rhashtable: Add rehash counter to bucket_table
authorHerbert Xu <herbert@gondor.apana.org.au>
Sat, 14 Mar 2015 02:57:24 +0000 (13:57 +1100)
committerDavid S. Miller <davem@davemloft.net>
Sun, 15 Mar 2015 05:35:34 +0000 (01:35 -0400)
commit63d512d0cffcae40505d9448abd509972465e846
tree61aa0d3763daf884a089e41f8f0f7b829b9357c4
parent9d901bc05153bbf33b5da2cd6266865e531f0545
rhashtable: Add rehash counter to bucket_table

This patch adds a rehash counter to bucket_table to indicate
the last bucket that has been rehashed.  This serves two purposes:

1. Any bucket that has been rehashed can never gain a new object.
2. If the rehash counter reaches the size of the table, the table
will forever remain empty.

This patch also downsizes bucket_table->size to an unsigned int
since we do not support sizes greater than 32 bits yet.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/rhashtable.h
lib/rhashtable.c
lib/test_rhashtable.c