The patch titled
coredump: speedup SIGKILL sending
has been removed from the -mm tree. Its filename is
coredump-speedup-sigkill-sending.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: coredump: speedup SIGKILL sending
From: Oleg Nesterov <oleg@xxxxxxxxxx>
With this patch a thread group is killed atomically under ->siglock. This is
faster because we can use sigaddset() instead of force_sig_info() and this is
used in further patches.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Acked-by: Roland McGrath <roland@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/exec.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff -puN fs/exec.c~coredump-speedup-sigkill-sending fs/exec.c
--- a/fs/exec.c~coredump-speedup-sigkill-sending
+++ a/fs/exec.c
@@ -1371,17 +1371,24 @@ static void format_corename(char *corena
static void zap_process(struct task_struct *start, int *ptraced)
{
struct task_struct *t;
+ unsigned long flags;
+
+ spin_lock_irqsave(&start->sighand->siglock, flags);
t = start;
do {
if (t != current && t->mm) {
t->mm->core_waiters++;
- force_sig_specific(SIGKILL, t);
+ sigaddset(&t->pending.signal, SIGKILL);
+ signal_wake_up(t, 1);
+
if (unlikely(t->ptrace) &&
unlikely(t->parent->mm == t->mm))
*ptraced = 1;
}
} while ((t = next_thread(t)) != start);
+
+ spin_unlock_irqrestore(&start->sighand->siglock, flags);
}
static void zap_threads (struct mm_struct *mm)
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
sched-uninline-task_rq_lock.patch
-
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