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UMA: unsign some variables related to allocation in hash_alloc().

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As a followup to r343673, unsign some variables related to allocation
since the hashsize cannot be negative. This gives a bit more space to
handle bigger allocations and avoid some implicit casting.

While here also unsign uh_hashmask, it makes little sense to keep that
signed.

MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D19148
This commit is contained in:
pfg 2019-02-12 04:33:05 +00:00
parent 872ad8da9c
commit 793037178f
2 changed files with 10 additions and 10 deletions
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14
sys/vm/uma_core.c
View File

@ -622,7 +622,7 @@ zone_timeout(uma_zone_t zone)
static int
hash_alloc(struct uma_hash *hash)
{
int oldsize;
u_int oldsize;
size_t alloc;
oldsize = hash->uh_hashsize;
@ -666,8 +666,8 @@ static int
hash_expand(struct uma_hash *oldhash, struct uma_hash *newhash)
{
uma_slab_t slab;
int hval;
int i;
u_int hval;
u_int idx;
if (!newhash->uh_slab_hash)
return (0);
@ -680,10 +680,10 @@ hash_expand(struct uma_hash *oldhash, struct uma_hash *newhash)
* full rehash.
*/
for (i = 0; i < oldhash->uh_hashsize; i++)
while (!SLIST_EMPTY(&oldhash->uh_slab_hash[i])) {
slab = SLIST_FIRST(&oldhash->uh_slab_hash[i]);
SLIST_REMOVE_HEAD(&oldhash->uh_slab_hash[i], us_hlink);
for (idx = 0; idx < oldhash->uh_hashsize; idx++)
while (!SLIST_EMPTY(&oldhash->uh_slab_hash[idx])) {
slab = SLIST_FIRST(&oldhash->uh_slab_hash[idx]);
SLIST_REMOVE_HEAD(&oldhash->uh_slab_hash[idx], us_hlink);
hval = UMA_HASH(newhash, slab->us_data);
SLIST_INSERT_HEAD(&newhash->uh_slab_hash[hval],
slab, us_hlink);

6
sys/vm/uma_int.h
View File

@ -179,8 +179,8 @@ SLIST_HEAD(slabhead, uma_slab);
struct uma_hash {
struct slabhead *uh_slab_hash; /* Hash table for slabs */
int uh_hashsize; /* Current size of the hash table */
int uh_hashmask; /* Mask used during hashing */
u_int uh_hashsize; /* Current size of the hash table */
u_int uh_hashmask; /* Mask used during hashing */
};
/*
@ -453,7 +453,7 @@ static __inline uma_slab_t
hash_sfind(struct uma_hash *hash, uint8_t *data)
{
uma_slab_t slab;
int hval;
u_int hval;
hval = UMA_HASH(hash, data);