From: Konstantin Khlebnikov <khlebnikov@openvz.org>
To: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: 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>,
Matt Helsley <matthltc@us.ibm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE
Date: Mon, 02 Apr 2012 14:13:49 +0400 [thread overview]
Message-ID: <4F797BDD.2020905@openvz.org> (raw)
In-Reply-To: <20120402095444.GE7607@moon>
Cyrill Gorcunov wrote:
> On Mon, Apr 02, 2012 at 01:46:03PM +0400, Konstantin Khlebnikov wrote:
>> Cyrill Gorcunov wrote:
>>> On Sat, Mar 31, 2012 at 10:13:24PM +0200, Oleg Nesterov wrote:
>>>>
>>>> Add Cyrill. This conflicts with
>>>> c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch in -mm.
>>>
>>> Thanks for CC'ing, Oleg. I think if thise series go in it won't
>>> be a problem to update my patch accordingly.
>>
>> In this patch I leave mm->exe_file lockless.
>> After exec/fork we can change it only for current task and only if mm->mm_users == 1.
>>
>> something like this:
>>
>> task_lock(current);
>> if (atomic_read(¤t->mm->mm_users) == 1)
>> set_mm_exe_file(current->mm, new_file);
>> else
>> ret = -EBUSY;
>> task_unlock(current);
>>
>> task_lock() protect this code against get_task_mm()
>
> I see. Konstantin, the question is what is more convenient way to update the
> patch in linux-next. The c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch
> is in -mm already, so I either should wait until Andrew pick your series up and
> send updating patch on top, or I could fetch your series, update my patch and
> send it here as reply. Hmm?
Let's wait for Andrew's response. And maybe somebody disagree with my changes.
next prev parent reply other threads:[~2012-04-02 10:13 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 [this message]
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
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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