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authorChristoph Lameter <cl@linux.com>2010-12-06 11:40:03 -0600
committerTejun Heo <tj@kernel.org>2010-12-17 15:18:04 +0100
commitcfb824349556904b319464139be5c75fce983b0d (patch)
treee0f0094ffc8732457ae1233e5e2890788e3817ff /fs/buffer.c
parent908ee0f122bf2a67414854af5b90c6621d186a71 (diff)
highmem: Use this_cpu_xx_return() operations
Use this_cpu operations to optimize access primitives for highmem. The main effect is the avoidance of address calculations through the use of a segment prefix. V3->V4 - kmap_atomic_idx: Do not return a value. - Use __this_cpu_dec without HIGHMEM_DEBUG Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Catalin Marinas <catalin.marinas@arm.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'fs/buffer.c')
0 files changed, 0 insertions, 0 deletions