From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-mm@kvack.org, jack@suse.cz, Arnd Bergmann <arnd@arndb.de>,
linux-nvdimm@lists.01.org, linux-api@vger.kernel.org,
luto@kernel.org, akpm@linux-foundation.org,
torvalds@linux-foundation.org, hch@lst.de
Subject: Re: [PATCH 2/2] mm: introduce MAP_VALIDATE, a mechanism for for safely defining new mmap flags
Date: Thu, 31 Aug 2017 12:03:59 +0200 [thread overview]
Message-ID: <20170831100359.GD21443@lst.de> (raw)
In-Reply-To: <150413450616.5923.7069852068237042023.stgit@dwillia2-desk3.amr.corp.intel.com>
> +/*
> + * The historical set of flags that all mmap implementations implicitly
> + * support when file_operations.mmap_supported_mask is zero. With the
> + * mmap3 syscall the deprecated MAP_DENYWRITE and MAP_EXECUTABLE bit
> + * values are explicitly rejected with EOPNOTSUPP rather than being
> + * silently accepted.
> + */
no mmap3 syscall here :)
Do you also need to update the nommu mmap implementation?
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: jack@suse.cz, Arnd Bergmann <arnd@arndb.de>,
linux-nvdimm@lists.01.org, linux-api@vger.kernel.org,
linux-mm@kvack.org, luto@kernel.org, akpm@linux-foundation.org,
torvalds@linux-foundation.org, hch@lst.de
Subject: Re: [PATCH 2/2] mm: introduce MAP_VALIDATE, a mechanism for for safely defining new mmap flags
Date: Thu, 31 Aug 2017 12:03:59 +0200 [thread overview]
Message-ID: <20170831100359.GD21443@lst.de> (raw)
In-Reply-To: <150413450616.5923.7069852068237042023.stgit@dwillia2-desk3.amr.corp.intel.com>
> +/*
> + * The historical set of flags that all mmap implementations implicitly
> + * support when file_operations.mmap_supported_mask is zero. With the
> + * mmap3 syscall the deprecated MAP_DENYWRITE and MAP_EXECUTABLE bit
> + * values are explicitly rejected with EOPNOTSUPP rather than being
> + * silently accepted.
> + */
no mmap3 syscall here :)
Do you also need to update the nommu mmap implementation?
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next prev parent reply other threads:[~2017-08-31 10:03 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 23:08 [PATCH 0/2] MAP_VALIDATE and mmap flags validation Dan Williams
2017-08-30 23:08 ` Dan Williams
2017-08-30 23:08 ` Dan Williams
[not found] ` <150413449482.5923.1348069619036923853.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-08-30 23:08 ` [PATCH 1/2] vfs: add flags parameter to ->mmap() in 'struct file_operations' Dan Williams
2017-08-30 23:08 ` Dan Williams
2017-08-30 23:08 ` Dan Williams
[not found] ` <150413450036.5923.13851061508172314879.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-08-31 10:02 ` Christoph Hellwig
2017-08-31 10:02 ` Christoph Hellwig
2017-08-31 10:02 ` Christoph Hellwig
2017-09-01 0:54 ` Dan Williams
2017-08-30 23:08 ` [PATCH 2/2] mm: introduce MAP_VALIDATE, a mechanism for for safely defining new mmap flags Dan Williams
2017-08-30 23:08 ` Dan Williams
2017-08-30 23:08 ` Dan Williams
2017-08-31 10:03 ` Christoph Hellwig [this message]
2017-08-31 10:03 ` Christoph Hellwig
[not found] ` <20170831100359.GD21443-jcswGhMUV9g@public.gmane.org>
2017-09-01 1:01 ` Dan Williams
2017-09-01 1:01 ` Dan Williams
[not found] ` <CAPcyv4jvTB4Aiei1-fGybyJNopXQy9zADpnFcuRNdZCS4Mf1QQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-01 1:27 ` Linus Torvalds
2017-09-01 1:27 ` Linus Torvalds
[not found] ` <CA+55aFwsfUj1f41w8hqt9LN3-ajmJ=2AB1Nb6ZzwHgE1OKxGOw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-01 1:40 ` Dan Williams
2017-09-01 1:40 ` Dan Williams
2017-09-01 1:40 ` Dan Williams
2017-09-01 7:34 ` Christoph Hellwig
2017-09-01 7:34 ` Christoph Hellwig
2017-08-31 16:49 ` Linus Torvalds
2017-08-31 16:49 ` Linus Torvalds
[not found] ` <CA+55aFzo4oV87tVjEzx+cHVxfihm=31+fWtsdWow3AmfsdzJJw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-31 21:31 ` Dan Williams
2017-08-31 21:31 ` Dan Williams
2017-08-31 21:31 ` Dan Williams
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