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

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[ Upstream commit c8f6f88d25 ]

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: 3093a47972 ("block: inherit the zoned characteristics in blk_stack_limits")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20240222131724.1803520-1-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Damien Le Moal 2024-02-22 22:17:23 +09:00 committed by Greg Kroah-Hartman
parent 447753bdd6
commit d05e6ba1b7
1 changed files with 4 additions and 0 deletions
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4
block/blk-settings.c
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@ -647,6 +647,10 @@ 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);