From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Andrea Arcangeli <aarcange@redhat.com>,
Minchan Kim <minchan@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 2/7] mm: introduce vma flag VM_ARCH_1
Date: Sun, 01 Apr 2012 08:25:14 +1000 [thread overview]
Message-ID: <1333232714.30734.6.camel@pasglop> (raw)
In-Reply-To: <20120331092910.19920.29396.stgit@zurg>
On Sat, 2012-03-31 at 13:29 +0400, Konstantin Khlebnikov wrote:
> This patch shuffles some bits in vma->vm_flags
>
> before patch:
>
> 0x00000200 0x01000000 0x20000000 0x40000000
> x86 VM_NOHUGEPAGE VM_HUGEPAGE - VM_PAT
> powerpc - - VM_SAO -
> parisc VM_GROWSUP - - -
> ia64 VM_GROWSUP - - -
> nommu - VM_MAPPED_COPY - -
> others - - - -
>
> after patch:
>
> 0x00000200 0x01000000 0x20000000 0x40000000
> x86 - VM_PAT VM_HUGEPAGE VM_NOHUGEPAGE
> powerpc - VM_SAO - -
> parisc - VM_GROWSUP - -
> ia64 - VM_GROWSUP - -
> nommu - VM_MAPPED_COPY - -
> others - VM_ARCH_1 - -
>
> And voila! One completely free bit.
Great :-) Let me know when you free VM_ARCH_2 as well as I have good use
for it too :-)
Cheers,
Ben.
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WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Andrea Arcangeli <aarcange@redhat.com>,
Minchan Kim <minchan@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 2/7] mm: introduce vma flag VM_ARCH_1
Date: Sun, 01 Apr 2012 08:25:14 +1000 [thread overview]
Message-ID: <1333232714.30734.6.camel@pasglop> (raw)
In-Reply-To: <20120331092910.19920.29396.stgit@zurg>
On Sat, 2012-03-31 at 13:29 +0400, Konstantin Khlebnikov wrote:
> This patch shuffles some bits in vma->vm_flags
>
> before patch:
>
> 0x00000200 0x01000000 0x20000000 0x40000000
> x86 VM_NOHUGEPAGE VM_HUGEPAGE - VM_PAT
> powerpc - - VM_SAO -
> parisc VM_GROWSUP - - -
> ia64 VM_GROWSUP - - -
> nommu - VM_MAPPED_COPY - -
> others - - - -
>
> after patch:
>
> 0x00000200 0x01000000 0x20000000 0x40000000
> x86 - VM_PAT VM_HUGEPAGE VM_NOHUGEPAGE
> powerpc - VM_SAO - -
> parisc - VM_GROWSUP - -
> ia64 - VM_GROWSUP - -
> nommu - VM_MAPPED_COPY - -
> others - VM_ARCH_1 - -
>
> And voila! One completely free bit.
Great :-) Let me know when you free VM_ARCH_2 as well as I have good use
for it too :-)
Cheers,
Ben.
next prev parent reply other threads:[~2012-03-31 22:25 UTC|newest]
Thread overview: 102+ 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 9:25 ` Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 1/7] mm, x86, PAT: rework linear pfn-mmap tracking Konstantin Khlebnikov
2012-03-31 9:29 ` Konstantin Khlebnikov
2012-03-31 17:09 ` [PATCH 1/7 v2] " Konstantin Khlebnikov
2012-03-31 17:09 ` 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 ` 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 0:46 ` Suresh Siddha
2012-04-03 5:37 ` Konstantin Khlebnikov
2012-04-03 5:37 ` Konstantin Khlebnikov
2012-04-03 23:31 ` Suresh Siddha
2012-04-04 4:43 ` Konstantin Khlebnikov
2012-04-04 4:43 ` Konstantin Khlebnikov
2012-04-05 11:56 ` 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 ` 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 ` 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 ` Suresh Siddha
2012-04-06 0:01 ` [v3 VM_PAT PATCH 3/3] mm, x86, PAT: rework linear pfn-mmap tracking Suresh Siddha
2012-04-06 0:01 ` Suresh Siddha
2012-04-03 0:46 ` [x86 PAT PATCH 2/2] " Suresh Siddha
2012-04-03 0:46 ` Suresh Siddha
2012-04-03 5:48 ` Konstantin Khlebnikov
2012-04-03 5:48 ` Konstantin Khlebnikov
2012-04-03 5:55 ` 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 6:03 ` Konstantin Khlebnikov
2012-04-03 23:14 ` Suresh Siddha
2012-04-03 23:14 ` Suresh Siddha
2012-04-04 4:40 ` Konstantin Khlebnikov
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 9:29 ` Konstantin Khlebnikov
2012-03-31 22:25 ` Benjamin Herrenschmidt [this message]
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 9:29 ` Konstantin Khlebnikov
2012-03-31 17:01 ` Linus Torvalds
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 ` 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 ` Konstantin Khlebnikov
2012-03-31 9:29 ` [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE Konstantin Khlebnikov
2012-03-31 9:29 ` Konstantin Khlebnikov
2012-03-31 20:13 ` Oleg Nesterov
2012-03-31 20:13 ` Oleg Nesterov
2012-03-31 20:39 ` Cyrill Gorcunov
2012-03-31 20:39 ` Cyrill Gorcunov
2012-04-02 9:46 ` Konstantin Khlebnikov
2012-04-02 9:46 ` Konstantin Khlebnikov
2012-04-02 9:54 ` Cyrill Gorcunov
2012-04-02 9:54 ` Cyrill Gorcunov
2012-04-02 10:13 ` Konstantin Khlebnikov
2012-04-02 10:13 ` Konstantin Khlebnikov
2012-04-02 14:48 ` Oleg Nesterov
2012-04-02 14:48 ` Oleg Nesterov
2012-04-02 16:02 ` Cyrill Gorcunov
2012-04-02 16:02 ` Cyrill Gorcunov
2012-04-02 16:19 ` Konstantin Khlebnikov
2012-04-02 16:19 ` Konstantin Khlebnikov
2012-04-02 16:27 ` Cyrill Gorcunov
2012-04-02 16:27 ` Cyrill Gorcunov
2012-04-02 17:14 ` Konstantin Khlebnikov
2012-04-02 18:05 ` Cyrill Gorcunov
2012-04-02 18:05 ` Cyrill Gorcunov
2012-04-02 23:04 ` Matt Helsley
2012-04-02 23:04 ` Matt Helsley
2012-04-03 5:10 ` Konstantin Khlebnikov
2012-04-03 5:10 ` Konstantin Khlebnikov
2012-04-03 18:16 ` Matt Helsley
2012-04-03 18:16 ` Matt Helsley
2012-04-03 19:32 ` Cyrill Gorcunov
2012-04-03 19:32 ` Cyrill Gorcunov
2012-04-05 20:29 ` Matt Helsley
2012-04-05 20:29 ` Matt Helsley
2012-04-05 20:53 ` Cyrill Gorcunov
2012-04-05 20:53 ` Cyrill Gorcunov
2012-04-05 21:04 ` Konstantin Khlebnikov
2012-04-05 21:04 ` Konstantin Khlebnikov
2012-04-05 21:44 ` Matt Helsley
2012-04-05 21:44 ` Matt Helsley
2012-04-05 21:55 ` Linus Torvalds
2012-04-05 21:55 ` Linus Torvalds
2012-04-06 4:36 ` Konstantin Khlebnikov
2012-04-06 4:36 ` Konstantin Khlebnikov
2012-04-02 23:18 ` Matt Helsley
2012-04-02 23:18 ` Matt Helsley
2012-04-03 5:06 ` Konstantin Khlebnikov
2012-04-03 5:06 ` Konstantin Khlebnikov
2012-04-06 22:48 ` Andrew Morton
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 9:29 ` Konstantin Khlebnikov
2012-03-31 14:06 ` [PATCH 0/7] mm: vma->vm_flags diet Andi Kleen
2012-03-31 14:06 ` Andi Kleen
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