_ranges()