percpu: use metadata blocks to update the chunk contig hint

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The largest free region will either be a block level contig hint or an
aggregate over the left_free and right_free areas of blocks. This is a
much smaller set of free areas that need to be checked than a full
traverse.

Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Dennis Zhou (Facebook) 2017-07-24 19:02:18 -04:00 • committed by Tejun Heo

parent b185cd0dc6

commit 525ca84dae

1 changed files with 70 additions and 10 deletions

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mm/percpu.c

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