[dm-devel] [PATCH 01/11] dm-zoned: store zone id within the zone structure and kill dmz_id()
Hannes Reinecke
hare at suse.de
Thu Apr 9 06:45:17 UTC 2020
Instead of calculating the zone index by the offset within the
zone array store the index within the structure itself. With that
the helper dmz_id() is pointless and can be replaced with accessing
the ->id value directly.
Signed-off-by: Hannes Reinecke <hare at suse.de>
---
drivers/md/dm-zoned-metadata.c | 40 +++++++++++++++-------------------
drivers/md/dm-zoned-reclaim.c | 17 +++++++--------
drivers/md/dm-zoned-target.c | 6 ++---
drivers/md/dm-zoned.h | 4 +++-
4 files changed, 31 insertions(+), 36 deletions(-)
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index c8787560fa9f..1993eeb26bc1 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -187,19 +187,14 @@ struct dmz_metadata {
/*
* Various accessors
*/
-unsigned int dmz_id(struct dmz_metadata *zmd, struct dm_zone *zone)
-{
- return ((unsigned int)(zone - zmd->zones));
-}
-
sector_t dmz_start_sect(struct dmz_metadata *zmd, struct dm_zone *zone)
{
- return (sector_t)dmz_id(zmd, zone) << zmd->dev->zone_nr_sectors_shift;
+ return (sector_t)zone->id << zmd->dev->zone_nr_sectors_shift;
}
sector_t dmz_start_block(struct dmz_metadata *zmd, struct dm_zone *zone)
{
- return (sector_t)dmz_id(zmd, zone) << zmd->dev->zone_nr_blocks_shift;
+ return (sector_t)zone->id << zmd->dev->zone_nr_blocks_shift;
}
unsigned int dmz_nr_zones(struct dmz_metadata *zmd)
@@ -1119,6 +1114,7 @@ static int dmz_init_zone(struct blk_zone *blkz, unsigned int idx, void *data)
INIT_LIST_HEAD(&zone->link);
atomic_set(&zone->refcount, 0);
+ zone->id = idx;
zone->chunk = DMZ_MAP_UNMAPPED;
switch (blkz->type) {
@@ -1246,7 +1242,7 @@ static int dmz_update_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
ret = -EIO;
if (ret < 0) {
dmz_dev_err(zmd->dev, "Get zone %u report failed",
- dmz_id(zmd, zone));
+ zone->id);
dmz_check_bdev(zmd->dev);
return ret;
}
@@ -1270,7 +1266,7 @@ static int dmz_handle_seq_write_err(struct dmz_metadata *zmd,
return ret;
dmz_dev_warn(zmd->dev, "Processing zone %u write error (zone wp %u/%u)",
- dmz_id(zmd, zone), zone->wp_block, wp);
+ zone->id, zone->wp_block, wp);
if (zone->wp_block < wp) {
dmz_invalidate_blocks(zmd, zone, zone->wp_block,
@@ -1309,7 +1305,7 @@ static int dmz_reset_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
dev->zone_nr_sectors, GFP_NOIO);
if (ret) {
dmz_dev_err(dev, "Reset zone %u failed %d",
- dmz_id(zmd, zone), ret);
+ zone->id, ret);
return ret;
}
}
@@ -1757,8 +1753,7 @@ struct dm_zone *dmz_get_chunk_buffer(struct dmz_metadata *zmd,
}
/* Update the chunk mapping */
- dmz_set_chunk_mapping(zmd, dzone->chunk, dmz_id(zmd, dzone),
- dmz_id(zmd, bzone));
+ dmz_set_chunk_mapping(zmd, dzone->chunk, dzone->id, bzone->id);
set_bit(DMZ_BUF, &bzone->flags);
bzone->chunk = dzone->chunk;
@@ -1810,7 +1805,7 @@ struct dm_zone *dmz_alloc_zone(struct dmz_metadata *zmd, unsigned long flags)
atomic_dec(&zmd->unmap_nr_seq);
if (dmz_is_offline(zone)) {
- dmz_dev_warn(zmd->dev, "Zone %u is offline", dmz_id(zmd, zone));
+ dmz_dev_warn(zmd->dev, "Zone %u is offline", zone->id);
zone = NULL;
goto again;
}
@@ -1852,7 +1847,7 @@ void dmz_map_zone(struct dmz_metadata *zmd, struct dm_zone *dzone,
unsigned int chunk)
{
/* Set the chunk mapping */
- dmz_set_chunk_mapping(zmd, chunk, dmz_id(zmd, dzone),
+ dmz_set_chunk_mapping(zmd, chunk, dzone->id,
DMZ_MAP_UNMAPPED);
dzone->chunk = chunk;
if (dmz_is_rnd(dzone))
@@ -1880,7 +1875,7 @@ void dmz_unmap_zone(struct dmz_metadata *zmd, struct dm_zone *zone)
* Unmapping the chunk buffer zone: clear only
* the chunk buffer mapping
*/
- dzone_id = dmz_id(zmd, zone->bzone);
+ dzone_id = zone->bzone->id;
zone->bzone->bzone = NULL;
zone->bzone = NULL;
@@ -1942,7 +1937,7 @@ static struct dmz_mblock *dmz_get_bitmap(struct dmz_metadata *zmd,
sector_t chunk_block)
{
sector_t bitmap_block = 1 + zmd->nr_map_blocks +
- (sector_t)(dmz_id(zmd, zone) * zmd->zone_nr_bitmap_blocks) +
+ (sector_t)(zone->id * zmd->zone_nr_bitmap_blocks) +
(chunk_block >> DMZ_BLOCK_SHIFT_BITS);
return dmz_get_mblock(zmd, bitmap_block);
@@ -2022,7 +2017,7 @@ int dmz_validate_blocks(struct dmz_metadata *zmd, struct dm_zone *zone,
unsigned int n = 0;
dmz_dev_debug(zmd->dev, "=> VALIDATE zone %u, block %llu, %u blocks",
- dmz_id(zmd, zone), (unsigned long long)chunk_block,
+ zone->id, (unsigned long long)chunk_block,
nr_blocks);
WARN_ON(chunk_block + nr_blocks > zone_nr_blocks);
@@ -2052,7 +2047,7 @@ int dmz_validate_blocks(struct dmz_metadata *zmd, struct dm_zone *zone,
zone->weight += n;
else {
dmz_dev_warn(zmd->dev, "Zone %u: weight %u should be <= %u",
- dmz_id(zmd, zone), zone->weight,
+ zone->id, zone->weight,
zone_nr_blocks - n);
zone->weight = zone_nr_blocks;
}
@@ -2102,7 +2097,7 @@ int dmz_invalidate_blocks(struct dmz_metadata *zmd, struct dm_zone *zone,
unsigned int n = 0;
dmz_dev_debug(zmd->dev, "=> INVALIDATE zone %u, block %llu, %u blocks",
- dmz_id(zmd, zone), (u64)chunk_block, nr_blocks);
+ zone->id, (u64)chunk_block, nr_blocks);
WARN_ON(chunk_block + nr_blocks > zmd->dev->zone_nr_blocks);
@@ -2132,7 +2127,7 @@ int dmz_invalidate_blocks(struct dmz_metadata *zmd, struct dm_zone *zone,
zone->weight -= n;
else {
dmz_dev_warn(zmd->dev, "Zone %u: weight %u should be >= %u",
- dmz_id(zmd, zone), zone->weight, n);
+ zone->id, zone->weight, n);
zone->weight = 0;
}
@@ -2378,7 +2373,7 @@ static void dmz_cleanup_metadata(struct dmz_metadata *zmd)
int dmz_ctr_metadata(struct dmz_dev *dev, struct dmz_metadata **metadata)
{
struct dmz_metadata *zmd;
- unsigned int i, zid;
+ unsigned int i;
struct dm_zone *zone;
int ret;
@@ -2419,9 +2414,8 @@ int dmz_ctr_metadata(struct dmz_dev *dev, struct dmz_metadata **metadata)
goto err;
/* Set metadata zones starting from sb_zone */
- zid = dmz_id(zmd, zmd->sb_zone);
for (i = 0; i < zmd->nr_meta_zones << 1; i++) {
- zone = dmz_get(zmd, zid + i);
+ zone = dmz_get(zmd, zmd->sb_zone->id + i);
if (!dmz_is_rnd(zone))
goto err;
set_bit(DMZ_META, &zone->flags);
diff --git a/drivers/md/dm-zoned-reclaim.c b/drivers/md/dm-zoned-reclaim.c
index e7ace908a9b7..7f57c4299a2f 100644
--- a/drivers/md/dm-zoned-reclaim.c
+++ b/drivers/md/dm-zoned-reclaim.c
@@ -80,7 +80,7 @@ static int dmz_reclaim_align_wp(struct dmz_reclaim *zrc, struct dm_zone *zone,
if (ret) {
dmz_dev_err(zrc->dev,
"Align zone %u wp %llu to %llu (wp+%u) blocks failed %d",
- dmz_id(zmd, zone), (unsigned long long)wp_block,
+ zone->id, (unsigned long long)wp_block,
(unsigned long long)block, nr_blocks, ret);
dmz_check_bdev(zrc->dev);
return ret;
@@ -196,8 +196,8 @@ static int dmz_reclaim_buf(struct dmz_reclaim *zrc, struct dm_zone *dzone)
dmz_dev_debug(zrc->dev,
"Chunk %u, move buf zone %u (weight %u) to data zone %u (weight %u)",
- dzone->chunk, dmz_id(zmd, bzone), dmz_weight(bzone),
- dmz_id(zmd, dzone), dmz_weight(dzone));
+ dzone->chunk, bzone->id, dmz_weight(bzone),
+ dzone->id, dmz_weight(dzone));
/* Flush data zone into the buffer zone */
ret = dmz_reclaim_copy(zrc, bzone, dzone);
@@ -235,8 +235,8 @@ static int dmz_reclaim_seq_data(struct dmz_reclaim *zrc, struct dm_zone *dzone)
dmz_dev_debug(zrc->dev,
"Chunk %u, move data zone %u (weight %u) to buf zone %u (weight %u)",
- chunk, dmz_id(zmd, dzone), dmz_weight(dzone),
- dmz_id(zmd, bzone), dmz_weight(bzone));
+ chunk, dzone->id, dmz_weight(dzone),
+ bzone->id, dmz_weight(bzone));
/* Flush data zone into the buffer zone */
ret = dmz_reclaim_copy(zrc, dzone, bzone);
@@ -287,8 +287,7 @@ static int dmz_reclaim_rnd_data(struct dmz_reclaim *zrc, struct dm_zone *dzone)
dmz_dev_debug(zrc->dev,
"Chunk %u, move rnd zone %u (weight %u) to seq zone %u",
- chunk, dmz_id(zmd, dzone), dmz_weight(dzone),
- dmz_id(zmd, szone));
+ chunk, dzone->id, dmz_weight(dzone), szone->id);
/* Flush the random data zone into the sequential zone */
ret = dmz_reclaim_copy(zrc, dzone, szone);
@@ -403,12 +402,12 @@ static int dmz_do_reclaim(struct dmz_reclaim *zrc)
if (ret) {
dmz_dev_debug(zrc->dev,
"Metadata flush for zone %u failed, err %d\n",
- dmz_id(zmd, rzone), ret);
+ rzone->id, ret);
return ret;
}
dmz_dev_debug(zrc->dev, "Reclaimed zone %u in %u ms",
- dmz_id(zmd, rzone), jiffies_to_msecs(jiffies - start));
+ rzone->id, jiffies_to_msecs(jiffies - start));
return 0;
}
diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c
index 44e30a7de8b9..7268e0af9e17 100644
--- a/drivers/md/dm-zoned-target.c
+++ b/drivers/md/dm-zoned-target.c
@@ -180,7 +180,7 @@ static int dmz_handle_read(struct dmz_target *dmz, struct dm_zone *zone,
dmz_dev_debug(dmz->dev, "READ chunk %llu -> %s zone %u, block %llu, %u blocks",
(unsigned long long)dmz_bio_chunk(dmz->dev, bio),
(dmz_is_rnd(zone) ? "RND" : "SEQ"),
- dmz_id(dmz->metadata, zone),
+ zone->id,
(unsigned long long)chunk_block, nr_blocks);
/* Check block validity to determine the read location */
@@ -317,7 +317,7 @@ static int dmz_handle_write(struct dmz_target *dmz, struct dm_zone *zone,
dmz_dev_debug(dmz->dev, "WRITE chunk %llu -> %s zone %u, block %llu, %u blocks",
(unsigned long long)dmz_bio_chunk(dmz->dev, bio),
(dmz_is_rnd(zone) ? "RND" : "SEQ"),
- dmz_id(dmz->metadata, zone),
+ zone->id,
(unsigned long long)chunk_block, nr_blocks);
if (dmz_is_rnd(zone) || chunk_block == zone->wp_block) {
@@ -357,7 +357,7 @@ static int dmz_handle_discard(struct dmz_target *dmz, struct dm_zone *zone,
dmz_dev_debug(dmz->dev, "DISCARD chunk %llu -> zone %u, block %llu, %u blocks",
(unsigned long long)dmz_bio_chunk(dmz->dev, bio),
- dmz_id(zmd, zone),
+ zone->id,
(unsigned long long)chunk_block, nr_blocks);
/*
diff --git a/drivers/md/dm-zoned.h b/drivers/md/dm-zoned.h
index 884c0e586082..30781646741a 100644
--- a/drivers/md/dm-zoned.h
+++ b/drivers/md/dm-zoned.h
@@ -87,6 +87,9 @@ struct dm_zone {
/* Zone activation reference count */
atomic_t refcount;
+ /* Zone id */
+ unsigned int id;
+
/* Zone write pointer block (relative to the zone start block) */
unsigned int wp_block;
@@ -176,7 +179,6 @@ void dmz_lock_flush(struct dmz_metadata *zmd);
void dmz_unlock_flush(struct dmz_metadata *zmd);
int dmz_flush_metadata(struct dmz_metadata *zmd);
-unsigned int dmz_id(struct dmz_metadata *zmd, struct dm_zone *zone);
sector_t dmz_start_sect(struct dmz_metadata *zmd, struct dm_zone *zone);
sector_t dmz_start_block(struct dmz_metadata *zmd, struct dm_zone *zone);
unsigned int dmz_nr_chunks(struct dmz_metadata *zmd);
--
2.25.0
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