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um: Set parent-death signal for ubd io thread/process

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The ubd io thread is not really a traditional thread. Set the
parent-death signal for it to ensure that it will be killed if
the UML kernel dies unexpectedly without proper cleanup.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241024142828.2612828-3-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Tiwei Bie 2024-10-24 22:28:26 +08:00 committed by Johannes Berg
parent 4e5adbe447
commit 9b5e6c0f5a
1 changed files with 1 additions and 0 deletions
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arch/um/drivers/ubd_kern.c
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@ -1499,6 +1499,7 @@ int io_thread(void *arg)
{
int n, count, written, res;
os_set_pdeathsig();
os_fix_helper_signals();
while(1){