1 /* SPDX-License-Identifier: GPL-2.0 */
13 #include <linux/device-mapper.h>
14 #include <linux/dm-kcopyd.h>
21 #include <linux/radix-tree.h>
25  * dm-zoned creates block devices with 4KB blocks, always.
29 #define DMZ_BLOCK_MASK		(DMZ_BLOCK_SIZE - 1)
33 #define DMZ_BLOCK_MASK_BITS	(DMZ_BLOCK_SIZE_BITS - 1)
35 #define DMZ_BLOCK_SECTORS_SHIFT	(DMZ_BLOCK_SHIFT - SECTOR_SHIFT)
37 #define DMZ_BLOCK_SECTORS_MASK	(DMZ_BLOCK_SECTORS - 1)
40  * 4KB block <-> 512B sector conversion.
45 #define dmz_bio_block(bio)	dmz_sect2blk((bio)->bi_iter.bi_sector)
84 #define dmz_bio_chunk(zmd, bio)	((bio)->bi_iter.bi_sector >> \
86 #define dmz_chunk_block(zmd, b)	((b) & (dmz_zone_nr_blocks(zmd) - 1))
122 	 * For a sequential data zone, pointer to the random zone
123 	 * used as a buffer for processing unaligned writes.
124 	 * For a buffer zone, this points back to the data zone.
157 #define dmz_is_cache(z)		test_bit(DMZ_CACHE, &(z)->flags)  argument
158 #define dmz_is_rnd(z)		test_bit(DMZ_RND, &(z)->flags)  argument
159 #define dmz_is_seq(z)		test_bit(DMZ_SEQ, &(z)->flags)  argument
160 #define dmz_is_empty(z)		((z)->wp_block == 0)  argument
161 #define dmz_is_offline(z)	test_bit(DMZ_OFFLINE, &(z)->flags)  argument
162 #define dmz_is_readonly(z)	test_bit(DMZ_READ_ONLY, &(z)->flags)  argument
163 #define dmz_in_reclaim(z)	test_bit(DMZ_RECLAIM, &(z)->flags)  argument
164 #define dmz_is_reserved(z)	test_bit(DMZ_RESERVED, &(z)->flags)  argument
165 #define dmz_seq_write_err(z)	test_bit(DMZ_SEQ_WRITE_ERR, &(z)->flags)  argument
166 #define dmz_reclaim_should_terminate(z) \  argument
167 				test_bit(DMZ_RECLAIM_TERMINATE, &(z)->flags)
169 #define dmz_is_meta(z)		test_bit(DMZ_META, &(z)->flags)  argument
170 #define dmz_is_buf(z)		test_bit(DMZ_BUF, &(z)->flags)  argument
171 #define dmz_is_data(z)		test_bit(DMZ_DATA, &(z)->flags)  argument
173 #define dmz_weight(z)		((z)->weight)  argument
179 	DMINFO("(%s): " format, (dev)->name, ## args)
182 	DMERR("(%s): " format, (dev)->name, ## args)
185 	DMWARN("(%s): " format, (dev)->name, ## args)
188 	DMDEBUG("(%s): " format, (dev)->name, ## args)
191  * Functions defined in dm-zoned-metadata.c
239  * Activate a zone (increment its reference count).
243 	atomic_inc(&zone->refcount);  in dmz_activate_zone()
271  * Functions defined in dm-zoned-reclaim.c
281  * Functions defined in dm-zoned-target.c
287  * Deactivate a zone. This decrement the zone reference counter
292 	dmz_reclaim_bio_acc(zone->dev->reclaim);  in dmz_deactivate_zone()
293 	atomic_dec(&zone->refcount);  in dmz_deactivate_zone()
297  * Test if a zone is active, that is, has a refcount > 0.
301 	return atomic_read(&zone->refcount);  in dmz_is_active()