tree d0d635c07185b06ddcd2a82f6b2c90c188366431
parent 4440095c8268c1a5e11577097d2be429cec036ca
author Andi Kleen <ak@linux.intel.com> 1261598447 +0100
committer Andi Kleen <ak@linux.intel.com> 1261598476 +0100

SYSCTL: Add a mutex to the page_alloc zone order sysctl

The zone list code clearly cannot tolerate concurrent writers (I couldn't
find any locks for that), so simply add a global mutex. No need for RCU
in this case.

Signed-off-by: Andi Kleen <ak@linux.intel.com>