[GIT PULL] percpu: finer grained locking

[Tejun Heo]

Hello,

Please pull from the following git vector.

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git tj-percpu

This patchset makes locking in dynamic percpu allocator finer grained
to break deadlock[1] and allow atomic free.

This patchset is on top of the current x86/core/percpu[2] contains the
following patches.

 0001-percpu-replace-pcpu_realloc-with-pcpu_mem_alloc.patch
 0002-percpu-move-chunk-area-map-extension-out-of-area-al.patch
 0003-percpu-move-fully-free-chunk-reclamation-into-a-wor.patch
 0004-percpu-finer-grained-locking-to-break-deadlock-and.patch

0001-0003 prepare for finer grained locking.  0004 implements it.

Diffstat follows.

 mm/percpu.c |  365 ++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 245 insertions(+), 120 deletions(-)

Thanks.

--
tejun

[1] http://thread.gmane.org/gmane.linux.kernel/802384
[2] 6b19b0c2400437a3c10059ede0e59b517092e1bd
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