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| author |   Ingo Molnar <mingo@kernel.org> | 2012-12-02 19:56:46 +0000 |
|---|---|---|
| committer |   Mel Gorman <mgorman@suse.de> | 2012-12-11 14:43:00 +0000 |
| commit | 5a505085f043e8380f83610f79642853c051e2f1 (patch) | |
| tree | c9e86ee196b1ef87350ee9b268a515e2eae4d307 /mm/ksm.c | |
| parent | mm: migrate: Account a transhuge page properly when rate limiting (diff) | |
| download | linux-dev-5a505085f043e8380f83610f79642853c051e2f1.tar.xz linux-dev-5a505085f043e8380f83610f79642853c051e2f1.zip | |
mm/rmap: Convert the struct anon_vma::mutex to an rwsem
Convert the struct anon_vma::mutex to an rwsem, which will help
in solving a page-migration scalability problem. (Addressed in
a separate patch.)
The conversion is simple and straightforward: in every case
where we mutex_lock()ed we'll now down_write().
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Turner <pjt@google.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions