On 4/7/20 3:47 AM, Damien Le Moal wrote:
On 2020/04/07 2:26, Hannes Reinecke wrote:
Instead of calculating the zone index by the offset within the
zone array store the index within the structure itself.
Signed-off-by: Hannes Reinecke <[email protected]>
---
drivers/md/dm-zoned-metadata.c | 3 ++-
drivers/md/dm-zoned.h | 3 +++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index c8787560fa9f..afce594067fb 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -189,7 +189,7 @@ struct dmz_metadata {
*/
unsigned int dmz_id(struct dmz_metadata *zmd, struct dm_zone *zone)
{
- return ((unsigned int)(zone - zmd->zones));
+ return zone->id;
The zmd argument is now unused, and the helper does not make much sense anymore.
Why not just drop it entirely ? Callers directly referencing the ->id field of a
zone is simple and clear.
}
sector_t dmz_start_sect(struct dmz_metadata *zmd, struct dm_zone *zone)
@@ -1119,6 +1119,7 @@ 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) {
diff --git a/drivers/md/dm-zoned.h b/drivers/md/dm-zoned.h
index 884c0e586082..39d59898abbe 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;
Indeed, you are right. Will be doing so for the next round.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
[email protected] +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
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