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zloop: make the write pointer of full zones invalid

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The write pointer of zones that are in the full condition is always
invalid. Reflect that fact by setting the write pointer of full zones
to ULLONG_MAX.

Fixes: eb0570c7df ("block: new zoned loop block device driver")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2025-11-15 21:15:51 +09:00 committed by Jens Axboe
parent 6483faa393
commit 866d65745b
1 changed files with 5 additions and 3 deletions
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8
drivers/block/zloop.c
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@ -177,7 +177,7 @@ static int zloop_update_seq_zone(struct zloop_device *zlo, unsigned int zone_no)
zone->wp = zone->start;
} else if (file_sectors == zlo->zone_capacity) {
zone->cond = BLK_ZONE_COND_FULL;
zone->wp = zone->start + zlo->zone_size;
zone->wp = ULLONG_MAX;
} else {
zone->cond = BLK_ZONE_COND_CLOSED;
zone->wp = zone->start + file_sectors;
@ -326,7 +326,7 @@ static int zloop_finish_zone(struct zloop_device *zlo, unsigned int zone_no)
}
zone->cond = BLK_ZONE_COND_FULL;
zone->wp = zone->start + zlo->zone_size;
zone->wp = ULLONG_MAX;
clear_bit(ZLOOP_ZONE_SEQ_ERROR, &zone->flags);
unlock:
@ -433,8 +433,10 @@ static void zloop_rw(struct zloop_cmd *cmd)
* copmpletes.
*/
zone->wp += nr_sectors;
if (zone->wp == zone_end)
if (zone->wp == zone_end) {
zone->cond = BLK_ZONE_COND_FULL;
zone->wp = ULLONG_MAX;
}
}
rq_for_each_bvec(tmp, rq, rq_iter)