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signal: Rename group_exit_task group_exec_task

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The only remaining user of group_exit_task is exec.  Rename the field
so that it is clear which part of the code uses it.

Update the comment above the definition of group_exec_task to document
how it is currently used.

Link: https://lkml.kernel.org/r/20211213225350.27481-7-ebiederm@xmission.com
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2021-06-06 13:47:53 -05:00
parent 6ac79ec537
commit 60700e38fb
3 changed files with 10 additions and 14 deletions
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8
fs/exec.c
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@@ -1054,7 +1054,7 @@ static int de_thread(struct task_struct *tsk)
return -EAGAIN;
}
sig->group_exit_task = tsk;
sig->group_exec_task = tsk;
sig->notify_count = zap_other_threads(tsk);
if (!thread_group_leader(tsk))
sig->notify_count--;
@@ -1082,7 +1082,7 @@ static int de_thread(struct task_struct *tsk)
write_lock_irq(&tasklist_lock);
/*
* Do this under tasklist_lock to ensure that
* exit_notify() can't miss ->group_exit_task
* exit_notify() can't miss ->group_exec_task
*/
sig->notify_count = -1;
if (likely(leader->exit_state))
@@ -1149,7 +1149,7 @@ static int de_thread(struct task_struct *tsk)
release_task(leader);
}
sig->group_exit_task = NULL;
sig->group_exec_task = NULL;
sig->notify_count = 0;
no_thread_group:
@@ -1162,7 +1162,7 @@ no_thread_group:
killed:
/* protects against exit_notify() and __exit_signal() */
read_lock(&tasklist_lock);
sig->group_exit_task = NULL;
sig->group_exec_task = NULL;
sig->notify_count = 0;
read_unlock(&tasklist_lock);
return -EAGAIN;