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dm: clear unmap write zeroes limits when disabling write zeroes

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The unmap write zeroes limits have been set to the stacking queue limits
by default in blk_set_stacking_limits() and blk_stack_limits(), but it
should be cleared if any underlying device does not support it.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/20250619111806.3546162-6-yi.zhang@huaweicloud.com
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Zhang Yi
2025-06-23 12:45:13 +02:00
committed by Christian Brauner
parent 6dffe079fe
commit 2c46eab8da
1 changed files with 3 additions and 1 deletions
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drivers/md/dm-table.c
+3 -1
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@@ -2065,8 +2065,10 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
limits->discard_alignment = 0;
}
if (!dm_table_supports_write_zeroes(t))
if (!dm_table_supports_write_zeroes(t)) {
limits->max_write_zeroes_sectors = 0;
limits->max_hw_wzeroes_unmap_sectors = 0;
}
if (!dm_table_supports_secure_erase(t))
limits->max_secure_erase_sectors = 0;