netfilter: x_tables: Add note about how to free percpu counters

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Due to the way percpu counters are allocated and freed in blocks,
it is not safe to free counters individually.  Currently all callers
do the right thing, but let's note this restriction.

Fixes: ae0ac0ed6f ("netfilter: x_tables: pack percpu counter allocations")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Ben Hutchings 2018-03-29 15:12:41 +01:00 • committed by Pablo Neira Ayuso

parent c47d36b385

commit 9ba5c404bf

1 changed files with 3 additions and 1 deletions

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net/netfilter/x_tables.c

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