6.12-stable review patch. If anyone has any objections, please let me know.
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From: John Garry john.g.garry@oracle.com
[ Upstream commit 5fb9d4341b782a80eefa0dc1664d131ac3c8885d ]
Same as done for raid0, set chunk_sectors limit to appropriately set the atomic write size limit.
Setting chunk_sectors limit in this way overrides the stacked limit already calculated based on the bottom device limits. This is ok, as when any bios are sent to the bottom devices, the block layer will still respect the bottom device chunk_sectors.
Reviewed-by: Nilay Shroff nilay@linux.ibm.com Reviewed-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: John Garry john.g.garry@oracle.com Reviewed-by: Martin K. Petersen martin.petersen@oracle.com Link: https://lore.kernel.org/r/20250711105258.3135198-6-john.g.garry@oracle.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-stripe.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 4112071de0be..c68dc1653cfd 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -459,6 +459,7 @@ static void stripe_io_hints(struct dm_target *ti, struct stripe_c *sc = ti->private; unsigned int chunk_size = sc->chunk_size << SECTOR_SHIFT;
+ limits->chunk_sectors = sc->chunk_size; limits->io_min = chunk_size; limits->io_opt = chunk_size * sc->stripes; }