From: Linus Torvalds <torvalds@linux-foundation.org>
To: Matt Helsley <matthltc@us.ibm.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Oleg Nesterov <oleg@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Eric Paris <eparis@redhat.com>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>,
"oprofile-list@lists.sf.net" <oprofile-list@lists.sf.net>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE
Date: Thu, 5 Apr 2012 14:55:29 -0700 [thread overview]
Message-ID: <CA+55aFzH=nTAxxqMpQKJAVFOEngwkArmufqe_Mq5hyLR_9Vfqw@mail.gmail.com> (raw)
In-Reply-To: <20120405214447.GC7761@count0.beaverton.ibm.com>
On Thu, Apr 5, 2012 at 2:44 PM, Matt Helsley <matthltc@us.ibm.com> wrote:
>
> I don't think the definition of an ABI is whether there's documentation
> for it. It's whether the interface is used or not. At least that's the
> impression I've gotten from reading Linus' rants over the years.
Yes.
That said, I *do* have some very dim memory of us having had real
issues with the /proc/<pid>/exe thing and having regressions due to
holding refcounts to executables that were a.out binaries and not
demand-loaded. And people wanting to unmount filesystems despite the
binaries being live.
That said, I suspect that whatever issues we used to have with that
are pretty long gone. I don't think people use non-mmap'ed binaries
any more. So I think we can try it and see. And revert if somebody
actually notices and has problems.
Linus
next prev parent reply other threads:[~2012-04-05 21:56 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-31 9:25 [PATCH 0/7] mm: vma->vm_flags diet Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 1/7] mm, x86, PAT: rework linear pfn-mmap tracking Konstantin Khlebnikov
2012-03-31 17:09 ` [PATCH 1/7 v2] " Konstantin Khlebnikov
2012-04-03 0:46 ` [x86 PAT PATCH 0/2] x86 PAT vm_flag code refactoring Suresh Siddha
2012-04-03 0:46 ` [x86 PAT PATCH 1/2] x86, pat: remove the dependency on 'vm_pgoff' in track/untrack pfn vma routines Suresh Siddha
2012-04-03 5:37 ` Konstantin Khlebnikov
2012-04-03 23:31 ` Suresh Siddha
2012-04-04 4:43 ` Konstantin Khlebnikov
2012-04-05 11:56 ` Konstantin Khlebnikov
2012-04-06 0:01 ` [v3 VM_PAT PATCH 0/3] x86 VM_PAT series Suresh Siddha
2012-04-06 0:01 ` [v3 VM_PAT PATCH 1/3] x86, pat: remove the dependency on 'vm_pgoff' in track/untrack pfn vma routines Suresh Siddha
2012-04-06 0:01 ` [v3 VM_PAT PATCH 2/3] x86, pat: separate the pfn attribute tracking for remap_pfn_range and vm_insert_pfn Suresh Siddha
2012-04-06 0:01 ` [v3 VM_PAT PATCH 3/3] mm, x86, PAT: rework linear pfn-mmap tracking Suresh Siddha
2012-04-03 0:46 ` [x86 PAT PATCH 2/2] " Suresh Siddha
2012-04-03 5:48 ` Konstantin Khlebnikov
2012-04-03 5:55 ` Konstantin Khlebnikov
2012-04-03 6:03 ` [x86 PAT PATCH 0/2] x86 PAT vm_flag code refactoring Konstantin Khlebnikov
2012-04-03 23:14 ` Suresh Siddha
2012-04-04 4:40 ` Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 2/7] mm: introduce vma flag VM_ARCH_1 Konstantin Khlebnikov
2012-03-31 22:25 ` Benjamin Herrenschmidt
2012-03-31 9:29 ` [PATCH 3/7] mm: kill vma flag VM_CAN_NONLINEAR Konstantin Khlebnikov
2012-03-31 17:01 ` Linus Torvalds
2012-03-31 9:29 ` [PATCH 4/7] mm: kill vma flag VM_INSERTPAGE Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 5/7] mm, drm/udl: fixup vma flags on mmap Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE Konstantin Khlebnikov
2012-03-31 20:13 ` Oleg Nesterov
2012-03-31 20:39 ` Cyrill Gorcunov
2012-04-02 9:46 ` Konstantin Khlebnikov
2012-04-02 9:54 ` Cyrill Gorcunov
2012-04-02 10:13 ` Konstantin Khlebnikov
2012-04-02 14:48 ` Oleg Nesterov
2012-04-02 16:02 ` Cyrill Gorcunov
2012-04-02 16:19 ` Konstantin Khlebnikov
2012-04-02 16:27 ` Cyrill Gorcunov
2012-04-02 17:14 ` Konstantin Khlebnikov
2012-04-02 18:05 ` Cyrill Gorcunov
2012-04-02 23:04 ` Matt Helsley
2012-04-03 5:10 ` Konstantin Khlebnikov
2012-04-03 18:16 ` Matt Helsley
2012-04-03 19:32 ` Cyrill Gorcunov
2012-04-05 20:29 ` Matt Helsley
2012-04-05 20:53 ` Cyrill Gorcunov
2012-04-05 21:04 ` Konstantin Khlebnikov
2012-04-05 21:44 ` Matt Helsley
2012-04-05 21:55 ` Linus Torvalds [this message]
2012-04-06 4:36 ` Konstantin Khlebnikov
2012-04-02 23:18 ` Matt Helsley
2012-04-03 5:06 ` Konstantin Khlebnikov
2012-04-06 22:48 ` Andrew Morton
2012-03-31 9:29 ` [PATCH 7/7] mm: move madvise vma flags to the end Konstantin Khlebnikov
2012-03-31 14:06 ` [PATCH 0/7] mm: vma->vm_flags diet Andi Kleen
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