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SubjectRe: [PATCH] mm/vmalloc: reduce half comparison during pcpu_get_vm_areas()
On Thu, Aug 03, 2017 at 02:38:22PM +0800, Wei Yang wrote:
> In pcpu_get_vm_areas(), it checks each range is not overlapped. To make
> sure it is, only (N^2)/2 comparison is necessary, while current code does
> N^2 times. By starting from the next range, it achieves the goal and the
> continue could be removed.
> At the mean time, other two work in this patch:
> * the overlap check of two ranges could be done with one clause
> * one typo in comment is fixed.
> Signed-off-by: Wei Yang <>

Acked-by: Tejun Heo <>



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