Message-Id: <20080319211950.342967909@sgi.com>
User-Agent: quilt/0.46-1
Date: Wed, 19 Mar 2008 14:19:50 -0700
From: Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
Cc: Robin Holt <holt@sgi.com>
Cc: steiner@sgi.com
Cc: Rusty Russell <rusty@rustcorp.com.au>
Subject-Prefix: [patch @num@/@total@]
Subject: [RFC] MMU Notifier CL-pre2-V4

Another private round? Maybe we can get agreement on something to submit to Andrew.

Changes vs. CL-pre1-V4:

- Fix mm_unlock/lock (hopefully right now)
- Move both into mmu_notifier.c (mmu notifier is the only user for now)

Changes vs. Andrea V12

- Comments to explain locking
- Merge missing EMM pieces
- Resequence patches
- Simplify mlock
- Deal with lock dropping in unmap_range
  (had to introduce rwsem_is_contended() for that)
- Update descriptions.

The most important piece that would be good to review is
the locking description in mmu_notifiers.h (the descriptions
are short they will not be included in the source).

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