From: Christoph Hellwig <hch@lst.de>
To: Suren Baghdasaryan <surenb@google.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Jann Horn <jannh@google.com>, Minchan Kim <minchan@kernel.org>,
Christoph Hellwig <hch@lst.de>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>, Michal Hocko <mhocko@suse.com>,
David Rientjes <rientjes@google.com>,
Matthew Wilcox <willy@infradead.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Roman Gushchin <guro@fb.com>, Rik van Riel <riel@surriel.com>,
Christian Brauner <christian@brauner.io>,
Oleg Nesterov <oleg@redhat.com>,
Tim Murray <timmurray@google.com>,
Linux API <linux-api@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
kernel list <linux-kernel@vger.kernel.org>,
kernel-team <kernel-team@android.com>
Subject: Re: [PATCH 1/2] mm/madvise: allow process_madvise operations on entire memory range
Date: Wed, 23 Dec 2020 08:57:12 +0100 [thread overview]
Message-ID: <20201223075712.GA4719@lst.de> (raw)
In-Reply-To: <CAJuCfpGiVS69kznSrAdosxnRd-zgXPJd8MXou=gd8K8j7xLMjA@mail.gmail.com>
On Tue, Dec 22, 2020 at 09:48:43AM -0800, Suren Baghdasaryan wrote:
> Thanks for the feedback! The use case is userspace memory reaping
> similar to oom-reaper. Detailed justification is here:
> https://lore.kernel.org/linux-mm/20201124053943.1684874-1-surenb@google.com
Given that this new variant of process_madvise
a) does not work on an address range
b) is destructive
c) doesn't share much code at all with the rest of process_madvise
Why not add a proper separate syscall?
next prev parent reply other threads:[~2020-12-23 7:58 UTC|newest]
Thread overview: 20+ 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 ` [PATCH 1/2] mm/madvise: allow process_madvise operations on entire memory range Suren Baghdasaryan
2020-11-25 23:13 ` Minchan Kim
2020-11-25 23:23 ` Suren Baghdasaryan
2020-11-25 23:43 ` Minchan Kim
2020-11-30 19:01 ` Suren Baghdasaryan
2020-12-08 7:23 ` Suren Baghdasaryan
2020-12-11 20:27 ` Jann Horn
2020-12-11 23:01 ` Minchan Kim
2020-12-12 0:16 ` Jann Horn
2020-12-22 13:44 ` Christoph Hellwig
2020-12-22 17:48 ` Suren Baghdasaryan
2020-12-23 4:09 ` Suren Baghdasaryan
2020-12-23 7:57 ` Christoph Hellwig [this message]
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 13:42 ` Oleg Nesterov
2020-11-24 16:42 ` Suren Baghdasaryan
2020-12-08 23:40 ` Jann Horn
2020-12-08 23:59 ` Suren Baghdasaryan
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