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zdev: Implement --no-settle

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There are some situations where running "udevadm settle" can result in
a deadlock, such as in the early stages of initial RAM-disk processing.

Introduce a new command-line option --no-settle that can be used to
suppress calling "udevadm settle" to allow chzdev to be run in such
situations.

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Oberparleiter
2017-09-01 11:05:53 +02:00
committed by Jan Höppner
parent 7d355b0fec
commit f32bff9688
5 changed files with 23 additions and 0 deletions
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zdev/src/chzdev_usage.txt
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@@ -54,5 +54,6 @@ OPTIONS
--no-root-update Skip root device update
--dry-run Display changes without applying
--base PATH Use PATH as base for accessing files
--no-settle Do not wait for udev to settle
-V, --verbose Print additional run-time information
-q, --quiet Print only minimal run-time information