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authorRusty Russell <rusty@rustcorp.com.au>2009-01-01 02:42:30 +0300
committerRusty Russell <rusty@rustcorp.com.au>2009-01-01 02:42:30 +0300
commit2a53008033189ed09bfe241c6b33811ba4ce980d (patch)
tree86dcdacdd7fbaf671f2487b7a05352aa672fecc1 /arch/ia64
parent5db0e1e9e0f30f160b832a0b5cd1131954bf4f6e (diff)
downloadlinux-2a53008033189ed09bfe241c6b33811ba4ce980d.tar.xz
cpumask: zero extra bits in alloc_cpumask_var_node
Impact: extra safety checks during transition When CONFIG_CPUMASKS_OFFSTACK is set, the new cpumask_ operators only use bits up to nr_cpu_ids, not NR_CPUS. Using the old cpus_ operators on these masks can mean accessing undefined bits. After some discussion, Mike and I decided to err on the side of caution; we zero the "undefined" bits in alloc_cpumask_var_node() until all the old cpumask functions are removed. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'arch/ia64')
0 files changed, 0 insertions, 0 deletions