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Name Last Modified Last Commit
master-next 2021-12-16 11:50:21 UTC
UBUNTU: [Config] raspi: Set BLK_DEV_LOOP_MIN_COUNT=8

Author: Juerg Haefliger
Author Date: 2021-12-13 12:53:04 UTC

UBUNTU: [Config] raspi: Set BLK_DEV_LOOP_MIN_COUNT=8

Buglink: https://bugs.launchpad.net/bugs/1948807

This config was set to 256 in Artful raspi for no apparent reason which
means that the kernel creates 256 loop devices at boot. A recent security
fix [1] introduced a slight delay when loop devices are created which in
turn results in a ~3.5 seconds boot delay of the raspi kernel. Fix that by
setting the config back to 8 (the default), which also matches all the
other Ubuntu kernels.

Verfied that core 18 and 20 create additional loop devices as needed to
mount snaps.

[1] 2cafe29a8d03 ("block: fix race between adding/removing rq qos and normal IO")

Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Juerg Haefliger <juergh@canonical.com>

master 2021-11-19 10:41:46 UTC
UBUNTU: Ubuntu-raspi-5.13.0-1011.13

Author: Juerg Haefliger
Author Date: 2021-11-19 10:41:46 UTC

UBUNTU: Ubuntu-raspi-5.13.0-1011.13

Signed-off-by: Juerg Haefliger <juergh@canonical.com>

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