dm: don't change md if dm_table_set_restrictions() fails

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[ Upstream commit 9eb7109a5b ]

__bind was changing the disk capacity, geometry and mempools of the
mapped device before calling dm_table_set_restrictions() which could
fail, forcing dm to drop the new table. Failing here would leave the
device using the old table but with the wrong capacity and mempools.

Move dm_table_set_restrictions() earlier in __bind(). Since it needs the
capacity to be set, save the old version and restore it on failure.

Fixes: bb37d77239 ("dm: introduce zone append emulation")
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Tested-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Benjamin Marzinski 2025-04-10 15:49:38 -04:00 • committed by Greg Kroah-Hartman

parent 9ace5644f5

commit 44133e7ba8

1 changed files with 12 additions and 10 deletions

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drivers/md/dm.c

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