| From: |
| Peter Zijlstra <a.p.zijlstra@chello.nl> |
| To: |
| Andrea Arcangeli <aarcange@redhat.com>,
Avi Kivity <avi@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Rik van Riel <riel@redhat.com>, Ingo Molnar <mingo@elte.hu>,
akpm@linux-foundation.org,
Linus Torvalds <torvalds@linux-foundation.org> |
| Subject: |
| [PATCH 00/20] mm: Preemptibility -v10 |
| Date: |
| Fri, 01 Apr 2011 14:12:58 +0200 |
| Message-ID: |
| <20110401121258.211963744@chello.nl> |
| Cc: |
| linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
David Miller <davem@davemloft.net>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul McKenney <paulmck@linux.vnet.ibm.com>,
Yanmin Zhang <yanmin_zhang@linux.intel.com> |
| Archive‑link: | |
Article |
Another -rc1, another posting.
Rework the existing mmu_gather infrastructure.
The direct purpose of these patches was to allow preemptible mmu_gather,
but even without that I think these patches provide an improvement to the
status quo.
The first 9 patches rework the mmu_gather infrastructure. For review purpose
I've split them into generic and per-arch patches with the last of those a
generic cleanup.
Also provided is a rollup of these patches, which is used as a commit in the
git tree referenced below.
The next patch provides generic RCU page-table freeing, and the follow up
is a patch converting s390 to use this. I've also got 4 patches from
DaveM lined up (not included in this series) that uses this to implement
gup_fast() for sparc64.
Then there is one patch that extends the generic mmu_gather batching.
After that follow the mm preemptibility patches, these 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.
Furthermore, it removes the new and universially detested unmap_mutex.
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-mmu_gather.git
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