The patch titled
wait_task_zombie: remove ->exit_state/exit_signal checks for WNOWAIT
has been removed from the -mm tree. Its filename was
wait_task_zombie-remove-exit_state-exit_signal-checks-for-wnowait.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: wait_task_zombie: remove ->exit_state/exit_signal checks for WNOWAIT
From: Oleg Nesterov <oleg@xxxxxxxxxx>
The first "p->exit_state != EXIT_ZOMBIE" check doesn't make too much sense.
The exit_state was EXIT_ZOMBIE when the function was called, and another
thread can change it to EXIT_DEAD right after the check.
The second condition is not possible, detached non-traced threads were already
filtered out by eligible_child(), we didn't drop tasklist since then.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Roland McGrath <roland@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/exit.c | 4 ----
1 file changed, 4 deletions(-)
diff -puN kernel/exit.c~wait_task_zombie-remove-exit_state-exit_signal-checks-for-wnowait kernel/exit.c
--- a/kernel/exit.c~wait_task_zombie-remove-exit_state-exit_signal-checks-for-wnowait
+++ a/kernel/exit.c
@@ -1196,10 +1196,6 @@ static int wait_task_zombie(struct task_
int exit_code = p->exit_code;
int why, status;
- if (unlikely(p->exit_state != EXIT_ZOMBIE))
- return 0;
- if (unlikely(p->exit_signal == -1 && p->ptrace == 0))
- return 0;
get_task_struct(p);
read_unlock(&tasklist_lock);
if ((exit_code & 0x7f) == 0) {
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
revert-proc-fix-the-threaded-proc-self.patch
procfs-task-exe-symlink.patch
procfs-task-exe-symlink-fix.patch
-
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