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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-03-18 20:01:15 +1100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-18 12:46:40 -0400 |
| commit | 6aebd940840a4d3a0a8ffc5883d3892f4bd61e90 (patch) | |
| tree | 2f3e6778b2105a446ce41a09f7d29c078119d63f /lib/rhashtable.c | |
| parent | a61bfa65facebd64403c94ebdab50323ce8942b2 (diff) | |
| download | lwn-6aebd940840a4d3a0a8ffc5883d3892f4bd61e90.tar.gz lwn-6aebd940840a4d3a0a8ffc5883d3892f4bd61e90.zip | |
rhashtable: Remove shift from bucket_table
Keeping both size and shift is silly. We only need one.
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 | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/rhashtable.c b/lib/rhashtable.c index 09a7ada89ade..097400362467 100644 --- a/lib/rhashtable.c +++ b/lib/rhashtable.c @@ -162,7 +162,6 @@ static struct bucket_table *bucket_table_alloc(struct rhashtable *ht, return NULL; tbl->size = nbuckets; - tbl->shift = ilog2(nbuckets); if (alloc_bucket_locks(ht, tbl) < 0) { bucket_table_free(tbl); @@ -189,7 +188,7 @@ static bool rht_grow_above_75(const struct rhashtable *ht, { /* Expand table when exceeding 75% load */ return atomic_read(&ht->nelems) > (tbl->size / 4 * 3) && - (!ht->p.max_shift || tbl->shift < ht->p.max_shift); + (!ht->p.max_shift || tbl->size < (1 << ht->p.max_shift)); } /** @@ -202,7 +201,7 @@ static bool rht_shrink_below_30(const struct rhashtable *ht, { /* Shrink table beneath 30% load */ return atomic_read(&ht->nelems) < (tbl->size * 3 / 10) && - tbl->shift > ht->p.min_shift; + tbl->size > (1 << ht->p.min_shift); } static int rhashtable_rehash_one(struct rhashtable *ht, unsigned old_hash) |