From 866d65745b635927c3d1343ab67e6fd4a99d116d Mon Sep 17 00:00:00 2001 From: Damien Le Moal Date: Sat, 15 Nov 2025 21:15:51 +0900 Subject: [PATCH] zloop: make the write pointer of full zones invalid 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: eb0570c7df23 ("block: new zoned loop block device driver") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal Signed-off-by: Jens Axboe --- drivers/block/zloop.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/block/zloop.c b/drivers/block/zloop.c index 92be9f0af00a1..a975b1d07f1c5 100644 --- a/drivers/block/zloop.c +++ b/drivers/block/zloop.c @@ -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) -- 2.47.3