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| author | Herbert Xu | 2015-03-14 03:57:24 +0100 |
|---|---|---|
| committer | David S. Miller | 2015-03-15 06:35:34 +0100 |
| commit | 63d512d0cffcae40505d9448abd509972465e846 (patch) | |
| tree | 61aa0d3763daf884a089e41f8f0f7b829b9357c4 /lib/rhashtable.c | |
| parent | rhashtable: Free bucket tables asynchronously after rehash (diff) | |
| download | kernel-qcow2-linux-63d512d0cffcae40505d9448abd509972465e846.tar.gz kernel-qcow2-linux-63d512d0cffcae40505d9448abd509972465e846.tar.xz kernel-qcow2-linux-63d512d0cffcae40505d9448abd509972465e846.zip | |
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>
Diffstat (limited to 'lib/rhashtable.c')
| -rw-r--r-- | lib/rhashtable.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rhashtable.c b/lib/rhashtable.c index 36fb0910bec2..ff4ea1704546 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -260,6 +260,7 @@ static void rhashtable_rehash_chain(struct rhashtable *ht, unsigned old_hash) spin_lock_bh(old_bucket_lock); while (!rhashtable_rehash_one(ht, old_hash)) ; + old_tbl->rehash++; spin_unlock_bh(old_bucket_lock); } |