6.8-stable review patch. If anyone has any objections, please let me know.
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From: Damien Le Moal dlemoal@kernel.org
[ Upstream commit c8f6f88d25929ad2f290b428efcae3b526f3eab0 ]
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: 3093a479727b ("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 --- block/blk-settings.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/block/blk-settings.c b/block/blk-settings.c index 06ea91e51b8b2..5adadce084086 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -689,6 +689,10 @@ 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);