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SYSCTL: Add a mutex to the page_alloc zone order sysctl
authorAndi Kleen <ak@linux.intel.com>
Wed, 23 Dec 2009 20:00:47 +0000 (21:00 +0100)
committerAndi Kleen <ak@linux.intel.com>
Wed, 23 Dec 2009 20:01:16 +0000 (21:01 +0100)
commit443c6f145de813518c36ac6b6e4e08d9445337e7
treed0d635c07185b06ddcd2a82f6b2c90c188366431tree | snapshot (tar.gz zip)
parent4440095c8268c1a5e11577097d2be429cec036cacommit | diff
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>
mm/page_alloc.c diff | blob | blame | history