linux-kernel - Re: [PATCH 0/8] mm: Preemptibility -v8

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Date:	Thu, 17 Feb 2011 18:36:24 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Avi Kivity <avi@...hat.com>, Thomas Gleixner <tglx@...utronix.de>,
	Rik van Riel <riel@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	akpm@...ux-foundation.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-mm@...ck.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	David Miller <davem@...emloft.net>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Mel Gorman <mel@....ul.ie>, Nick Piggin <npiggin@...nel.dk>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Yanmin Zhang <yanmin_zhang@...ux.intel.com>
Subject: Re: [PATCH 0/8] mm: Preemptibility -v8

On Thu, 2011-02-17 at 18:05 +0100, Peter Zijlstra wrote:
> This series depends on the previous two series:
>   - mm: Simplify anon_vma lifetime rules
>   - mm: mmu_gather rework
> 
> These patches make part of the mm a lot more preemptible. It converts
> i_mmap_lock and anon_vma->lock to mutexes which together with the mmu_gather
> rework makes mmu_gather preemptible as well.
> 
> Making i_mmap_lock a mutex also enables a clean-up of the truncate code.
> 
> This also allows for preemptible mmu_notifiers, something that XPMEM I think
> wants.

---
 Documentation/lockstat.txt   |    2 
 Documentation/vm/locking     |    2 
 arch/x86/mm/hugetlbpage.c    |    4 
 fs/gfs2/main.c               |    2 
 fs/hugetlbfs/inode.c         |    4 
 fs/inode.c                   |    2 
 fs/nilfs2/page.c             |    2 
 include/linux/fs.h           |    3 
 include/linux/huge_mm.h      |    8 -
 include/linux/lockdep.h      |    3 
 include/linux/mm.h           |    2 
 include/linux/mm_types.h     |    1 
 include/linux/mmu_notifier.h |    2 
 include/linux/mutex.h        |    9 +
 include/linux/rmap.h         |   29 +-----
 kernel/fork.c                |    5 -
 kernel/mutex.c               |   25 +++--
 mm/filemap.c                 |   10 +-
 mm/filemap_xip.c             |    4 
 mm/fremap.c                  |    4 
 mm/huge_memory.c             |    4 
 mm/hugetlb.c                 |   14 +--
 mm/memory-failure.c          |    4 
 mm/memory.c                  |  197 ++++++-------------------------------------
 mm/migrate.c                 |   17 ---
 mm/mmap.c                    |   43 +++------
 mm/mremap.c                  |    7 -
 mm/rmap.c                    |  171 +++++++++++++++++++++++++++++--------
 28 files changed, 258 insertions(+), 322 deletions(-)

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