Searched hist:dce8f8ed1de1d9d6d27c5ccd202ce4ec163b100c (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/include/linux/sched/ |
| H A D | signal.h | diff dce8f8ed1de1d9d6d27c5ccd202ce4ec163b100c Wed Aug 23 12:08:06 CDT 2023 Oleg Nesterov <oleg@redhat.com> document while_each_thread(), change first_tid() to use for_each_thread()
Add the comment to explain that while_each_thread(g,t) is not rcu-safe
unless g is stable (e.g. current). Even if g is a group leader and thus
can't exit before t, t or another sub-thread can exec and remove g from
the thread_group list.
The only lockless user of while_each_thread() is first_tid() and it is
fine in that it can't loop forever, yet for_each_thread() looks better and
I am going to change while_each_thread/next_thread.
Link: https://lkml.kernel.org/r/20230823170806.GA11724@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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| /openbmc/linux/fs/proc/ |
| H A D | base.c | diff dce8f8ed1de1d9d6d27c5ccd202ce4ec163b100c Wed Aug 23 12:08:06 CDT 2023 Oleg Nesterov <oleg@redhat.com> document while_each_thread(), change first_tid() to use for_each_thread()
Add the comment to explain that while_each_thread(g,t) is not rcu-safe
unless g is stable (e.g. current). Even if g is a group leader and thus
can't exit before t, t or another sub-thread can exec and remove g from
the thread_group list.
The only lockless user of while_each_thread() is first_tid() and it is
fine in that it can't loop forever, yet for_each_thread() looks better and
I am going to change while_each_thread/next_thread.
Link: https://lkml.kernel.org/r/20230823170806.GA11724@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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