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signal: Have the oom killer detect coredumps using signal->core_state

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In preparation for removing the flag SIGNAL_GROUP_COREDUMP, change
__task_will_free_mem to test signal->core_state instead of the flag
SIGNAL_GROUP_COREDUMP.

Both fields are protected by siglock and both live in signal_struct so
there are no real tradeoffs here, just a change to which field is
being tested.

Link: https://lkml.kernel.org/r/20211213225350.27481-3-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2021-11-19 11:29:48 -06:00
parent de77c3a5b9
commit 98b24b16b2
1 changed files with 1 additions and 1 deletions
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2
mm/oom_kill.c
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@ -793,7 +793,7 @@ static inline bool __task_will_free_mem(struct task_struct *task)
* coredump_task_exit(), so the oom killer cannot assume that
* the process will promptly exit and release memory.
*/
if (sig->flags & SIGNAL_GROUP_COREDUMP)
if (sig->core_state)
return false;
if (sig->flags & SIGNAL_GROUP_EXIT)