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| author | Oleg Nesterov <[email protected]> | 2014-04-07 22:38:43 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-04-07 23:36:05 +0000 |
| commit | b436069059fede30ca31d4bf439cc86436ff5b1d (patch) | |
| tree | d5d6875cdd317445cb1e84883b5a078bf8cf1451 /fs/proc/array.c | |
| parent | wait: introduce EXIT_TRACE to avoid the racy EXIT_DEAD->EXIT_ZOMBIE transition (diff) | |
| download | kernel-b436069059fede30ca31d4bf439cc86436ff5b1d.tar.gz kernel-b436069059fede30ca31d4bf439cc86436ff5b1d.zip | |
wait: use EXIT_TRACE only if thread_group_leader(zombie)
wait_task_zombie() always uses EXIT_TRACE/ptrace_unlink() if
ptrace_reparented(). This is suboptimal and a bit confusing: we do not
need do_notify_parent(p) if !thread_group_leader(p) and in this case we
also do not need ptrace_unlink(), we can rely on ptrace_release_task().
Change wait_task_zombie() to check thread_group_leader() along with
ptrace_reparented() and simplify the final p->exit_state transition.
Signed-off-by: Oleg Nesterov <[email protected]>
Tested-by: Michal Schmidt <[email protected]>
Cc: Jan Kratochvil <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Lennart Poettering <[email protected]>
Cc: Roland McGrath <[email protected]>
Cc: Tejun Heo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions