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authorHerbert Xu <herbert@gondor.apana.org.au>2015-03-10 01:27:55 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-11 23:28:25 +0300
commit988dfbd795cf08b00576c1ced4210281b2bccffc (patch)
tree535e1fbd7224c49386a5de1a8afc16948078489e /include/linux/rhashtable.h
parent0ddcf43d5d4a03ded1ee3f6b3b72a0cbed4e90b1 (diff)
downloadlinux-988dfbd795cf08b00576c1ced4210281b2bccffc.tar.xz
rhashtable: Move hash_rnd into bucket_table
Currently hash_rnd is a parameter that users can set. However, no existing users set this parameter. It is also something that people are unlikely to want to set directly since it's just a random number. In preparation for allowing the reseeding/rehashing of rhashtable, this patch moves hash_rnd into bucket_table so that it's now an internal state rather than a parameter. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/rhashtable.h')
-rw-r--r--include/linux/rhashtable.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index d438eeb08bff..5ef8ea551556 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -49,12 +49,14 @@ struct rhash_head {
/**
* struct bucket_table - Table of hash buckets
* @size: Number of hash buckets
+ * @hash_rnd: Random seed to fold into hash
* @locks_mask: Mask to apply before accessing locks[]
* @locks: Array of spinlocks protecting individual buckets
* @buckets: size * hash buckets
*/
struct bucket_table {
size_t size;
+ u32 hash_rnd;
unsigned int locks_mask;
spinlock_t *locks;
@@ -72,7 +74,6 @@ struct rhashtable;
* @key_len: Length of key
* @key_offset: Offset of key in struct to be hashed
* @head_offset: Offset of rhash_head in struct to be hashed
- * @hash_rnd: Seed to use while hashing
* @max_shift: Maximum number of shifts while expanding
* @min_shift: Minimum number of shifts while shrinking
* @nulls_base: Base value to generate nulls marker
@@ -85,7 +86,6 @@ struct rhashtable_params {
size_t key_len;
size_t key_offset;
size_t head_offset;
- u32 hash_rnd;
size_t max_shift;
size_t min_shift;
u32 nulls_base;