Commit c8f6f88d authored by Damien Le Moal's avatar Damien Le Moal Committed by Jens Axboe
Browse files

block: Clear zone limits for a non-zoned stacked queue 



Device mapper may create a non-zoned mapped device out of a zoned device
(e.g., the dm-zoned target). In such case, some queue limit such as the
max_zone_append_sectors and zone_write_granularity endup being non zero
values for a block device that is not zoned. Avoid this by clearing
these limits in blk_stack_limits() when the stacked zoned limit is
false.

Fixes: 3093a479 ("block: inherit the zoned characteristics in blk_stack_limits")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDamien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240222131724.1803520-1-dlemoal@kernel.org


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 0f225f87

block/blk-settings.c

+4 −0
Original line number Diff line number Diff line
@@ -865,6 +865,10 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, 
	t->zone_write_granularity = max(t->zone_write_granularity,

					b->zone_write_granularity);

	t->zoned = max(t->zoned, b->zoned);

	if (!t->zoned) {

		t->zone_write_granularity = 0;

		t->max_zone_append_sectors = 0;

	}

	return ret;

}

EXPORT_SYMBOL(blk_stack_limits);