From: Oleg Nesterov <oleg@redhat.com>
To: Suren Baghdasaryan <surenb@google.com>
Cc: akpm@linux-foundation.org, mhocko@kernel.org, mhocko@suse.com,
rientjes@google.com, willy@infradead.org, hannes@cmpxchg.org,
guro@fb.com, riel@surriel.com, minchan@kernel.org,
christian@brauner.io, timmurray@google.com,
linux-api@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@android.com
Subject: Re: [PATCH 2/2] mm/madvise: add process_madvise MADV_DONTNEER support
Date: Tue, 24 Nov 2020 14:42:09 +0100 [thread overview]
Message-ID: <20201124134208.GA30125@redhat.com> (raw)
In-Reply-To: <20201124053943.1684874-3-surenb@google.com>
On 11/23, Suren Baghdasaryan wrote:
>
> + if (madvise_destructive(behavior)) {
> + /* Allow destructive madvise only on a dying processes */
> + if (!signal_group_exit(task->signal)) {
signal_group_exit(task) is true if this task execs and kills other threads,
see the comment above this helper.
I think you need !(task->signal->flags & SIGNAL_GROUP_EXIT).
Oleg.
next prev parent reply other threads:[~2020-11-24 13:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-24 5:39 [PATCH 0/2] userspace memory reaping using process_madvise Suren Baghdasaryan
2020-11-24 5:39 ` Suren Baghdasaryan
2020-11-24 5:39 ` [PATCH 1/2] mm/madvise: allow process_madvise operations on entire memory range Suren Baghdasaryan
2020-11-24 5:39 ` Suren Baghdasaryan
2020-11-25 23:13 ` Minchan Kim
2020-11-25 23:23 ` Suren Baghdasaryan
2020-11-25 23:23 ` Suren Baghdasaryan
2020-11-25 23:43 ` Minchan Kim
2020-11-30 19:01 ` Suren Baghdasaryan
2020-11-30 19:01 ` Suren Baghdasaryan
2020-12-08 7:23 ` Suren Baghdasaryan
2020-12-08 7:23 ` Suren Baghdasaryan
2020-12-11 20:27 ` Jann Horn
2020-12-11 20:27 ` Jann Horn
2020-12-11 23:01 ` Minchan Kim
2020-12-12 0:16 ` Jann Horn
2020-12-12 0:16 ` Jann Horn
2020-12-22 13:44 ` Christoph Hellwig
2020-12-22 17:48 ` Suren Baghdasaryan
2020-12-22 17:48 ` Suren Baghdasaryan
2020-12-23 4:09 ` Suren Baghdasaryan
2020-12-23 4:09 ` Suren Baghdasaryan
2020-12-23 7:57 ` Christoph Hellwig
2020-12-23 17:32 ` Suren Baghdasaryan
2020-12-23 17:32 ` Suren Baghdasaryan
2020-11-24 5:39 ` [PATCH 2/2] mm/madvise: add process_madvise MADV_DONTNEER support Suren Baghdasaryan
2020-11-24 5:39 ` Suren Baghdasaryan
2020-11-24 13:42 ` Oleg Nesterov [this message]
2020-11-24 16:42 ` Suren Baghdasaryan
2020-11-24 16:42 ` Suren Baghdasaryan
2020-12-08 23:40 ` Jann Horn
2020-12-08 23:40 ` Jann Horn
2020-12-08 23:59 ` Suren Baghdasaryan
2020-12-08 23:59 ` Suren Baghdasaryan
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